Two pi and half sigma bonds are present in

N2⊕⇒BO=2.5⇒π− Bond =2 and σ− Bond =12N2⇒BO=3.0⇒[π-Bond =2 and σ-Bond =1]O2⊕⇒BO=2.5⇒[π-Bond =1.5 and σ-Bond =1]O2⇒BO=2⇒[π-Bond =1 and σ-Bond = 1 ]