A) \[Mn>Cr>Fe>Co\]
B) \[Cr>Fe>Mn>Co\]
C) \[Fe>Mn>Cr>Co\]
D) \[Cr>Mn>Fe>Co\]
Correct Answer: A
Solution :
Generally across the first transition series, the negative values for standard electrode potential decrease (exception Mn- due to stable d5 configuration) Standard electrode potential -Mn | Cr | Fe | Co | |
\[{{M}^{2+}}/M\] | -1.18 | -0.90 | -0.44 | -0.28 eV |
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