For a nucleus _z^A X having mass number A and atomic number Z A. The surface energy per nucleon ( b_s )=-a_1 A^2 / 3. B. The Coulomb contribution to…

For a nucleus $\displaystyle { }_{\mathrm{z}}^{\mathrm{A}} \mathrm{X}$ having mass number A and atomic number Z A. The surface energy per nucleon $\displaystyle \left(\mathrm{b}_{\mathrm{s}}\right)=-a_1 A^{2 / 3}$. B. The Coulomb contribution to the binding energy $\displaystyle \mathrm{b}_{\mathrm{c}}=-a_2 \frac{Z(Z-1)}{A^{4 / 3}}$ C. The volume energy $\displaystyle \mathrm{b}_{\mathrm{v}}=a_3 A$ D. Decrease in the binding energy is proportional to surface area. E. While estimating the surface energy, it is assumed that each nucleon interacts with $\displaystyle 12$ nucleons. ( $\displaystyle a_1, a_2$ and $\displaystyle a_3$ are constants) Choose the most appropriate answer from the options given below: