Question

why is aluminium oxide is reformed to as amphoteric acid​

Answer 1

Explanation:

The products for these reactions can be verified for aluminium and gallium oxides from their Wikipedia pages respectively. So we can see that one major reason for the amphoteric nature of oxides can be their bridged structures, which allows them to react with both acids and bases as illustrated above

Answer 2

Answer:

The Aluminium oxide is also called as the amphoteric acid because it reacts as a base and also as an acid