1.

d pi- p pi bonding is possible in

Answer»

`NO_(overset(-)3), NO_(overset(-)2), N^(3-),CN^(-)`
`NH_(3),PH_(3),BiH_(3)`
`P_(2)O_(3), P_(2)O_(5), PO_(4)^(3-)`
`CO,NO,CO_(2),NO_(2)`

Answer :C


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