Atomic Mass (Noun)
Meaning
(chemistry) the mass of an atom of a chemical element expressed in atomic mass units.
Classification
Nouns denoting attributes of people and objects.
Examples
- The atomic mass of an element is a weighted average of the masses of the naturally occurring isotopes of that element.
- Carbon-12, with an atomic mass of exactly 12 u, is used as the standard for the atomic mass scale.
- The atomic mass of a molecule is the sum of the atomic masses of its constituent atoms.
- By determining the atomic mass of an element, scientists can identify its position in the periodic table.
- The atomic mass of an element can be determined by measuring the mass-to-charge ratio of its ions using a mass spectrometer.