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

1 Answer

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Best answer
Correct Answer - B
(b) is the correct answer
`E^(@)Mn^(2+)//Mn= -1.18 V`
`E^(@) Cr^(2+)//Cr= -0.91 V`
`E^(@) Fe^(2+)//Fe = -0.44 V`
`E^(@) CO^(2+)//Co= -0.28 V`

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