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relative atomic mass
noun
- the ratio of the average mass per atom of the naturally occurring form of an element to one-twelfth the mass of an atom of carbon-12 Ar r.a.m. Former nameatomic weight
relative atomic mass
/ rĕl′ə-tĭv /
- See atomic weight
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Example Sentences
Thus, in the modern periodic table, the elements are arranged according to their atomic number - not their relative atomic mass.
From BBC
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