The pairs of species of oxygen and their magnetic behaviour are noted below. Which of the following presents the correct description ?

Options

A. `O, O_2^(2-)` - Both paramagnetic
B. `O_2^- , O_2^(2-)` - Both diamagnetic
C. `O^(+), O_2^(2-)` - Both paramagnetic
D. `O_2^+ , O_2` - Both paramagnetic

Answer

D

Explanation

`O_2^+=KKsigma2s^2 " " sigma^**2s^2 " " sigma2P_z^2 " " (pi2P_x^2=pi2P_y^2) " " (pi^**2P_x^1)`
`O_2=KKsigma2s^2 " " sigma^**2s^2 " " sigma2P_z^2 " " (pi2P_z^2=pi2P_z^2) " " (pi^**2P_x^1=pi^**2P_y^1)`
`O_2 " and " O_2^+` contain unpaired electron in `pi^**` ABMO so paramagnetic.