A single bond is equal to a bond A double bond is 1 bond and 1 bond Hybridisation=Numberofsigmabonds+numberoflonepairslonepairs HNO2: H-O-N=O Hybridisation of N-atom in HNO2 and HNO3 is sp2. if t so the hybridization around Central N is 1 bond and 2 bond
The Nitrogen bonds in two areas with an unpaired shared of electrons. Multiple bonds are considered to be one bonding area. So the hybridization would be sp^2. Hence option 1 is correct.