Question

The electronic configuration with the highest ionization enthalpy is:

• A. $\left[\text{A}\text{r}\right]3{\text{d}}^{10}4{\text{s}}^{2}4{\text{p}}^3$
• B. $\left[\text{N}\text{e}\right]3{\text{s}}^{2}3{\text{p}}^1$
• C. $\left[\text{N}\text{e}\right]3{\text{s}}^{2}3{\text{p}}^3$
• D. $\left[\text{N}\text{e}\right]3{\text{s}}^{2}3{\text{p}}^2$

Answer 1

Answer: (C)

(i) Ionisation energy decrease with increasing atomic radius.
(ii) Half filled and completely filled electronic configuration are extra stable.