Question

The atomic mass of an atom equals the sum of the masses of the

Answer 1

HEY DEAR ...

The atomic mass of an atom equals the sum of the masses of the protons and neutrons.

A=atomic mass
Z=atomic number  (or number of protons=
N=number of neutrons.

A=Z+N

Answer =) protons and neutrons .

Answer 2

Atomic mass is equal to the total number of protons and neutrons in the nucleus of an atom ..

Since electron carry negligible mass,the mass of an atom is almost the mass of the mass of protons and neutrons of an atom ...