Among the following oxides of p-block elements, number of oxides having amphoteric nature is . Cl2O7, CO, PbO2, N2O, NO, Al2O3, SiO2, N2O5, SnO2
Answer
3
Solution
Acidic: Cl2O7, SiO2, N2O5 (non-metal oxides)
Neutral: CO, N2O, NO
Amphoteric: Al2O3, SnO2, PbO2
∵ Al, Sn, Pb lie near the metal/non-metal border
∴ amphoteric oxides = 3
Answer: 3