Question

Which electronic configuration of an element has abnormally high difference between $2^{nd}$ and $3^{rd}$ I.E.?

• A. 1$s^2$, 2$s^2$, 2$p^6$, 3$s^1$
• B. 1$s^2$, 2$s^2$, 2$p^6$, 3$s^2$ ,3$p^1$
• C. 1$s^2$, 2$s^2$, 2$p^6$, 3$s^2$ ,3$p^2$
• D. 1$s^2$, 2$s^2$, 2$p^6$, 3$s^2$

Answer 1

The correct option is D

1$s^2$, 2$s^2$, 2$p^6$, 3$s^2$

An element which attains inert gas configuration after losing 2 electrons will have abnormally high difference between $2^{nd}$ and $3^{rd}$ I.E.