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Why Cr^(2+) is strongly reducing while M...

Why `Cr^(2+)` is strongly reducing while `Mn^(3+)` is strongly oxidising ?

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`Cr^(3+)//Cr^(2+)` has negative value of standard electrode potential ( - 0.41 V) and `Mn^(3+)//Mn^(2+)` have positive value (+1.57 V) . `Cr^(2+)` can undergo oxidation and acts are reducing agent . `Mn^(2+)` can undergo reduction and is oxdizing agent .
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