Answer:
I might be a little late but in case anyone in the future needs it the answer is 2I^-(aq) ---> I_2(g)+2e^-
The balanced half reaction describing the oxidation of aqueous iodide anions to gaseous diiodine is;
Definition:
Oxidation as determined by oxidation Numbers simply refers to an increase in oxidation number.
In essence, the chemical reaction above involves the increase in oxidation number of Iodine, I from -1 to 0.
The half reaction is thus so, because gaseous diiodide is a diatomic element.
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