A neutral atom will have the lowest ionisation potential when its electronic configuration is

Options

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

Answer

D