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Question

Question: Which of the following is not oxidation & reduction reaction?...

Which of the following is not oxidation & reduction reaction?

A

VO2+ ¾® V2O3

B

Na ¾®Na+

C

CrO42CrO_{4}^{2 -}¾®Cr2O72Cr_{2}O_{7}^{2 -}

D

Zn2+ ¾® Zn

Answer

CrO42CrO_{4}^{2 -}¾®Cr2O72Cr_{2}O_{7}^{2 -}

Explanation

Solution

O.N. of Cr remain unchanged.