For which one of the following elements,the M | vedclass

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(C) Element$SEP 	ext{ } (M^{3+} / M^{2+})$$V$$V^{3+} / V^{2+} = -0.26 \ V$$Cr$$Cr^{3+} / Cr^{2+} = -0.4 \ V$$Mn$$Mn^{3+} / Mn^{2+} = +1.5 \ V$$Fe$$Fe

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$Mn$

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(C) Element$SEP 	ext{ } (M^{3+} / M^{2+})$$V$$V^{3+} / V^{2+} = -0.26 \ V$$Cr$$Cr^{3+} / Cr^{2+} = -0.4 \ V$$Mn$$Mn^{3+} / Mn^{2+} = +1.5 \ V$$Fe$$Fe^{3+} / Fe^{2+} = +0.77 \ V$The standard electrode potential $(SEP)$ for the $Mn^{3+} / Mn^{2+}$ couple is the most positive $(+1.5 \ V)$ among the given elements. This is because $Mn^{2+}$ has a stable $d^5$ electronic configuration,making the reduction of $Mn^{3+}$ to $Mn^{2+}$ highly favorable.

For which one of the following elements,the $M^{3+} / M^{2+}$ standard electrode potential is more positive?

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