Talk:Chemical elements: Difference between revisions

From Citizendium
Jump to navigation Jump to search
imported>Hayford Peirce
m (Text replacement - "Periodic Table of Elements" to "Periodic table of elements")
 
(120 intermediate revisions by 11 users not shown)
Line 1: Line 1:
{{subpages}}
{{subpages}}
{{Archive box|auto=long}}
<BR><BR><BR><BR><BR>


If this is just to be an alphabetical list of elements, it looks more or less complete to me --[[User:Larry Sanger|Larry Sanger]] 09:52, 17 March 2007 (CDT)
== Re-start of [[Chemical elements]] ==


I would prefer to prefix the atomic number and to see three columns (of lengths of about 37 entries): from Actinium to Gallium, from Germanium to Potassium and from Praseodymium to Zirconium (or close to this division). Is there somebody who can do this easily? --[[User:Paul Wormer|Paul Wormer]] 08:06, 27 October 2007 (CDT)
I replaced [[Chemical elements]] with the Sebastian sandbox version, with agreement of those major parties involved in the conflicted issues.  See Talk pages sections above for more information.


I put in a new HTML table (kept and commented out the old one). --[[User:Paul Wormer|Paul Wormer]] 09:12, 29 October 2007 (CDT)
[[User:Milton Beychok|Milton Beychok]] suggests that future "major" revisions receive thorough discussion on the Talk page prior to incorporation, and that even some minor revisions merit a sentence or two on the Talk page.  Neither includes adding source citations.


*I removed the old list that I commented out earlier and added a list sorted on atomic number.--[[User:Paul Wormer|Paul Wormer]] 10:29, 9 November 2007 (CST)
Quoting Milton: " May I suggest that any future "major" revisions follow the same procedure of first being thoroughly discussed on the Talk page? Obviously, minor copy edits, style revisions, additional references, etc. need not be first discussed. But even then a sentence or two on the Talk page explaining even such minor changes can be most useful especially when made by Citizens who are not Chemistry or Physics Editors."


== Molecules ==
If no objections I will archive the current Talk page for the re-start, except for this entry.


The sentence:
Please join in the collaboration of this core chemistry article.
:''All matter around us (solids, liquids, and gases) are made up of atoms, either of one species (an element) or a combination of species (e.g., molecules, alloys).''
strongly suggests that a molecule necessarily consists of ''different'' elements. This is not true, of course, H<sub>2</sub>, N<sub>2</sub>, O<sub>2</sub> are counterexamples.  


Also I'm not certain that I agree with the definition "an element is a substance". The term "substance" implies a form of stability. However, when we speak of "elemental hydrogen" we don't mean  H<sub>2</sub>, but ''atomic hydrogen'', which is highly unstable. Personally I would not call elemental hydrogen a "substance".--[[User:Paul Wormer|Paul Wormer]] 05:00, 12 June 2009 (UTC)
[[User:Anthony.Sebastian|Anthony.Sebastian]] 18:28, 27 July 2009 (UTC)


== Chemical elements ==
== Plan to remove glossary from main article page ==
<font color=red>Following text moved from discussion page of [[User:Milton Beychok]]</font>--[[User:Paul Wormer|Paul Wormer]] 10:48, 15 June 2009 (UTC)


Hi Milton, addressing you as a chemistry editor I like to know what you think about [[Elements]]. Or, more specifically, about the definition:  "an element is a substance with unique physical and chemical properties". 
I don't believe that I have ever seen a Glossary in any other CZ article. In my opinion, it is not needed here ... and if it were needed, it would best be located in a new subpage. At present it only includes two terms and only one of them is defined. Unless there is substantial objection, I plan to remove the Glossary. [[User:Milton Beychok|Milton Beychok]] 18:29, 27 July 2009 (UTC)


When I think of a substance I think of a crystal, or a liquid or gas consisting of molecules. Take the simplest element, hydrogen. It exists as a gas of molecules, a (cold) liquid consisting of molecules, different kinds of crystals also consisting of molecules, and probably (although never found yet) a metallic lattice of H-atoms. And as you know, hydrogen chemisorbed on the surface of a transition metal catalyst (like nickel) exists in atomic form.  Now which of these substances is the element hydrogen?
:Milton, for a core chemistry article, especially thinking of non-chemists, I believe a glossary helpful. Could we move it to a subpage and see how it develops, whether all consider it then a useful addition. We can always delete it later. [[User:Anthony.Sebastian|Anthony.Sebastian]] 18:33, 27 July 2009 (UTC)


Let me make the analogy with the alphabet: there are 26 letters, but a letter is not a word or a sentence. There are ca. 100 elements, but an element is not a molecule or a solid. Some words consist of one letter, some molecules consist of one atom (noble gases). In my view the definition "a letter is a word with a unique meaning" corresponds to "an element is a substance with a unique property". I find both definitions wrong. What is your opinion? --[[User:Paul Wormer|Paul Wormer]] 05:41, 13 June 2009 (UTC)
:Milton, examples of articles with subpage entitled 'Glossary':
::[[Bankruptcy]]
::http://en.citizendium.org/wiki/Bankruptcy/Glossary


:Paul, before I can respond meaningfully, what definition would you propose as an alternative? Than I will try to respond tomorrow, because I'm on way to bed right now. [[User:Milton Beychok|Milton Beychok]] 05:55, 13 June 2009 (UTC)
::[[Economics]]
::http://en.citizendium.org/wiki/Economics/Glossary


::Hope you had a good night sleep when you read this. I wrote an earlier version of the article and in the meantime  I didn't change my mind.  If you go back in the history of [[Elements]] you see what I had to say about it. In short:  atomic species of which there are 94 naturally occurring  and about 20 man made (the latter are short-lived, don't form molecules, and are observed only as signals on a measuring device, would you call them substances?). Maybe the analogy with letters in the alphabet would be helpful? (I thought of it just today).--[[User:Paul Wormer|Paul Wormer]] 07:10, 13 June 2009 (UTC)
:Some articles put 'Glossary' as a section under subpage 'Related articles' (not cool, IMHO)
::PS I gave it some more thought: Crucial, of course,  is the meaning of "substance". Would one call diamond and graphite the same "substance"? If not, how does one define the element carbon? Would one call an artificial nucleus that lives 1 microsecond (as those with Z > 100) a "substance"?--[[User:Paul Wormer|Paul Wormer]] 13:34, 13 June 2009 (UTC)


