Term: radioactive
https://doi.org/10.1351/goldbook.R05077

Definition:
The property of a nuclide of undergoing spontaneous nuclear transformations with the emission of radiation.

Related Terms:
1) nuclide (http://doi.org/10.1351/goldbook.N04257).
2) radiation (http://doi.org/10.1351/goldbook.R05048).

Source: PAC, 1994, 66, 2513. 'Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)' on page 2523 (https://doi.org/10.1351/pac199466122513)

Citation: 'radioactive' 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.R05077

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