The correct order of the second ionisation potential of carbon, nitrogen, oxygen and fluorine is

Options

A. CgtNgtOgtF
B. OgtNgtFgtC
C. OgtFgtNgtC
D. FgtOgtNgtC

Answer

C

Explanation

For second IE compare `C^(+) (2s^(2)2p^(1)), N^(+) (2s^(2)2p^(2)),O^(+) (2s^(2)2p^(3)) ` and `F^(+) (2s^(2)2p^(4)).` obviously, the order of IE amont these unipositive species is `O^(+) gt F^(+) gt N^(+) gt C^(+)`.