Question

What is unified atomic mass? Write its unit and value​

Answer 1

Answer:

The unified atomic mass unit (u), or dalton (Da), is a unit of atomic and molecular mass. By definition it is one twelfth of the mass of an unbound carbon-12 (12C) atom, at rest and in its ground state. ... 1 u ≈ 1.660 538 782(83) × 10−27 kg.