Radical ion

Orange Book Entry

This is an ion containing an unpaired electron, which is thus both an ion and a radical. In mass spectroscopy an unpaired electron is denoted by a superscript dot alongside the superscript symbol for charge, thus C₂H₆^{+?????????????????????} or SF₆ ^{-?????????????????????}. An alternative form (IUPAC Compendium of Chemical Terminology, 1987) used in inorganic and organic chemistry literature uses the symbolism as in X^{?????????????????????+}. For species with more than one charge and/or more than one unpaired electron the styles X^{(2+) (2?????????????????????)} or X^{(2?????????????????????) (2+)} are recommended.

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