Which species is the strongest oxidizing agent based on the given standard electrode potentials?

1. Fe³⁺
2. I₂(s)
3. Cu²⁺
4. Ag⁺

Using the standard electrode potential, find out the pair between which redox reaction is not feasible.

${\mathrm{E}}^{⊝}<mspace\; width="1em"></mspace>\mathrm{values}:<mspace\; width="1em"></mspace>{\mathrm{Fe}}^{3+}/{\mathrm{Fe}}^{2+}=+0.77;<mspace\; width="1em"></mspace>{\mathrm{I}}_2/{\mathrm{I}}^{-}=+0.54;$
${\mathrm{Cu}}^{2+}/\mathrm{Cu}=+0.34;<mspace\; width="1em"></mspace>{\mathrm{Ag}}^{+}/\mathrm{Ag}=+0.80<mspace\; width="1em"></mspace>\mathrm{V}$

1. Fe³⁺ and I^-

2. Ag⁺ and Cu

3. Fe³⁺ and Cu

4. Ag and Fe³⁺