(unindent) Paul, my first suggestion is that the article be re-named "Chemical elements" and that would avoid the need for a disambiguation page which would eventually arise.  
::[[Financial economics]]
::http://en.citizendium.org/wiki/Great_Depression_in_the_United_States/Related_Articles


Since you and Anthony Sebastian are the two most recent contributors to the [[Elements]] article, and I liked many aspects of both versions of the introduction, I decided to try and write an introduction that sort of merges what the two of you wrote. I also tried to use simpler wording and to avoid being too pedantic (I hope). My suggested wording is in green font:
:[[User:Anthony.Sebastian|Anthony.Sebastian]] 19:15, 27 July 2009 (UTC)


:<font color=green>In [[chemistry]], '''elements''' are types (or species) of [[atom]]. All solids, liquids and gases are  composed of atoms, either of one species or a combination of species.
:::If we believe that the words "Matter" and "Substance" need a definition then they should be linked in the main article text. For example, are you aware that there is a very good existing article that defines "Matter" and linking to it would provide readers (chemists or non-chemists) with a complete explanation. One of the purposes of linking words is to provide an incentive to write new articles for those words which appear as red links. It seems to me that if we start creating Glossaries in main article pages, it would be counter-productive to that purpose.  


:There are 94 different elements (or atomic species) that occur naturally on Earth and each element has its own unique physical and chemical properties. Some elements are very abundant. For example, [[water]] is composed of the elements [[hydrogen]] and [[oxygen]] and water is very abundant on Earth. As another example, the element [[carbon]] is an important part of all animal and plant life on Earth as well all of the [[fossil fuel]]([[natural gas]], [[petroleum]] and [[coal]]) which are the remains of plant material that once lived.
:::As for creating a sub-page, if there were a very large number of special "jargon" words needing definition, then a Glossary subpage might be warranted ... but not for just for 2 words or even a dozen words. Both of the two articles you referred to above, ([[Bankruptcy]] and [[Economics]]),  have what appears to be over a hundred words in their Glossaries and most of them could just as well have been in the Related Articles subpages. [[User:Milton Beychok|Milton Beychok]] 19:37, 27 July 2009 (UTC)


:Some of the 94 elements are very rare on Earth such as the gas [[neon]]. Some elements are stable and live for very long times while some, known as the ''[[radioactive]] elements'', have finite life times and decay into other elements while emitting [[radiation]]. For example, [[plutonium]] is a well-known radioactive element.
:::Anthony, now that I have taken the time to look more closely at [[Bankruptcy]], its Related Articles  subpage was produced by some robot and contains articles having '''absolutely nothing to do with the article''' ... but the Glossary has dozens upon dozens of very pertinent subjects ... many of which are red links and many of which are blue links. It is obvious to me that the Glossary subpage of that article really should be moved to the Related Articles subpage. The same also appears to be true, to a lesser extent, of the [[Economics]] article. [[User:Milton Beychok|Milton Beychok]] 21:07, 27 July 2009 (UTC)


:In addition to the 94 elements that occur naturally on [[Earth]], about 23 other known elements that do not occur naturally on Earth have been man-made and are characterized by having very short life times and being radioactive.</font>
::::Milton, as to number of words in glossary, I did not intend it to remain at two, but to grow in number as needed as the article developed. I distinguish between that "needed" and that "not needed, but helpful to the reader". By helpful, I include many things that make it easier for the reader. Not all readers will be chemists or scientists. Regarding CZ's matter article, it does not do what it would need to do for a chemistry article, especially one on chemical elements. Chemists use 'matter' in the sense of anything having mass and occupying space, which differs from the physicists perspective, as in [[Matter]]. Note the precise wording I employed to enable a non-scientist reader to understand matter from a chemist's perspective. That will become clear when I flesh out the definition of 'substance', critical in IUPAC's second conceptual sense of 'chemical element'.  Chemists define 'substance' in terms of 'matter' in the chemist's sense of 'matter' As a teacher, I strongly argue for a glossary for [[Chemical elements]], wherever located &mdash as a teacher.


[I believe there are 118 known elements but I thought one of them has not yet been synthesized. Thus, 117 - 94 = 23 man-made]
:::::Anthony, if CZ were to accept your point of view on this, it would mean that all technical articles (be they chemistry, economics, biology, physics, engineering, mathematics, earth science, astronomy) would need a Glossary sub-page for the non-technical readers. Before adopting such an all-encompassing position, I believe that a proposal would need to be made to the Editorial Council and voted upon.


I suggest that the next paragraph should begin with these words:
:::::Meanwhile, I have created a Related Articles subpage for this article and populated it with links to existing articles, including [[Allotrope]], [[Atom (science)]], [[Atomic number]], [[Chemical compound]], [[Elementary charge]], [[Matter]], [[Periodic table of elements]], [[Proton]] and [[Substance]]. In other words, I am deleting the Glossary section from the main article and moving its two words to the Related Article subpage. As you can see in the Related Articles subpage, all of those 9 articles (except for [[Substance]] already exist and their definitions are listed ... so it is really a Glossary in effect and there is no need for a separate Glossary subpage. [[User:Milton Beychok|Milton Beychok]] 23:36, 27 July 2009 (UTC)


:<font color=green>Each of the elements is distinguished by its unique integral number Z, known as the [[atomic number]]. The number Z is</font> .... (without using the expression "we recall")
::::::Milton, in my judgment, CZ´s erudite article on ´matter´ has little pedagogic value for a non-scientist, or science student, trying to understand how chemists understand and use the concept of matter and substance.  It starts with:  "Matter is defined as the substance of which physical objects are composed." It does not define ´substance´, and CZ has no article [[Substance]]. So the definition lacks information.  Besides, matter is a more fundamental concept than substance, so the latter should be defined in terms of the former, not the other way around. Substances, like iron ingots and pools of water, are composed of matter, the kinds of matter we call iron and water.


