According to MO theory which of the following lists ranks the nitrogen species in terms of increasing bond order :

Question

( A ) ${N_2}<{N_2^{2-}}<{N_2^{-}}$ <br/> ( B ) $N_2^{2-} < N_2^- < N_2$
( C ) ${N_2}^{-}<{N_2}{^2}<{N_2}$ <br/> ( D ) ${N_2}^{-}<{N_2}^{2-}<{N_2}$</span>