Chemistry - Electrochemistry Question with Solution | TestHub

Given:
$\mathrm{C}{\mathrm{o}}^{3+}+{\mathrm{e}}^{-}\to \mathrm{C}{\mathrm{o}}^{2+};\mathrm{E}°=+1.81\mathrm{V}$
${\mathrm{P}\mathrm{b}}^{3+}+{2\mathrm{e}}^{-}\to {\mathrm{P}\mathrm{b}}^{2+};\mathrm{E}°=+1.67\mathrm{V}$
$\mathrm{C}{\mathrm{e}}^{4+}+{\mathrm{e}}^{-}\to \mathrm{C}{\mathrm{e}}^{3+};\mathrm{E}°=+1.61\mathrm{V}$
${\mathrm{B}\mathrm{i}}^{3+}+{3\mathrm{e}}^{-}\to \mathrm{B}\mathrm{i};\mathrm{E}°=+0.20\mathrm{V}$
Oxidizing power of the species will increase in the order: