Consult the table of standard electrode potential and suggest three substances that can oxidize `Fe^(2+)` ions under suitable conditions.

Explanation

`Fe^(2+)rarr Fe^(3+)+e^(-),` `E^(c-)``_(o x i d)=-0.77V`
Only those substances can oxidize `Fe^(2+)` to `Fe^(3+)` whiCHM are stonger oxidizing agents than `0.77V` so that the `EMF` of the cell reaction is positive. This is so for elements lying below `Fe^(3+)|Fe^(2+)` in the electroCHMemical series, `e.g., Br_(2), Cl_(2), ` and `F_(2)`