Whats the mass of an atom that contains 28 protons, 28 electron, and 34 neutrons

The mass of an tom that contains 28 protons, 28 electrons and 34 neutrons is 62 amu

Explanation

The mass of the atom (mass number) is total number of protons + total number of neutrons.

The units of mass number is amu (atomic mass units)

total number of protons = 28

total number of neutrons = 34

mass of atoms is therefore = 28 + 34 = 62 amu