Q.

Maximum bond angle at nitrogen is present in which of the following                         [2015]
 

1 NO2+  
2 NO3-  
3 NO2  
4 NO2-  

Ans.

(1)

Species NO3- NO2 NO2- NO2+
Hybridisation sp2 sp2 sp2 sp
Bond angle 120° 134° 115° 180°

 

So, NO2+ has maximum bond angle.