Question

The atomic mass of an element is equal to the number of?

Answer 1

Just remember that most of the mass of an atom is in its nucleus, Its electrons are ALMOST mass-less. Therefore the two main subatomic particles in the nucleus of an atom are the proton and the neutron. ( atomic mass= number of protons + neutrons)

Answer 2

Atomic mass is equal to no of proton and neutron present in nucleous of atom.