Question

The standard reduction potentials at ${25}^0$ C of $L{i}^{+}$ /Li , $B{a}^{2+}$ /Ba , $N{a}^{+}$ /Na and $M{g}^{2+}$ /Mg are -3.05 , -2.73 , -2.71 and -2.37 volt respectively. Which one of the following is the strongest oxidizing agent?

• A. Na⁺
• B. Li⁺
• C. Ba²⁺
• D. Mg²⁺

Answer 1

The correct option is D

Mg²⁺

As $M{g}^{2+}$ /Mg has the highest value of reduction potential, Mg ios the weakest reducing agent and hence, $M{g}^{2+}$ is the strongest oxidizing agent.