Question

Why carbon 12 atom is taken as relative mass unit

Answer 1

the relative atomic masses  of all elements hve been found with respect to an atom of carbon -12.unlike oxygen it doesn,t react with all elements 2 form compounds . .and unlike hydrogen ,the masses of other elements didn't come out to be fractional...........so...........it is taken as rmu

Answer 2

1. Unlike oxygen and hydrogen, which exhibit various isotopes in higher proportions, carbon-12 is the single most abundant (98% of available carbon) isotope of carbon.
2. It is also very stable.
3. Hence, it makes more accurate unit of measuring mass and is used to define atomic mass unit.

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