The number of nucleons in an atom or ion is the same as the
A)atomic number.
B)charge on the atom or ion.
C)mass number.
D)none of these

Question

Quizplus · Accepted Answer

The mass number is the total number of protons and neutrons in the nucleus of an atom. It is also the number used to identify isotopes of an element. Therefore, the number of nucleons in an atom or ion is the same as the mass number, not the atomic number or the charge.

The Number of Nucleons in an Atom or Ion Is