Definition Of Atomic Mass

Atomic mass or weight definition atomic mass which is also known as atomic weight is the average mass of atoms of an element calculated using the relative abundance of isotopes in a naturally occurring element.
Definition of atomic mass. Atomic mass indicates the size of an atom. Atomic mass definition is the mass of an atom usually expressed in atomic mass units. Da or u where 1 dalton is defined as 1 12 of the mass of a single carbon 12 atom at rest. Kg the atomic mass is often expressed in the non si unit dalton symbol.
The protons and neutrons of the nucleus account for nearly all of the total mass of atoms with the electrons and nuclear.
Source : pinterest.com