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The correct order of E(M^(2+)//M)^(@) Va...

The correct order of `E_(M^(2+)//M)^(@)` Values with negative sign for the four successive elements `Cr, Mn, Fe` and `Co` is:

A

`Fe gt Mn gt Cr gt Co`

B

`Cr gt Mn gt Fe gt Co`

C

`Mn gt Cr gt Fe gt Co`

D

`Cr gt Fe gt Mn gt Co`

Text Solution

Verified by Experts

The correct Answer is:
C
`E^(@)` values of for `M^(2+)|M` with negative sign are
`Cr = -0.9 V ,Mn = -1.18 V , Fe = -0.44 V, ` Co = -28 V
Thus order is `Mn gt Cr gt Fe gt Co`
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