Question

Define atomic mass unit. Why is it needed?​

Answer 1

Answer:

An atomic mass unit (symbolized AMU or amu) is defined as precisely 1/12 the mass of an atom of carbon -12. The carbon -12 (C -12) atom has six protons and six neutrons in its nucleus. The AMU is used to express the relative masses of, and thereby differentiate between, various isotopes of elements.

Explanation:

Answer 2

Explanation:

atomic mass unit is defined as precisely 1/12 the mass of an atom of carbon -12. Atomic mass unit is used to express the relative masses of , and thereby differentiate between , various isotopes of elements.