Which anion can undergo both oxidation and re | vedclass

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(C) An ion can undergo both oxidation and reduction if the central atom is in an intermediate oxidation state.In $OCl^-$,the oxidation state of $Cl$ i

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$OCl^{-}$

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(C) An ion can undergo both oxidation and reduction if the central atom is in an intermediate oxidation state.In $OCl^-$,the oxidation state of $Cl$ is $+1$.$Cl$ can be oxidized to a higher state (e.g.,$+3, +5, +7$) or reduced to a lower state (e.g.,$-1$ in $Cl^-$).In $Cr_2O_7^{2-}$,$Cr$ is in its maximum oxidation state of $+6$,so it can only be reduced.In $NO_3^-$,$N$ is in its maximum oxidation state of $+5$,so it can only be reduced.In $S^{2-}$,$S$ is in its minimum oxidation state of $-2$,so it can only be oxidized.

Which anion can undergo both oxidation and reduction?

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