Positive ion

Atomic or molecular species having a net positive electric charge.

This is an electrically charged atom, radical, molecule or molecular moiety which has lost one or more electrons, thereby acquiring a positive charge. The term 'cation' is not recommended because of its use in solution chemistry. The use of the term 'Mass ion' is not recommended.

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This is an atom, radical, molecule or molecular moiety which has lost one of more electrons thereby attaining an electrically positive charge. The use of the term cation as an alternative is not recommended. The use of mass ion is not recommended.

See: negative ion

Source:

PAC, 1991, 63, 1541 (Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)) on page 1549