I also suggest that atomic isotopes and allotropes also be discussed somewhere in the article.
::::::CZ's article [[Matter]] does not state that matter is anything that takes up space and has mass, and that substances have the particularity of being different kinds of matter – the chemist´s perspective.  What´s a poor struggling encyclopedia-inquirer to do? How will she understand the IUPAC´s definition of ´chemical element´ as a substance, a kind of matter, composed solely of a single species of atoms, if we do not define ´matter´ and ´substance´ the way the physical and applied chemists do.  Let´s make it easier for her with a glossary of terms.  She won´t find joy in [[Matter]] and the nonexistent [[Substance]]. [[User:Anthony.Sebastian|Anthony.Sebastian]] 00:41, 28 July 2009 (UTC)


Also, regarding the quote from Aristotle at the top of the article (what Anthony called an epigraph), it is a bit too "artsy" for my taste and I would prefer to remove it ... but that is just my personal opinion.
:::::::Anthony, if you feel that a [[Substance (chemistry)]] article is needed, then the proper thing to do is to write such an article ... and not to to try piggybacking it on this article. And if you feel that the existing [[Matter]] article does not reflect the chemist's definition of "matter", then you should write a [[Matter (chemistry)]] article  instead of trying to piggyback it on this article. Alternatively, you could approach Paul Wormer and David Volk to collaborate with you in editing the existing [[Matter]] article so that it satisfactorily defines "matter" from both the physics viewpoint and the chemistry viewpoint.


I would like to say that all of my comments above are simply my comments as a fellow author. They are '''not''' to be taken as decisions made as part of my role as a Chemistry Editor.
:::::::I remain strongly opposed to piggybacking such articles on this one whether it be by a Glossary sub-page or by attaching lengthy quotes or annotations to selected references. [[User:Milton Beychok|Milton Beychok]] 01:31, 28 July 2009 (UTC)


Finally, Paul, I suggest that you move all of the exchange of comments by you and I (here on my talk page) to the discussion page of the article. [[User:Milton Beychok|Milton Beychok]] 02:55, 14 June 2009 (UTC)
::::::::Milton, I will take your advice and write [[Matter (chemistry)]] and same for substance. [[User:Anthony.Sebastian|Anthony.Sebastian]] 14:59, 28 July 2009 (UTC)


<font color=red>End moved text</font>
== Re archiving this Talk page ==


:I copied Milton's (green) text, rephrasing it a little, inspired by Anthony's text. Moved Aristotle's quotation down,  added sentence about transmutation, allotropy, and about isotopes. Some remarks:
Any objections to archiving the segment of this Talk above this and the two preceding sections? [[User:Anthony.Sebastian|Anthony.Sebastian]] 19:20, 27 July 2009 (UTC)
:* Stable nuclei live as long as the universe. Unstable nuclei may live a very long time, for instance the half-life of 238-uranium is  4.46 × 10<sup>9</sup> years.
:* The people making new elements are (nuclear) physicists not chemists.
:* I removed Calvert's (former) function. It is quite uncommon to give somebody's function when you refer to him/her.
:* Shouldn't the two tables be moved to a subpage?


:--[[User:Paul Wormer|Paul Wormer]] 11:59, 15 June 2009 (UTC)
:No objection at all. [[User:Milton Beychok|Milton Beychok]] 19:37, 27 July 2009 (UTC)


::Well done, Paul! I think it looks very good now. [[User:Milton Beychok|Milton Beychok]] 17:08, 15 June 2009 (UTC)
::Great. Now I have to learn how to do it. Haven't found the pertinent help page yet. [[User:Anthony.Sebastian|Anthony.Sebastian]] 21:28, 27 July 2009 (UTC)


== Great improvement ==
:::Anthony, if you will ask Matt Innis, Joe Quick or Drew Smith to do the archiving, I am sure they will do it for you. [[User:Milton Beychok|Milton Beychok]] 01:35, 28 July 2009 (UTC)


Paul, excellent work.  Thanks to Milton, too.  &mdash;[[User:Anthony.Sebastian|Anthony.Sebastian]] 03:06, 16 June 2009 (UTC)
== Deletion of the excessive and unnecessary annotation for Reference 8 ==


== Still not happy ==
I removed this article from my watchlist sometime ago and hence did not see the reference 8 (N.E. Holden's presentation to the 41st IUPAC General Assembly) added by Anthony Sebastion on September 24th. The reference includes:


The first sentence (abbreviated) is:
#The author's name and date of the presentation, the title of the presentation, and a hyperlink to a PDF of the complete presentation available on the Internet. It then includes a brief sentence explaining that the presentation was made to the 41st IUPAC General Assembly. (At this point, the reference is formatted properly and contains all of the information usually provided in such references.)
:''Chemical elements are types of matter each composed of a single unique type (or species) of atom.''
#The reference then includes a second hyperlink to the identical PDF document for which a link has already been provided. That redundancy is not required.
#The reference then includes a lengthy quotation from Holden's presentation which is not needed. The readers can easily go to the PDF and read the complete presentation.
#Finally, the reference includes a Table of Contents of the various sections of the PDF document.


I'm still not happy with this definition. Solids, liquids, and gases are "types of matter". Hence the definition says: an element is a solid, liquid, or gas  composed of a unique type of atom. It says, for instance,  that a pure lithium crystal is an element, a pure hydrogen (H<sub>2</sub>) gas is an element, solid hydrogen is an element, molten lithium is an element, etc. It excludes, for example:  ''a water molecule consists of the elements hydrogen and oxygen'' (which for any chemist is a commonplace statement).
The net result is a reference that contains 12 lines of text including 4 levels of bulleted items. I cannot recall ever seeing such a lengthy reference in a reference here in CZ, in Wikipedia or any journal or book that I have read. Just imagine what a reference list would look like if this were done for all references!


The point is that an element does not necessarily exist in pure form. It may happen that an element only occurs in compounds, i.e., chemically bound to other elements. Take iron;  in nature it appears only in oxidized form, as iron ore. Mankind made a great leap when it invented how to reduce the ore to pure iron. Wasn't iron  a chemical element before Iron Age?  --[[User:Paul Wormer|Paul Wormer]] 08:05, 27 June 2009 (UTC)
Therefore, I have decided to exercise my authority as a Chemistry Editor and I am deleting items 2, 3 and 4 above.


:Paul, in response to your comments, to avoid ambiguity, I rewrote the first sentence of the Intro as follows:
Normally, I would have simply made the deletions with perhaps a very brief explanation in my edit summary. However, a lengthy annotation of this sort in this article occurred earlier and was deleted after discussion between Anthony and myself in the archived section of this Talk page, I felt a detailed explanation was needed in this case.


