What is the definition of nuclear energy?

Answer:Nuclear energy is the energy that holds together the nucleus of atoms. Atoms are the most simple blocks that make up matter. Every atom has in its center a very small nucleus.

Nuclear energy is energy in the nucleus (core) of an atom

Explanation:

Atoms are tiny particles that make up every object in the universe. There is enormous energy in the bonds that hold atoms together. Nuclear energy can be used to make electricity ... Nuclear power plants use nuclear fission to produce electricity.