relative molecular mass, Mr

https://doi.org/10.1351/goldbook.R05271
Ratio of the mass of a molecule to the unified atomic mass unit. Sometimes called the molecular weight or relative molar mass.
Sources:
Green Book, 2nd ed., p. 41 [Terms] [Book]
PAC, 1996, 68, 957. (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 990 [Terms] [Paper]
Citation: 'relative molecular mass' 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.R05271 RIS BibTex EndNote
Div. IDiv. VIIPDFTextXMLJSONQuantity