::'''Chemical elements''' — "''the substances from which everything tangible is made''"[1] — are those particular types of matter each of which is characterized by its composition by a single unique type (or species) of atom.
Anthony, you may of course ask Paul Wormer and David Volk, who are also Chemistry Editors, to review my decision. That is your perogative. [[User:Milton Beychok|Milton Beychok]] 05:51, 28 September 2009 (UTC)


:I edited the remainder of the first paragraph to read:
==Deletion of the excessive annotation for Reference 4==


::On Earth there are 94 different naturally-occuring elements,[2] and therefore 94 different naturally-occuring atomic species, each element having its own unique set of physical and chemical properties. Typically, elements are found in nature in the form of populations of atoms, often mixed with other elements.
The excessive annotation of this reference (Atkin's book ''General Chemistry'') by Anthony Sebastian is identical with the annotation I deleted from from reference 4 on July 27th after much discussion back and forth with Anthoney Sebastion. I was under the impression that he finally acquiesced and it was settled without my exercising my authority as a Chemistry Editor. I was evidently wrong, because Anthony has reinserted the excessive annotation.


:I will change the last sentence, in response to your last point, to read:
Accordingly, this time I am exercising my authority and deleting the excessive annotation again. Atkin's book is readily available in most libraries and there is no need to include a lengthy bit of content from the book.


::Typically, elements are found in nature in the form of populations of atoms, often with the atoms of other elements or the selfsame atoms as [[Compound (chemistry)|compounds]] (e.g., oxygen gas, a population of compounds each of two oxygen atoms; iron ore, a population of compounds each of iron and oxygen atoms) or as [[Mixture (chemistry)|mixtures]].
As noted in my remarks on reference 8 above, just imagine what a reference list would look like if all references were annotated to this extent.  


:Thanks for the challenges. [[User:Anthony.Sebastian|Anthony.Sebastian]] 20:46, 27 June 2009 (UTC)
Again, you may review my decision with Paul Wormer and David Volk who are also Chemistry Editors. That is your perogative. [[User:Milton Beychok|Milton Beychok]] 05:51, 28 September 2009 (UTC)


:::Since my above note, I further tweaked the Intro. [[User:Anthony.Sebastian|Anthony.Sebastian]] 20:43, 28 June 2009 (UTC); and again [[User:Anthony.Sebastian|Anthony.Sebastian]] 21:30, 16 July 2009 (UTC)
:I saw the lengthy quote by Atkins. This quote doesn't add anything new, there are millions of books out there that say something similar. We have this old-fashioned (fuzzy and non-unique) definition of "chemical element" already in the article, why would we need a confirmation of it by an overrated bestseller writer (known among professional physical chemists for the many errors in his many textbooks)?--[[User:Paul Wormer|Paul Wormer]] 06:23, 28 September 2009 (UTC)


== Recognizing elements? ==
:: Though I am not a chemist, I fully agree. I would object to similar usage in mathematics or physics, as well. (The situation might be different in humanities, but I doubt even this.) I even suggest to remove both references. Paul says that Atkins is a popular book -- a secondary or tertiary source is not a suitable reference for a definition. Concerning reference 8, a trivial statement like "the names of the elements are of historical origin" requires no footnote. It is enough to list the book in the bibliography. By the way, the comments there are also much overdone, they read like publisher's blurb, not as annotations helping to find the best literature. [[User:Peter Schmitt|Peter Schmitt]] 09:38, 28 September 2009 (UTC)


Since the distinction is not made between elemental forms and compounds, I worry that fluorine would be the last element someone would ever recognize. [[User:Howard C. Berkowitz|Howard C. Berkowitz]] 02:30, 14 July 2009 (UTC)
:::Paul and Peter, thank you for your comments. [[User:Milton Beychok|Milton Beychok]] 15:18, 28 September 2009 (UTC)


:Good point. I'll remove.  Though when I ask my non-scientist friends whether carbon figures into their everyday life, they often mention global warming. [[User:Anthony.Sebastian|Anthony.Sebastian]] 03:58, 14 July 2009 (UTC)
== Annotating Bibliography Entries ==


::"Diamonds are a girl's best friend" [[User:Howard C. Berkowitz|Howard C. Berkowitz]] 21:52, 16 July 2009 (UTC)
Milton: The heading on the Bibliography subpage states: "Please sort and annotate in a user-friendly manner." My annotations of the bibliographic entries that I entered, which you deleted, I designed specifically for user-friendliness.  I had the reader in mind throughout the annotation process, which took hours of my time, deleted in an instant.  You would not allow such annotations in the reference section of the main article.  I had hoped you would allow them on the Bibliography subpage.  I feel you have deleted useful information for the reader, information that might very well have encouraged the reader to consult the bibliographic entries by describing and illustrating what they could provide.  The annotations on a subpage in no way damage the main article. Respectfully, I feel you have denied the reader something of value.  Where can I give the reader that information?  Apparently nowhere in the article.  As a teacher, I feel very frustrated.  As a three-year contributor to Citizendium I find for the first time that my sincere efforts to deliver quality content to the reader restricted by an Editor.  I cannot tell you how discouraged I feel. [[User:Anthony.Sebastian|Anthony.Sebastian]] 02:26, 29 September 2009 (UTC)


== The article's first sentence is hopelessly convoluted ==
:I regret that you feel discouraged, but the annotations to those bibliography entries were even more lengthy than your annotations of the references. One of them was practically a separate article unto itself. My edit summary reads: ''Deleted grossly excessive annotation for same reasons discussed on main article's Talk page re references 4 & 8. Annotation for the link to a periodic table was almost a separate article unto itself.''


Anthony, with all due respect, that first sentence is hopelessly convoluted. Here it is:
:I don't believe that the subpage heading of "Please sort and annotate in a user-friendly manner" anticipated or expected anyone to intrepret it to mean such grossly excessive annotations.


