Question

define atomic mass of an element?mention the unit of measuring the atomic mass of element.

Answer 1

Atomic mass of an element is defined as the sum of protons and neutrons present in the nucleus of an atom. The unit of atomic mass is atomic mass unit.

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Answer 2

the atomic mass of an element specific isotope.most often expressed in unified atomic mass unit.the atomic mass is total mass electron proton neutron of single atom.