For which of the following is the E^{ominus}( | vedclass

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(D) The standard electrode potential $E^{\ominus}(M^{3+} / M^{2+})$ represents the ease of reduction of $M^{3+}$ to $M^{2+}$.For $Mn^{3+} / Mn^{2+}$,t

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$Cr$

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(D) The standard electrode potential $E^{\ominus}(M^{3+} / M^{2+})$ represents the ease of reduction of $M^{3+}$ to $M^{2+}$.For $Mn^{3+} / Mn^{2+}$,the value is $+1.57 \ V$ (high positive due to stable $d^5$ configuration of $Mn^{2+}$).For $Co^{3+} / Co^{2+}$,the value is $+1.97 \ V$.For $Fe^{3+} / Fe^{2+}$,the value is $+0.77 \ V$.For $Cr^{3+} / Cr^{2+}$,the value is $-0.41 \ V$.Since the value for $Cr$ is negative,the correct option is $D$.

For which of the following is the $E^{\ominus}(M^{3+} / M^{2+})$ value negative?

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