Which of the following is diamagnetic ?

Options

A. `H^(2+)`
B. `He^(2+)`
C. `O_(2)`
D. `N_(2)`

Answer

D

Explanation

`N_(2)(14): KK, sigma 2s^(2), sigma^(**) 2s^(2), pi 2p_(x)^(2)= pi 2p_(y)^(2), sigma2p_(z)^(2)`. It does not have any unpaired electrons. Hence, It is diamagnetic. `H_(2)^(+)` (1 electron), `He_(2)^(+)` (3 electrons) and `O_(2)` (16 electrons) are paramagnetic