Among the following oxides of p-block elements, the number of oxides having amphoteric nature is: \[\text{Cl}_2\text{O}_7, \, \text{CO}, \, \text{PbO}_2, \, \text{N}_2\text{O}, \, \text{NO}, \, \text{Al}_2\text{O}_3, \, \text{SiO}_2, \, \text{N}_2\text{O}_5, \, \text{SnO}_2\]
Correct Answer: 3
Solution and Explanation
Acidic oxide: Cl2O7, SiO2, N2O5
Neutral oxide: CO, NO, N2O
Amphoteric oxide: Al2O3, SnO2, PbO2
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