By MO theory. Will BN be paramagnetic or diamagnetic. Since the last 2 orbitals are unpaired i thought it to be para. However and is diamagnetic. Can I get a explanation and method for finding it.

After σ∗2s, π2px= π2py will come and after that σ2pz. So at last it will be π2px^2= π2py^2,therefore no unpaired electron and diamagnetic nature

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