Atoms And Nuclei

For a nucleus \({ }_{\mathrm{A}}^{\mathrm{A}} \mathrm{X}\) having mass number \(\mathrm{A}\) and atomic number \(\mathrm{Z}\)

A. The surface energy per nucleon \(\left(b_{\mathrm{s}}\right)=-a_{1} A^{2 / 3}\).

B. The Coulomb contribution to the binding energy \(\mathrm{b}_{\mathrm{c}}=-a_{2} \frac{Z(Z-1)}{A^{4 / 3}}\)

C. The volume energy \(\mathrm{b}_{\mathrm{v}}=a_{3} A\)

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 12 nucleons. ( \(a_{1}, a_{2}\) and \(a_{3}\) are constants)

Choose the most appropriate answer from the options given below: