In an atom, the atomic nucleus is a very suitable structure. Therefore, nucleons in every nucleus are bound together with short range interacting forces called nuclear forces. A definite amount of work has to be done to separate the nucleons from the nucleus to such a distance that there is no interaction between them. This work done is a measure of binding energy of the nucleus. Let us discuss some more about the atomic binding energy.
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Where m is the mass defect in kg and
c be the velocity of light in vacuum.
Here we get the energy in Joule.
E = m × 931.5 MeV, where m is the mass defect in amu and we get the energy in MeV.