Question

what is atomic mass unit????? explain by expanding it plz answer fast

Answer 1

An atomic mass or amu is physical constant equal to one 12th of the mass of an unboud atom of carbon-12. It is a unit of mass used to express atomic masses and molecular masses. When mass is expressed in amu, it roughly reflects the sum of the number of protons and neutrons in the atomic nucleus. The symbol for the unit is u(unified atomic mass unit) or Da(dalton), although amu may still be used.
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