Question

Why some metals form amphoteric oxides? Explain.

Answer 1

Answer:

Many metals (such as copper, zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. Amphoterism depends on the oxidation states of the oxide. ... In chemistry, an amphoteric compound is a molecule or ion that can react both as an acid as well as a base.

Some oxides react with both acids and bases, that is, they are amphoteric. For example, Al2O3 is an amphoteric oxide. The lighter elements of Groups 2 and 13, some of the d -block elements, and the heavier elements of Groups 14 and 15 have amphoteric oxides.

Answer 2

some metals are amphoteric oxides becouse they can react with acid as well as base !

example:-

aluminum oxide, zinc oxide.