Question

The graph between the binding energy per nucleon $\left(E\right)$ and atomic mass number $\left(A\right)$ is as :

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

The binding energy per nucleon is almost constant (independent of mass number) from $30<A<170$.

The binding energy per nucleon is lower for light nucleus $(A<30)$ and heavy nucleus $(A>170)$.

So, the binding energy per nucleon curve increases with mass number and reaches maximum, then decreases.

Hence, option $\left(D\right)$ is correct.