Question

anyone please define atomic mass unit
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Answer 1

A unit of mass used to express atomic and molecular weights, equal to one - twelfth of the mass of an atom of carbon -12.

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Answer 2

Explanation:

atomic mass unit is defined as 1/12 the mass of an atom of carbon -12

the carbon -12 ( c-12 ) atom has 6 protons and 6 neutrons in it's nucleus

The atomic mass unit is used to express the relative masses and to differentiate between various isotopes of elements