Why is the value for `(Mn^(3+))/(Mn^(2+))` couple much more positive than that for `(Cr^(3+))/
Channel: Doubtnut
Date: 2020-08-02

Why is the value for `(Mn^(3+))/(Mn^(2+))` couple much more positive than that for `(Cr^(3+))/(Cr^(2+))` or `(Fe^(3+))/(Fe^(2+))`? Explain