Hello Sir

the question is “Determine whether Na2O2 is paramagnetic or not. I have learned to how to determine this by writing MO configuration & then counting if there are any unpaired e- .( I hope am right in saying that). But the problem is I only know MO configuration upto Ne2(that is upto 20 electrons) so how will I write electronic configuration of Na2O2

Please Help

'x' gm of a compound A3B2C5 contains 'y' gm of A atoms

 

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how to represent the possible fischer projections for 2-bromohexane