ATOMIC WEIGHT (ATOMIC MASS)


Meaning of ATOMIC WEIGHT (ATOMIC MASS) in English

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The average mass of an atom of an element, usually expressed in atomic mass units . The terms mass and weight are used interchangeably in this case. The atomic weight given on the periodic table is a weighted average of isotopic masses found in a typical terrestrial sample of the element.

General chemistry English glossary.      Английский глоссарий общей химии.