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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

`E^(@)` values for `Mn^(2+) //Mn` with negative signs are `:`
`Cr = - 0.91 V,Mn= -1.18V, Fe = - 0.44 V, Co= - 0.28 V`
Thus, the order is `Mn gt Cr gtFe gt Co`
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