Which of the following is amphoteric oxi...

Which of the following is amphoteric oxide ? `Mn_(2)O_(7), CrO_(3), Cr_(2)O_(3), CrO, V_(2)O_(5), V_(2)O_(4)`

A

`V_(2)O_(5), Cr_(2)O_(3)`

B

`Mn_(2)O_(7), CrO_(3)`

C

`CrO, V_(2)O_(5)`

D

`V_(2)O_(5), V_(2)O_(4)`

Text Solution

Verified by Experts

The correct Answer is:

A

Behaviour of metal oxides depends on the oxidation state of metal. Lower oxidation state : basic , higher oxidation state : acidic, intermediate oxidation state : amphoteric. So `overset(+5)(V_(2))O_(5)` and `overset(+3)(Cr_(2))O_(3)` are amphoteric.

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