Chemistry - Electrochemistry Question with Solution | TestHub

A solution containing one mole per litre each of $\mathrm{Cu}{\left({\mathrm{NO}}_3\right)}_2,{\mathrm{AgNO}}_3,{\mathrm{Hg}}_2{\left({\mathrm{NO}}_3\right)}_2,\mathrm{Mg}{\left({\mathrm{NO}}_3\right)}_2$ is being electrolysed by using inert electrodes. The values of standard potentials are ${\mathrm{E}}_{{\mathrm{Ag}}^{+}/\mathrm{Ag}}^{\mathrm{o}}=0.80\mathrm{V},{\mathrm{E}}_{{\mathrm{Hg}}_2^{2+}/\mathrm{Hg}}^{\mathrm{o}}=0.79\mathrm{V},{\mathrm{E}}_{{\mathrm{Cu}}^{2+}/\mathrm{Cu}}^{\mathrm{o}}=0.34\mathrm{V}$ and ${\mathrm{E}}_{{\mathrm{Mg}}^{2+}/\mathrm{Mg}}^{\mathrm{o}}=-2.3\mathrm{V}$ with increasing voltage, the sequence of deposition of metals on the cathode will be