<blockquote.>''Chemical elements''' &mdash; "''the substances<ref name=submat>''''<u>Note:</u>'''&nbsp;''Substance'': a type of matter. ''Matter'': anything that has [[mass]] and occupies [[space]].</ref> from which everything tangible is made''"<ref name=atkinsperking>Atkins PW. (1995, 1997) [http://www.questia.com/read/91054371 The Periodic Kingdom: A Journey into the Land of the Chemical Elements. (Full-Text).] New York: [http://basicbooks.com/basic/book_detail.jsp?isbn=0465072666 Basic Books.] ISBN 9780465072668.
:Anthony, I note on your user page that you have published dozens of papers in peer-reviewed journals. I don't have access to any of them but I am fairly sure that most, if not all, of those journals had certain rules about the formatting of references and bibliographies ... and that they would not have allowed lengthy  annotations such as you seem to be prone to writing. Again, I regret that you feel frustrated with me, but I assure you there is nothing personal about my edits. I believe that I am just performing my duties as an Editor. If you have read the above comments by Paul Wormer and by Peter Schmitt, you will see that I am not alone in believing that such lengthy annotations are unwarranted. Both Paul and Peter are also CZ editors ... Paul is a retired university professor and Peter is an active university professor and one must assume that both of them are or were teachers like yourself. [[User:Milton Beychok|Milton Beychok]] 03:28, 29 September 2009 (UTC)
* '''<u>Publisher´s Description:</u>'''&nbsp; Come on a journey into the heart of matter—and enjoy the process!—as a brilliant scientist and entertaining tour guide takes you on a fascinating voyage through the Periodic Kingdom, the world of the elements. The periodic table, your map for this trip, is the most important concept in chemistry. It hangs in classrooms and labs throughout the world, providing support for students, suggesting new avenues of research for professionals, succinctly organizing the whole of chemistry. The one hundred or so elements listed in the table make up everything in the universe, from microscopic organisms to distant planets. Just how does the periodic table help us make sense of the world around us? Using vivid imagery, ingenious analogies, and liberal doses of humor P. W. Atkins answers this question. He shows us that the Periodic Kingdom is a systematic place. Detailing the geography, history and governing institutions of this imaginary landscape, he demonstrates how physical similarities can point to deeper affinities, and how the location of an element can be used to predict its properties. Here’s an opportunity to discover a rich kingdom of the imagination kingdom of which our own world is a manifestation.</ref> &mdash; are those particular types of matter<ref name=submat/> of which a sample<ref>'''<u>Note:</u>'''&nbsp;The sample may be macroscopic, large enough to be observed without a microscope, or smaller.</ref> of each element type is constituted of a population solely of a single type (or species) of [[atom]] &mdash; each element type unique in virtue of the number of [[Proton|protons]] in each of its sample population's constituent atoms' [[Nucleus (physics)|nuclei]], referred to as the [[atomic number]], symbolized ''Z'', of the element type.</blockquote>


In my opinion, it needs to be completely scrubbed and re-written in a '''much''' simpler, more grammatical and much shorter language. [[User:Milton Beychok|Milton Beychok]] 04:24, 17 July 2009 (UTC)
:: I very much appreciate your efforts to be reader-friendly. Therefore I feel that I have to explain, at least briefly, why I completely agree with Milton:
::* Holden "surveys (alphabetically) the origin of the names given to the chemical elements". Why don't you say this in your annotation instead of cryptically saying "'Origin' here refers to the 'origin of discovery' on Earth", adding a lengthy quote that says nothing about the paper, and giving subject headings which are only of interest if one reads the paper?
::* Trapp is "a (very) nicely made site providing detailed historical accounts on the chemical elements". Why do you copy the mission statement of the site and some of its internal links?
::* Jefferson Lab "provides (brief) information on the properties, the uses, and the history of the chemical elements". Why do you want to reproduce the instruction how to use the site, and why to you reproduce one entry?
:: You should bear in mind that being "reader-friendly" also includes to be brief: Giving more information than needed means that the reader has to read more and might easily miss the important part(s). [[User:Peter Schmitt|Peter Schmitt]] 10:09, 29 September 2009 (UTC)


:It probably just needs to be split into multiple sentences.  Here's my attempt, sans citations: <blockquote>'''Chemical elements''' are the building blocks of [[matter]], "the substances from which everything tangible is made." Each element type is constituted by a single type of [[atom]], distinguishable from other elements by virtue of the unique number of [[proton]]s in each atom's [[nucleus]]. Thus, each element has a unique [[atomic number]], symbolized Z.</blockquote>--[[User:Joe Quick|Joe Quick]] 12:58, 17 July 2009 (UTC)
:::I agree with Milt and Peter, but noticed in the part of the bibliography, which is now gone, some interesting facts that could go into the articles of some of the elements. Anthony, why don't you start, for instance, an article on vanadium? (I'm working on transition elements). Or add something to [[Periodic table of elements#History]]? --[[User:Paul Wormer|Paul Wormer]] 15:16, 29 September 2009 (UTC)


::It became pure gibberish to me after about the second "of which" -- geez, I don't think I've ever '''seen''' a more impenetrable sentence! [[User:Hayford Peirce|Hayford Peirce]] 15:43, 17 July 2009 (UTC)
(Unindent)&nbsp;Milton, Peter, and Paul: I tremendously respect each of you, from whom I continually learn, both of natural science and CZ-mechanics.  As you undoubtedly know, I contribute content to CZ in Biology, Health Sciences, and in numerous other workgroups.  I have taken to the wiki mode of writing for many reasons, in particular because it allows me more freedom of style than writing peer-reviewed research papers, review articles, editorials and the like (which I nevertheless continue to write).  I love the freedom to include text-boxes, blockquotes, epigraphs, color, and such.  I also like the freedom to include editorial-type notes in the reference section, which many journals do not permit, and to annotate source citations for the convenience and edification of the reader.  Those latter two mechanisms I have extensively employed in the CZ articles I have initiated and developed over the past three years, as well as the articles to which I have contributed but did not initiate, often with what you all would label excessively long notes/annotations.  Not to pat myself on the back, I tell you I work hard to select and prepare those 'long' notes/annotations. I accede to your proscription of 'long' notes/annotations in the reference section of the main article, but very much regret the proscription of them also on the Bibliography subpage. In my view they add value for the reader and do no real injury to the overall contribution led by the main article. Nevertheless, Editors have the last word.


== "predated introduction" ==
Paul: I did think that once we more fully developed [[Chemical element]] I would start an article on a specific element, and I like your suggestion of vanadium, as I also know a little about its biological role and would like to learn more through the process of writing about it. When a server-person asks me whether I want fresh ground pepper on my salad I always reply yes, that I need the vanadium. If only you could slow down the clock.  [[User:Anthony.Sebastian|Anthony.Sebastian]] 21:29, 29 September 2009 (UTC)


That's a *lot* better! But what the devil does "predated introduction" mean? To me, nothing at all.... [[User:Hayford Peirce|Hayford Peirce]] 20:03, 17 July 2009 (UTC)
: Anthony, I am sorry that feel suppressed. It is not the length of your annotations that I reject (I can imagine lengthy annotations). But you have not convinced us that, in this case, they add value for the reader. (I have tried to explain my reasons.)
 
