Question

what is mass defect write an expression for it​

Answer 1

Answer:

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Answer 2

Answer:

Mass defect (ΔM), of any nucleus A ZX is the difference in the mass of the nucleus (= M and the sum of masses of its constituent nucleons (= M') ΔM = M' - M. = [Z m p + (A - Z)m n] - M. where mo and m,, denote the mass of the proton and the neutron respectively.