Question

$M_{n}$and$M_{p}$represent mass of neutron and proton respectively. If an element having atomic mass M has N-neutron and Z-proton, then the correct relation will be.

• A. $M < \lbrack NM_{n} + ZM_{P}\rbrack$
• B. $M > \lbrack NM_{n} + ZM_{P}\rbrack$
• C. $M = \lbrack NM_{n} + ZM_{P}\rbrack$
• D. $M = N\lbrack M_{n} + M_{P}\rbrack$

Answer 1

Answer: (A)

$M < \lbrack NM_{n} + ZM_{P}\rbrack$

Answer 2

Actual mass of the nucleus is always less than total mass of nucleons so $M < (NM_{n} + Zm_{p})$.