Mass defect of an atom refers to: (A) Inaccurate measurement of mas...

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Mass defect of an atom refers to:
(A) Inaccurate measurement of mass of nucleons
\( \mathrm{P} \)
(B) Mass annihilated to produce energy to bind the nucleus
W
(C) Packing fraction
(D) Difference in number of neutrons and protons in the nucleus
\[
2^{X^{A} \rightarrow} y^{A-4}+{ }_{2}^{4}+\theta
\]
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