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If `m,m_n` and `m_p` are masses of `._Z X^A` nucleus, neutron and proton respectively.

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If `m,m_n` and `m_p` are masses of `._Z X^A` nucleus, neutron and proton respectively.
A. `m = (A - Z)m_n + Z m_p`
B. `m lt (A - Z)m_n + Z m_p`
C. `m gt (A - Z) m_n + Z m_p`
D. `m = (A - Z) m_p + Z m_p`
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Correct Answer - B
(b) Mass of nucleus is less than the sum of the masses of the constituent particles.
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