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Using the data given below
\[
\begin{array}{ll}
E_{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2} / \mathrm{Cr}^{3 *}}^{\ominus}=1.33 \mathrm{~V} & E_{\mathrm{Cl}_{2} / \mathrm{Cl}}^{\ominus}=1.36 \mathrm{~V} \\
\mathrm{E}_{\mathrm{MnO}_{4}^{-} / \mathrm{Mn}^{2 *}}^{\ominus}=1.51 \mathrm{~V} & \mathrm{E}_{\mathrm{Cr}^{3 *} / \mathrm{Cr}}^{\ominus}=-0.74 \mathrm{~V}
\end{array}
\]
P
W
find out the most stable oxidised species.
(i) \( \mathrm{Cr}^{3+} \)
(ii) \( \mathrm{MnO}_{4}^{-} \)
(iii) \( \quad \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-} \)
(iv) \( \mathrm{Mn}^{2+} \)
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