According to Slater's Rule, the screening constant is the total of each electron's contributions to shielding the nucleus from force. Each orbital's contribution of electrons is unique, and Slater's Rule gives its values. The net pull or net positive charge felt by an electron in a multi-electron atom is also referred to as effective nuclear charge. The same value of screening constant for the valence electron, calculated from Slater's rule is $\begin{array}{r}{\mathrm{Na}}^{+},{ \mathrm{Mg}}^{2+},{ \mathrm{Al}}^{3+}\end{array}$.

Thus, the option B is correct.