in English is largely synonymous with oxidation state
and may be preferred when the value represents a mere parameter or number rather than being related
to chemical systematics or a state of the atom in a compound. Etymologically, it stems from the
no-longer-used term Stock number
(oxidation number of a
charge it would bear if all the ligands were removed along with the electron pairs that were shared with the
the likewise obsolete term Ewens–Bassett number
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.