In the following, the element with 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. `[Ne]3s^(2)3p^(4)`

Answer

B

Explanation

Half-filled orbitals and fully filled orbitals are more stable and hence they have higher ionisation energies. So `[Ne] 3s^(2)3p^(3)` has the highest ionisation energy.