Question

what is the mass of one atom of an element called ?

Answer 1

Hey
Mass of 1 atom of element is called atomic mass.
It is expressed in amu( atomic mass unit).

Hope it helps :))

Answer 2

Thanks for your question !

Atomic mass is the mass of one atom of an element.

So your answer is Atomic mass. It is denoted as ma.

It is equivalent to the
The number of protons and neutrons in the atoms of that chemical element.

It is denoted by u, and Da i.e., they are atomic mass' units.

Simply, we can say atomic mass is used to measure the atom's size, in short.