Mn and Mp represent mass of neutron and proton respectively. If an element having nuclear mass M has N-neutron and Z-proton, then the correct relation will be
A
M<[NMn+ZMp]
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B
M>[NMn+ZMp]
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C
M=[NMn+ZMp]
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D
M=N[Mn+Mp]
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Solution
The correct option is AM<[NMn+ZMp] Actual mass of the nucleus is always less than total mass of nucleons so M<[NMn+ZMp]