Chemistry - Electrochemistry Question with Solution | TestHub

Consider the following reduction processes

$\text{Z}{\text{n}}^{2+}+\text{2}{\text{e}}^{-}\to \text{Zn}\left(\mathrm{s}\right);{\text{E}}^{\mathrm{o}}=-0.\text{76 V}$

$\text{C}{\text{a}}^{2+}+\text{2}{\text{e}}^{-}\to \text{Ca}\left(\mathrm{s}\right);{\text{E}}^{\mathrm{o}}=-2.\text{87 V}$

$\text{M}{\text{g}}^{2+}+\text{2}{\text{e}}^{-}\to \text{Mg}\left(\mathrm{s}\right);{\text{E}}^{\mathrm{o}}=-2.\text{36 V}$

$\text{N}{\text{i}}^{2+}+\text{2}{\text{e}}^{-}\to \text{Ni}\left(\mathrm{s}\right);{\text{E}}^{\mathrm{o}}=-0.\text{25 V}$

The reduction power of the metals increases in the order