charge number

in inorganic nomenclature
https://doi.org/10.1351/goldbook.C00994
The magnitude of the charge on an ion, given in arabic numerals followed by the sign of the charge, in parentheses without a space, immediately after the name of an ion, e.g. iron(2+), hexacyanoferrate(4−).
Note:
The term @E02231@ is no longer recommended.
Source:
Red Book, 3rd ed., p. 66 [Terms] [Book]
Citation: 'charge number' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.C00994 RIS BibTex EndNote
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Last revised: October 7, 2008