Question

What do you know about atomic mass ?
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Answer 1

Answer:

The atomic mass is the mass of an atom. Although the SI unit of mass is the kilogram, atomic mass is often expressed in the non-SI unit atomic mass unit or unified mass or dalton, where 1 amu or 1 u or 1 Da is defined as 1⁄12 of the mass of a single carbon-12 atom, at rest.

Answer 2

Answer:

The atomic mass of an element is the average mass of the atoms of an element measured in the atomic mass unit (amu).

Explanation:

The mass of an atom is referred to as atomic mass. It shows how many times an atom of a certain element is heavier than one-twentieth (1/12th) the mass of one atom of carbon-12. The relative atomic masses of all elements have been calculated using a carbon-12 atom as a model. It's measured in amu (a millionth of a millionth of a millionth of (atomic mass unit). Relative atomic mass is defined as 1/12 of the mass of one carbon atom. It is devoid of a unit.

Mathematically,

mass of one atom of an element = atomic mass X (1/12th) of the mass of one atom of carbon.