Promethium/Elemental Class

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Revision as of 04:49, 6 March 2024 by John Leach (talk | contribs) (John Leach moved page Promethium/Elemental Class to Promethium/Periodic table of elements: Text replacement - "Elemental Class" to "Periodic table of elements")
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Promethium is considered to be a synthetic element, officially classified as a Lanthanide.