Thorium: Difference between revisions
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imported>David Yamakuchi m (New page: {{subpages}}{{Basic elemental info}}<references/>) |
imported>Milton Beychok (Replaced the info box, expanded the electron configuration and edited the lede somewhat.) |
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{{Elem_Infobox | |||
|elName=Thorium | |||
|eltrnCfg=1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>6</sup>3d<sup>10</sup>4s<sup>2</sup>4p<sup>6</sup> 4d<sup>10</sup>5s<sup>2</sup>5p<sup>6</sup>4f<sup>14</sup>5d<sup>10</sup>6s<sup>2</sup>6p<sup>6</sup>6d<sup>2</sup>7s<sup>2</sup> | |||
|no1= | |||
|no2= | |||
|no3= | |||
|no4= | |||
|properties=Soft, silvery-white, ductile metal. | |||
|compounds= | |||
|uses= | |||
|hazard=Radioactive. Powdered thorium is pyrophoric. | |||
}} | |||
'''Thorium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Th. Its [[atomic number]] (the number of [[proton]]s) is 90. It has a [[Atomic mass#Standard atomic weights of the elements|standard atomic weight]] of 232.0381 g•mol<sup> −1</sup> and it is a [[solid]] in its elemental form. | |||
Thorium is considered a member of the "Actinide" class of elements. At a [[pressure]] of 101.325 k[[Pascal (unit)|Pa]], it has a [[boiling point]] of 4,788 °[[Celsius (unit)|C]] and a [[melting point]] of 1,750 °C. | |||
Latest revision as of 23:37, 2 May 2011
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Thorium is a chemical element, having the chemical symbol Th. Its atomic number (the number of protons) is 90. It has a standard atomic weight of 232.0381 g•mol −1 and it is a solid in its elemental form.
Thorium is considered a member of the "Actinide" class of elements. At a pressure of 101.325 kPa, it has a boiling point of 4,788 °C and a melting point of 1,750 °C.