Question

Relative to the sum of the masses of its constituent nucleons, the mass of a nucleus is: greater the same smaller sometimes greater and sometimes smaller

Answer 1

The mass of a nucleus is smaller.

Step-by-step explanation:

Answer 2

Answer is: smaller.

Protons and neutrons are in the nucleus of an atom.

Nuclear energy is the energy found in the nucleus of an atom.

The missing mass of a nucleus is called its binding energy, the energy needed to break it up into separate protons and neutrons.

Average binding energy per nucleon equals total binding energy divided by mass number (sum of protons and neutrons in an atom).