Atomic Masses and Composition of Nucleus

Physics

definition

Atomic mass unit

An atomic mass unit (a.m.u) is defined as precisely the mass of carbon-12 atom. It is a unit of mass of elements e.g the atomic mass of Helium is 4 a.m.u.

diagram

Atomic masses of various elements

The atomic masses of various elements are:

definition

Atomic mass unit

Atomic mass unit (u) is defined as of the mass of the carbon
atom. According to this definition