@N04257@ having the same @M03726@ and @A00499@, occupying different nuclear energy states.
Source: PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1545 [Terms] [Paper]
Citation: 'nuclear isomers' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.N04234 RISBibTexEndNote