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The E(M^(3+)//M^(2+) values for Cr, Mn...

The `E_(M^(3+)//M^(2+)` values for ` Cr`, Mn, Fe and ` Co` are ` 0.41, + 1.57 , + 0.77` and `+1.97 V` respectively. For which one of these metals the change in oxidation state from ` =2 ` to ` 3` is easiest :

A

` Co`

B

` Mn`

C

` Fe`

D

` Cr`

Text Solution

Verified by Experts

The correct Answer is:
D
More is `E_(RP),^@` more is the tendency to get reduced or lesser is tendency to get oxidised . ` E_(RPC_r^(3+)//Cr^(2+)//^@` is maximum among all.
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