Question

define relative atomic mass​

Answer 1

Answer:

The relative atomic mass of an element is the average mass of its atoms, compared to 1/12th the mass of a carbon-12 atom. The relative atomic mass, A r, of an element is calculated from: the mass numbers of its isotopes. the abundance of these isotopes.

Explanation:

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Answer 2

Relative atomic mass (symbol: Ar) 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.

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