== Names ==
 
The official IUPAC names are a compromise between British (caesium, aluminium) and American (sulfur). The article imposes American spellings for all. [[User:Peter Jackson|Peter Jackson]] 09:22, 17 April 2010 (UTC)
:Why this encyclopædia doesn't follow IUPAC nomenclature is puzzling. [[User:Meg Ireland|Meg Ireland]] 10:51, 17 April 2010 (UTC)
 
::Meg, I prepared the tables and I wasn't aware that I didn't follow IUPAC nomenclature, my mistake.  Hopefully this confession solves your puzzle. I'm in favor of following standards, so please make corrections  everywhere where I went wrong (i.e., deviated from the standard). --[[User:Paul Wormer|Paul Wormer]] 15:51, 17 April 2010 (UTC)
 
:::It's not your fault Paul. The articles in question were created by others. They are going to have to be renamed to conform to IUPAC standards. [[User:Meg Ireland|Meg Ireland]] 00:54, 18 April 2010 (UTC)
 
== How many chemical elements possible?  ==
 
Many years ago I read an essay by Asimov suggesting you could have substantially larger nuclei with a toroidal structure. [[User:Peter Jackson|Peter Jackson]] 09:44, 2 September 2011 (UTC)
 
:Interesting, Peter. I wonder whether a toroidal nucleus could develop naturally, or whether nature would sustain an artificial one.
 
:I wonder also what the implications/possibilties/advantages of stable atoms with Z>150. [[User:Anthony.Sebastian|Anthony.Sebastian]] 05:47, 3 September 2011 (UTC)

Latest revision as of 04:42, 6 March 2024

This article is developing and not approved.
Main Article
Discussion
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
 
To learn how to update the categories for this article, see here. To update categories, edit the metadata template.
 Definition In one sense, refers to species or types of atoms, each species/type distinguished by the number of protons in the nuclei of the atoms belonging to the species/type, each species/type having a unique number of nuclear protons; in another sense, refers to substances, or pieces of matter, each composed of multiple atoms solely of a single species/type. [d] [e]
Checklist and Archives
 Workgroup categories Chemistry and Physics [Please add or review categories]
 Talk Archive 1  English language variant American English






Re-start of Chemical elements

I replaced Chemical elements with the Sebastian sandbox version, with agreement of those major parties involved in the conflicted issues. See Talk pages sections above for more information.

Milton Beychok suggests that future "major" revisions receive thorough discussion on the Talk page prior to incorporation, and that even some minor revisions merit a sentence or two on the Talk page. Neither includes adding source citations.

Quoting Milton: " May I suggest that any future "major" revisions follow the same procedure of first being thoroughly discussed on the Talk page? Obviously, minor copy edits, style revisions, additional references, etc. need not be first discussed. But even then a sentence or two on the Talk page explaining even such minor changes can be most useful especially when made by Citizens who are not Chemistry or Physics Editors."

If no objections I will archive the current Talk page for the re-start, except for this entry.

Please join in the collaboration of this core chemistry article.

Anthony.Sebastian 18:28, 27 July 2009 (UTC)

Plan to remove glossary from main article page

I don't believe that I have ever seen a Glossary in any other CZ article. In my opinion, it is not needed here ... and if it were needed, it would best be located in a new subpage. At present it only includes two terms and only one of them is defined. Unless there is substantial objection, I plan to remove the Glossary. Milton Beychok 18:29, 27 July 2009 (UTC)

Milton, for a core chemistry article, especially thinking of non-chemists, I believe a glossary helpful. Could we move it to a subpage and see how it develops, whether all consider it then a useful addition. We can always delete it later. Anthony.Sebastian 18:33, 27 July 2009 (UTC)
Milton, examples of articles with subpage entitled 'Glossary':
Bankruptcy
http://en.citizendium.org/wiki/Bankruptcy/Glossary
Economics
http://en.citizendium.org/wiki/Economics/Glossary
Some articles put 'Glossary' as a section under subpage 'Related articles' (not cool, IMHO)
Financial economics
http://en.citizendium.org/wiki/Great_Depression_in_the_United_States/Related_Articles
Anthony.Sebastian 19:15, 27 July 2009 (UTC)
If we believe that the words "Matter" and "Substance" need a definition then they should be linked in the main article text. For example, are you aware that there is a very good existing article that defines "Matter" and linking to it would provide readers (chemists or non-chemists) with a complete explanation. One of the purposes of linking words is to provide an incentive to write new articles for those words which appear as red links. It seems to me that if we start creating Glossaries in main article pages, it would be counter-productive to that purpose.
As for creating a sub-page, if there were a very large number of special "jargon" words needing definition, then a Glossary subpage might be warranted ... but not for just for 2 words or even a dozen words. Both of the two articles you referred to above, (Bankruptcy and Economics), have what appears to be over a hundred words in their Glossaries and most of them could just as well have been in the Related Articles subpages. Milton Beychok 19:37, 27 July 2009 (UTC)
Anthony, now that I have taken the time to look more closely at Bankruptcy, its Related Articles subpage was produced by some robot and contains articles having absolutely nothing to do with the article ... but the Glossary has dozens upon dozens of very pertinent subjects ... many of which are red links and many of which are blue links. It is obvious to me that the Glossary subpage of that article really should be moved to the Related Articles subpage. The same also appears to be true, to a lesser extent, of the Economics article. Milton Beychok 21:07, 27 July 2009 (UTC)
Milton, as to number of words in glossary, I did not intend it to remain at two, but to grow in number as needed as the article developed. I distinguish between that "needed" and that "not needed, but helpful to the reader". By helpful, I include many things that make it easier for the reader. Not all readers will be chemists or scientists. Regarding CZ's matter article, it does not do what it would need to do for a chemistry article, especially one on chemical elements. Chemists use 'matter' in the sense of anything having mass and occupying space, which differs from the physicists perspective, as in Matter. Note the precise wording I employed to enable a non-scientist reader to understand matter from a chemist's perspective. That will become clear when I flesh out the definition of 'substance', critical in IUPAC's second conceptual sense of 'chemical element'. Chemists define 'substance' in terms of 'matter' in the chemist's sense of 'matter' As a teacher, I strongly argue for a glossary for Chemical elements, wherever located &mdash as a teacher.
Anthony, if CZ were to accept your point of view on this, it would mean that all technical articles (be they chemistry, economics, biology, physics, engineering, mathematics, earth science, astronomy) would need a Glossary sub-page for the non-technical readers. Before adopting such an all-encompassing position, I believe that a proposal would need to be made to the Editorial Council and voted upon.
Meanwhile, I have created a Related Articles subpage for this article and populated it with links to existing articles, including Allotrope, Atom (science), Atomic number, Chemical compound, Elementary charge, Matter, Periodic table of elements, Proton and Substance. In other words, I am deleting the Glossary section from the main article and moving its two words to the Related Article subpage. As you can see in the Related Articles subpage, all of those 9 articles (except for Substance already exist and their definitions are listed ... so it is really a Glossary in effect and there is no need for a separate Glossary subpage. Milton Beychok 23:36, 27 July 2009 (UTC)
Milton, in my judgment, CZ´s erudite article on ´matter´ has little pedagogic value for a non-scientist, or science student, trying to understand how chemists understand and use the concept of matter and substance. It starts with: "Matter is defined as the substance of which physical objects are composed." It does not define ´substance´, and CZ has no article Substance. So the definition lacks information. Besides, matter is a more fundamental concept than substance, so the latter should be defined in terms of the former, not the other way around. Substances, like iron ingots and pools of water, are composed of matter, the kinds of matter we call iron and water.
CZ's article Matter does not state that matter is anything that takes up space and has mass, and that substances have the particularity of being different kinds of matter – the chemist´s perspective. What´s a poor struggling encyclopedia-inquirer to do? How will she understand the IUPAC´s definition of ´chemical element´ as a substance, a kind of matter, composed solely of a single species of atoms, if we do not define ´matter´ and ´substance´ the way the physical and applied chemists do. Let´s make it easier for her with a glossary of terms. She won´t find joy in Matter and the nonexistent Substance. Anthony.Sebastian 00:41, 28 July 2009 (UTC)
Anthony, if you feel that a Substance (chemistry) article is needed, then the proper thing to do is to write such an article ... and not to to try piggybacking it on this article. And if you feel that the existing Matter article does not reflect the chemist's definition of "matter", then you should write a Matter (chemistry) article instead of trying to piggyback it on this article. Alternatively, you could approach Paul Wormer and David Volk to collaborate with you in editing the existing Matter article so that it satisfactorily defines "matter" from both the physics viewpoint and the chemistry viewpoint.
I remain strongly opposed to piggybacking such articles on this one whether it be by a Glossary sub-page or by attaching lengthy quotes or annotations to selected references. Milton Beychok 01:31, 28 July 2009 (UTC)
Milton, I will take your advice and write Matter (chemistry) and same for substance. Anthony.Sebastian 14:59, 28 July 2009 (UTC)

