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Explain why the E^(0) value for the (Mn)...

Explain why the `E^(0)` value for the `(Mn)^(3+) / (Mn)^(2+)` couple is much more positive than thát for `(Cr^(3+))/(Cr^(2+)) or (Fe^(3+))/(Fe^(2+))`

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Because .(Mn)^(3+)(3 (~d)^(+). has strong tendency to accept an, .e^(-). to undergo reduction. to racquire .3 (~d)^(5). configuration. forming .(Mn)^(2+). .(Mn)^(3 *)+(e)^(-) rarr (M) (n)^(2+). .[(Ar)] 3 (~d)^(4). .[(Ar)] 3 (~d)^(5). Hence the reduction potential of .(Mn)^(4) / (Mn)^(2+). is much more positive:
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