Explanation:
The given following standard cell notation.
Mg(s) | Mg^2+ (aq) || Aq^+(aq) | Aq(s)
Oxidation:
[tex]Mg(s)\rightarrow Mg^{2+}+2e^-[/tex]....(1)
Reduction:
[tex]Ag^+(aq)+1e^-\rightarrow Ag(s)[/tex]...(2)
Overall redox reaction: (1)+2 × (2)
[tex]Mg(s)+2Ag^+(aq)\rightarrow Mg^{2+}+2Ag(s)[/tex]