Answer:
[tex]Fe\rightarrow Fe^{2+}+2e^-[/tex]
Explanation:
The given cell notation is:-
[tex]Fe_{(s)}|Fe^{3+}_{(aq)}||Cl_2_{(g)}|Cl^-_{(aq)}|Pt[/tex]
Oxidation reaction is defined as the chemical reaction in which an atom looses its electrons. The oxidation number of the atom gets increased during this reaction.
[tex]X\rightarrow X^{n+}+ne^-[/tex]
The oxidation half reaction of the cell is:-
[tex]Fe\rightarrow Fe^{2+}+2e^-[/tex]