Atoms And Nuclei Question 190

Question: If m, mn and mp are the masses of $ _{Z}X^{A} $ nucleus, neutron and proton respectively [KCET 2003; CPMT 2003]

Options:

A) $ m<{{(A-Z)}{m{n}}}+Zm_{p} $

B) $ m=(A-Z)m_{n}+Zm_{p} $

C) $ m=(A-Z)m_{p}+Zm_{n} $

D) $ m>(A-Z)m_{n}+Zm_{p} $

Show Answer

Answer:

Correct Answer: A

Solution:

The mass of nucleus formed is always less than the sum of the masses of the constituent protons and neutrons i.e. $ m<(A-Z)m_{n}+zm_{p} $ .



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