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Periodic table
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Alternativeandextendedforms
Periodic table history
D. Mendeleev
1871 table
1869 predictions
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Naming and etymology
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There are currently 118 known chemical elements with a wide range of physical and chemical properties. Amongst this diversity, scientists have found it useful to apply names for various sets of elements that have similar properties, to varying degrees. Many of these sets are formally recognized by the standards body IUPAC.[1]
^International Union of Pure and Applied Chemistry (2005). Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005). Cambridge (UK): RSC–IUPAC. ISBN 0-85404-438-8. Electronic version. Retrieved 10 June 2012.
and 25 Related for: Names for sets of chemical elements information
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