bn:00006820n
Noun Concept
Categories: Chemical properties, Amount of substance, Periodic table, Stoichiometry, Atoms
EN
atomic mass  relative atomic mass  atomic weight
Definitions
Relations
Sources
EN
The atomic mass is the mass of an atom. Wikipedia
Relative atomic mass or atomic weight is a dimensionless physical quantity defined as the ratio of the average mass of atoms of a chemical element in a given sample to the atomic mass constant. Wikipedia
Dimensionless physical quantity: ratio of the average mass of atoms of an element to one unified atomic mass unit.The unified atomic mass unit, symbol u, is defined being  1⁄12 of the mass of a carbon-12 atom Wikidata
Rest mass of an atom in its ground state Wikidata
The mass of an atom at rest, most often expressed in unified atomic mass units "u". OmegaWiki
Atomic weight; the average mass of atoms of an element. Wiktionary
A term used to represent the mean relative atomic mass of an element in nature, as distinct from the relative atomic mass of a single isotope. Wiktionary
Term used to represent the mean atomic mass of an element in nature. Wiktionary (translation)
Ratio of the atomic mass of one atom of an isotope to 1/12 (one twelfth) the mass of a Carbon-12 atom. Wiktionary