\(\mathrm{FeO}_{4}^{2-} \xrightarrow{+2.0 \mathrm{~V}} \mathrm{Fe}^{3+} \xrightarrow{0.8 \mathrm{~V}} \mathrm{Fe}^{2+} \xrightarrow{-0.5 \mathrm{~V}} \mathrm{Fe}^{0}\)
In the above diagram, the standard electrode potentials are given in volts (over the arrow). The value of \(\mathrm{E}_{\mathrm{FeO}_{4}^{-2-} / \mathrm{Fe}^{2+}}^{\Theta}\) is
1
1.7 V
2
1.2 V
3
2.1 V
4
1.4 V