Nuclear Binding Energy

The energy equivalent to that of mass defect, i.e., the energy required for holding the nucleons together in a nucleus, is called the Binding Energy of the nucleus.

The ratio of the binding energy E_b​ of a nucleus to the number of nucleons A in that nucleus is called Binding Energy Per Nucleon.

The definite amount of energies associated with the electrons in different orbits of an atom are called the Energy Levels (of that atom).

The energy required to take an electron from the ground state to an excited state is called the Excitation Energy of the electron in that state.

The minimum energy required to make an electron free from the nucleus is called the Binding Energy of an electron.

The minimum amount of energy required to be given to an electron in the ground state of an atom to set the electron free is called the Ionization Energy of that atom.

E_b = ΔM ⋅ c²

E_b ​= [(Zm_p​ + (A − Z)m_n​) − M] × c²

E_bn ​= \[\frac {E_b}{A}\]