What are amphoteric oxides? Give two examples of amphoteric oxides.
Certain metal oxides which are both acidic and basic are called amphoteric oxides.
Example - Aluminium Oxide (Al 2 O 3 )
Aluminium Oxide Acting as a Basic Oxide
Aluminium Oxide Acting as an Acidic Oxide
Similarly, ZnO is also an amphoteric oxide.
Zinc Oxide Acting as a Basic Oxide
Zinc Oxide Acting as an Acidic Oxide