Re archiving this Talk page

Any objections to archiving the segment of this Talk above this and the two preceding sections? Anthony.Sebastian 19:20, 27 July 2009 (UTC)

No objection at all. Milton Beychok 19:37, 27 July 2009 (UTC)
Great. Now I have to learn how to do it. Haven't found the pertinent help page yet. Anthony.Sebastian 21:28, 27 July 2009 (UTC)
Anthony, if you will ask Matt Innis, Joe Quick or Drew Smith to do the archiving, I am sure they will do it for you. Milton Beychok 01:35, 28 July 2009 (UTC)

Deletion of the excessive and unnecessary annotation for Reference 8

I removed this article from my watchlist sometime ago and hence did not see the reference 8 (N.E. Holden's presentation to the 41st IUPAC General Assembly) added by Anthony Sebastion on September 24th. The reference includes:

  1. The author's name and date of the presentation, the title of the presentation, and a hyperlink to a PDF of the complete presentation available on the Internet. It then includes a brief sentence explaining that the presentation was made to the 41st IUPAC General Assembly. (At this point, the reference is formatted properly and contains all of the information usually provided in such references.)
  2. The reference then includes a second hyperlink to the identical PDF document for which a link has already been provided. That redundancy is not required.
  3. The reference then includes a lengthy quotation from Holden's presentation which is not needed. The readers can easily go to the PDF and read the complete presentation.
  4. Finally, the reference includes a Table of Contents of the various sections of the PDF document.

The net result is a reference that contains 12 lines of text including 4 levels of bulleted items. I cannot recall ever seeing such a lengthy reference in a reference here in CZ, in Wikipedia or any journal or book that I have read. Just imagine what a reference list would look like if this were done for all references!

Therefore, I have decided to exercise my authority as a Chemistry Editor and I am deleting items 2, 3 and 4 above.

Normally, I would have simply made the deletions with perhaps a very brief explanation in my edit summary. However, a lengthy annotation of this sort in this article occurred earlier and was deleted after discussion between Anthony and myself in the archived section of this Talk page, I felt a detailed explanation was needed in this case.

Anthony, you may of course ask Paul Wormer and David Volk, who are also Chemistry Editors, to review my decision. That is your perogative. Milton Beychok 05:51, 28 September 2009 (UTC)

Deletion of the excessive annotation for Reference 4

The excessive annotation of this reference (Atkin's book General Chemistry) by Anthony Sebastian is identical with the annotation I deleted from from reference 4 on July 27th after much discussion back and forth with Anthoney Sebastion. I was under the impression that he finally acquiesced and it was settled without my exercising my authority as a Chemistry Editor. I was evidently wrong, because Anthony has reinserted the excessive annotation.

Accordingly, this time I am exercising my authority and deleting the excessive annotation again. Atkin's book is readily available in most libraries and there is no need to include a lengthy bit of content from the book.

As noted in my remarks on reference 8 above, just imagine what a reference list would look like if all references were annotated to this extent.

Again, you may review my decision with Paul Wormer and David Volk who are also Chemistry Editors. That is your perogative. Milton Beychok 05:51, 28 September 2009 (UTC)

I saw the lengthy quote by Atkins. This quote doesn't add anything new, there are millions of books out there that say something similar. We have this old-fashioned (fuzzy and non-unique) definition of "chemical element" already in the article, why would we need a confirmation of it by an overrated bestseller writer (known among professional physical chemists for the many errors in his many textbooks)?--Paul Wormer 06:23, 28 September 2009 (UTC)
Though I am not a chemist, I fully agree. I would object to similar usage in mathematics or physics, as well. (The situation might be different in humanities, but I doubt even this.) I even suggest to remove both references. Paul says that Atkins is a popular book -- a secondary or tertiary source is not a suitable reference for a definition. Concerning reference 8, a trivial statement like "the names of the elements are of historical origin" requires no footnote. It is enough to list the book in the bibliography. By the way, the comments there are also much overdone, they read like publisher's blurb, not as annotations helping to find the best literature. Peter Schmitt 09:38, 28 September 2009 (UTC)
Paul and Peter, thank you for your comments. Milton Beychok 15:18, 28 September 2009 (UTC)

