Term: nuclide
https://doi.org/10.1351/goldbook.N04257

Definition:
A species of atom, characterized by its mass number, atomic number and nuclear energy state, provided that the mean life in that state is long enough to be observable.

Related Terms:
1) mass number (http://doi.org/10.1351/goldbook.M03726).
2) atomic number (http://doi.org/10.1351/goldbook.A00499).
3) mean life (http://doi.org/10.1351/goldbook.M03780).

Source: Orange Book, 2nd ed., p. 233 (https://media.iupac.org/publications/analytical_compendium/)

Citation: 'nuclide' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.N04257

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