Amongst the following elements (whose electronic configurations are given below) the one having the highest ionisation energy is:

Options

A. `[Ne]3s^(2)3p^(1)`
B. `[Ne]3s^(2)3p^(3)`
C. `[Ne] 3s^(2)3p^(2)`
D. `[Ar]3d^(10)4s^(2)4p^(3)`

Answer

B

Explanation

The configuration is half filled. The choice D also has half filled configuration but 4p orbitals lie farther awayfrom nucleus and can be easily removed.