The standard reduction potential at \( 25^{\circ} \mathrm{C} \) of \( \mathrm{Li}^{+} / \mathrm{...

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The standard reduction potential at \( 25^{\circ} \mathrm{C} \) of \( \mathrm{Li}^{+} / \mathrm{Li} \), \( \mathrm{Ba}^{2+} / \mathrm{Ba}, \mathrm{Na}^{+} / \mathrm{Na} \) and \( \mathrm{Mg}^{2+} / \mathrm{Mg} \) are \( -3.05,-2.73,\) \( -2.71 \) and \( -2.37 \) volt respectively. Which one of the following is the strongest oxidizing agent?
(A) \( \mathrm{Na}^{+} \)
(B) \( \mathrm{Li}^{+} \)
(C) \( \mathrm{Ba}^{2+} \)
(D) \( \mathrm{Mg}^{2+} \)
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