Question

The standard reduction potential of $L{i}^{+},B{a}^{2+},N{a}^{+}$and $M{g}^{2+}$ are $-3.05,-2.73,-2.71$ and $-2.37$ volts respectively. Which one is the strongest reducing agent?

• A. Li
• B. Na
• C. Mg
• D. Ba

Answer 1

Answer: (A)

Smaller the value of reduction potential; stronger will be reducing agent Reduction potential value indicate the ease of oxidation. Reducing agent itself undergoes oxidation.
$\because L{i}^{+}$ has least reduction potential.
$\therefore$ It is strongest reducing agent among given choices.