A sudden jum- between the values of second and third ionisation energies of an atom would be associated with the electronic configuration.

Options

A. `1s^(2),2s^(2)p^(6),3s^(1)`
B. `1s^(2),2s^(2)p^(6),3s^(2)p^(1)`
C. `1s^(2),2s^(2)p^(6),3s^(2)p^(2)`
D. `1s^(2),2s^(2)p^(6),3s^(2)`

Answer

D

Explanation

`1s^(2)2s^(2)p^(6)3s^(2)`. In group III transition `e^(-)` is to be removed from stable configuration.