Annotating Bibliography Entries

Milton: The heading on the Bibliography subpage states: "Please sort and annotate in a user-friendly manner." My annotations of the bibliographic entries that I entered, which you deleted, I designed specifically for user-friendliness. I had the reader in mind throughout the annotation process, which took hours of my time, deleted in an instant. You would not allow such annotations in the reference section of the main article. I had hoped you would allow them on the Bibliography subpage. I feel you have deleted useful information for the reader, information that might very well have encouraged the reader to consult the bibliographic entries by describing and illustrating what they could provide. The annotations on a subpage in no way damage the main article. Respectfully, I feel you have denied the reader something of value. Where can I give the reader that information? Apparently nowhere in the article. As a teacher, I feel very frustrated. As a three-year contributor to Citizendium I find for the first time that my sincere efforts to deliver quality content to the reader restricted by an Editor. I cannot tell you how discouraged I feel. Anthony.Sebastian 02:26, 29 September 2009 (UTC)

I regret that you feel discouraged, but the annotations to those bibliography entries were even more lengthy than your annotations of the references. One of them was practically a separate article unto itself. My edit summary reads: Deleted grossly excessive annotation for same reasons discussed on main article's Talk page re references 4 & 8. Annotation for the link to a periodic table was almost a separate article unto itself.
I don't believe that the subpage heading of "Please sort and annotate in a user-friendly manner" anticipated or expected anyone to intrepret it to mean such grossly excessive annotations.
Anthony, I note on your user page that you have published dozens of papers in peer-reviewed journals. I don't have access to any of them but I am fairly sure that most, if not all, of those journals had certain rules about the formatting of references and bibliographies ... and that they would not have allowed lengthy annotations such as you seem to be prone to writing. Again, I regret that you feel frustrated with me, but I assure you there is nothing personal about my edits. I believe that I am just performing my duties as an Editor. If you have read the above comments by Paul Wormer and by Peter Schmitt, you will see that I am not alone in believing that such lengthy annotations are unwarranted. Both Paul and Peter are also CZ editors ... Paul is a retired university professor and Peter is an active university professor and one must assume that both of them are or were teachers like yourself. Milton Beychok 03:28, 29 September 2009 (UTC)
I very much appreciate your efforts to be reader-friendly. Therefore I feel that I have to explain, at least briefly, why I completely agree with Milton:
  • Holden "surveys (alphabetically) the origin of the names given to the chemical elements". Why don't you say this in your annotation instead of cryptically saying "'Origin' here refers to the 'origin of discovery' on Earth", adding a lengthy quote that says nothing about the paper, and giving subject headings which are only of interest if one reads the paper?
  • Trapp is "a (very) nicely made site providing detailed historical accounts on the chemical elements". Why do you copy the mission statement of the site and some of its internal links?
  • Jefferson Lab "provides (brief) information on the properties, the uses, and the history of the chemical elements". Why do you want to reproduce the instruction how to use the site, and why to you reproduce one entry?
You should bear in mind that being "reader-friendly" also includes to be brief: Giving more information than needed means that the reader has to read more and might easily miss the important part(s). Peter Schmitt 10:09, 29 September 2009 (UTC)
I agree with Milt and Peter, but noticed in the part of the bibliography, which is now gone, some interesting facts that could go into the articles of some of the elements. Anthony, why don't you start, for instance, an article on vanadium? (I'm working on transition elements). Or add something to Periodic table of elements#History? --Paul Wormer 15:16, 29 September 2009 (UTC)

(Unindent) Milton, Peter, and Paul: I tremendously respect each of you, from whom I continually learn, both of natural science and CZ-mechanics. As you undoubtedly know, I contribute content to CZ in Biology, Health Sciences, and in numerous other workgroups. I have taken to the wiki mode of writing for many reasons, in particular because it allows me more freedom of style than writing peer-reviewed research papers, review articles, editorials and the like (which I nevertheless continue to write). I love the freedom to include text-boxes, blockquotes, epigraphs, color, and such. I also like the freedom to include editorial-type notes in the reference section, which many journals do not permit, and to annotate source citations for the convenience and edification of the reader. Those latter two mechanisms I have extensively employed in the CZ articles I have initiated and developed over the past three years, as well as the articles to which I have contributed but did not initiate, often with what you all would label excessively long notes/annotations. Not to pat myself on the back, I tell you I work hard to select and prepare those 'long' notes/annotations. I accede to your proscription of 'long' notes/annotations in the reference section of the main article, but very much regret the proscription of them also on the Bibliography subpage. In my view they add value for the reader and do no real injury to the overall contribution led by the main article. Nevertheless, Editors have the last word.

Paul: I did think that once we more fully developed Chemical element I would start an article on a specific element, and I like your suggestion of vanadium, as I also know a little about its biological role and would like to learn more through the process of writing about it. When a server-person asks me whether I want fresh ground pepper on my salad I always reply yes, that I need the vanadium. If only you could slow down the clock. Anthony.Sebastian 21:29, 29 September 2009 (UTC)

Anthony, I am sorry that feel suppressed. It is not the length of your annotations that I reject (I can imagine lengthy annotations). But you have not convinced us that, in this case, they add value for the reader. (I have tried to explain my reasons.)

Names

The official IUPAC names are a compromise between British (caesium, aluminium) and American (sulfur). The article imposes American spellings for all. Peter Jackson 09:22, 17 April 2010 (UTC)

Why this encyclopædia doesn't follow IUPAC nomenclature is puzzling. Meg Ireland 10:51, 17 April 2010 (UTC)
Meg, I prepared the tables and I wasn't aware that I didn't follow IUPAC nomenclature, my mistake. Hopefully this confession solves your puzzle. I'm in favor of following standards, so please make corrections everywhere where I went wrong (i.e., deviated from the standard). --Paul Wormer 15:51, 17 April 2010 (UTC)
It's not your fault Paul. The articles in question were created by others. They are going to have to be renamed to conform to IUPAC standards. Meg Ireland 00:54, 18 April 2010 (UTC)

How many chemical elements possible?

Many years ago I read an essay by Asimov suggesting you could have substantially larger nuclei with a toroidal structure. Peter Jackson 09:44, 2 September 2011 (UTC)

Interesting, Peter. I wonder whether a toroidal nucleus could develop naturally, or whether nature would sustain an artificial one.
I wonder also what the implications/possibilties/advantages of stable atoms with Z>150. Anthony.Sebastian 05:47, 3 September 2011 (UTC)