Question

Which of the following oxides of chromium is amphoteric in nature?

Options

• CrO

• Cr₂O₃

• CrO₃

• CrO₅

Answer 1

Cr₂O₃

Explanation:

The Cr₂O₃ (chromium(III) oxide) is amphoteric in nature, which means it reacts with both acids and bases to form salts and water. This property is typical of many metal oxides in the +3 oxidation state. In contrast, CrO is basic, CrO₃ is acidic, and CrO₅ is a peroxide and unstable, not amphoteric.