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

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CrO

Cr₂O₃

CrO₃

CrO₅

answer is B.

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Detailed Solution

The oxides of chromium which is amphoteric in nature is Cr₂O₃.

Cr₂O₃ is known as Chromium(III) oxide which is amphoteric in nature.

Cr₂O₃ reacts with bases and acids that is why it is atmospheric in nature while CrO is basic in nature and CrO₃ is acidic in nature.

The character of acid increases with increase in oxidation number.

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