If m,mn and mp are masses of .Z X^A nucl...

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

`m lt (A - Z)m_n + Zm_p`

`m = (A - Z)m_n + Zm_p`

`m = (A - Z)m_p + Zm_n`

`m gt (A - Z) m_n + Zm_p`

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Verified by Experts

The correct Answer is:

(a) The mass of nucleus formed is always less than the sum of the masses of the constituent protons and neutrons, i.e., `m lt (A - Z) m_n + zm_p`.

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