Which of the following species is paramagnetic ?
Text Solution
Verified by ExpertsA
NO– is derivative of O2 and isoelectronic with O2.
So ( 
1s)2 ( 
*1s)2 ( 
2s)2 ( 
*2s)2 ( 
2pz)2 ( 
2p2x = 
2p2y ) ( 
*2px1 = 
*2p1y) and 2 unpaired electrons.
O22– : ( 
1s)2 ( 
*1s)2 ( 
2s)2 ( 
*2s)2
( 
2pz)2 ( 
2p2x = 
2p2y ) ( 
*2px2 = 
*2p2y) and no unpaired electrons.
CN– is derivative of and isoelectronic with N2 : ( 
1s)2 ( 
*1s)2 ( 
2s)2 ( 
*2s)2 ( 
2p2x = 
2p2y ) ( 
2pz)2 and no unpaired electron.
CO is derivative of and isoelectronic with N2 : ( 
1s)2
( 
*1s)2 ( 
2s)2 ( 
*2s)2 ( 
2p2x = 
2p2y ) ( 
2pz)2 and no unpaired electron.
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