What is mass defect ?

The binding energy of an isotope of chlorine is 298 MeV. What is the mass defect of this chlorine nucleus in atomic mass units?

Atomic mass of ._16^32S in 31.97 u.If masses of neutron and H atom are 1.0078 u respectively.What is the mass defect?

What is the mass defect of ""_(50)^(120)Sn (atomic mass =119.902 200 u)? The hydrogen atom has a mass of 1.00783 u, and the neutron has a mass of 1.008 67 u.

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What is meant by mass defect?

What is meant by mass defect of a nucleus? How is it related to its binding energy?