Question

$M_n$ and $M_p$ 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. $M<[N{M}_n+Z{M}_p]$
• B. $M>[N{M}_n+Z{M}_p]$
• C. $M=[N{M}_n+Z{M}_p]$
• D. $M=N[M_n+M_p]$

Answer 1

The correct option is A $M<[N{M}_n+Z{M}_p]$

Actual mass of the nucleus is always less than total mass of nucleons so $M<[N{M}_n+Z{M}_p]$