N2=(σ1s)2(σ1s∗)2(σ2s)2(σ2s∗)2(π2px)2(π2py)2(σ2pz)2(π∗2px)0(π2py∗)0(π2pz∗)0
bond order=21×(10−4)=3
NO=N2=(σ1s)2(σ1s∗)2(σ2s)2(σ2s∗)2(π2px)2(π2py)2(σ2pz)1(π∗2px)0(π2py∗)0(π2pz∗)0
bond order =21×(9−4)=2.5
N2 has not any unpaired electron so it is diamagnetic whereas NO has 1 unpaired electron so it is paramagnetic.
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