elementary entity

https://doi.org/10.1351/goldbook.E02033
Any countable object or event, but usually a molecule, an ion or a specified group of atoms.
Source:
Physical Chemistry Division, unpublished [Terms]
Citation: 'elementary entity' 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.E02033 RIS BibTex EndNote
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