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Mole Concept

Mass defect o...

Question

Mass defect of an atom refers to

A

inaccurate measurement of mass of neutrons

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B

mass annihilated to produce energy to bind the nucleons

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C

packing fraction

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D

difference in the number of neutrons and protons in the nucleus

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Solution

The correct option is B mass annihilated to produce energy to bind the nucleons
$M c^{2} + (B . E) = (N_{m N} + Z_{m P}) c^{2}$
where,
$M_{c} =$ total mass of nucleus.
$N_{m N} =$ total mass of neutrons
$N_{m P} =$ total mass of protons

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