In the following questions two or more options may be correct.

Diamagnetic species are those which contain no unpaired electrons. Which among the following are dimagnetic?

A. N₂

B. N₂^2-

C. O₂

D. O₂^2-

Diamagnetic species have no unpaired electrons in the molecular orbital. These species repel the magnetic field.

The N₂ molecule has no unpaired electron in the valence shell/molecular orbital. Thus, it is diamagnetic in nature.

N₂^2- and O₂ have unpaired electron so they are paramagnetic in nature.