Question

Define atomic mass unit?​

Answer 1

Atomic mass unit is the standard unit that is used for indicating mass on an atomic or molecular scale

Answer 2

See below

Step-by-step explanation:

A unified atomic mass unit (u) is ¹/₁₂ the mass of an atom of carbon-12.

It is approximately equal to 1.66 × 10⁻²⁴ g.