Question

define the relitive atomic mass unit​

Answer 1

Relative Atomic Mass. Relative atomic mass (Ar): the average mass of all an element's isotopes, measured relative to the mass of the isotope carbon-12 which is taken to be exactly 12 AMU (atomic mass units), equivalent to one mole of an element.

Answer 2

Explanation:

Relative Atomic Mass. Relative atomic mass (Ar): the average mass of all an element's isotopes, measured relative to the mass of the isotope carbon-12 which is taken to be exactly 12 AMU (atomic mass units), equivalent to one mole of an element.