Question

Why the mass of nucleus is always less than the sum of its constituents?

Answer 1

The mass of the nucleus is always slightlyless than the sum of the masses of its constituents protons and neutrons due to the fact that some energy is used up in binding constituent proton and neutrons together within a small volume of nucleus. ... As a result mass of nucleus is slightlyless than its constituents.

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Answer 2

Mass of nucleous is less than mass of constituent because ..............................