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(A) substance can act as both an oxidizing and a reducing agent if the central atom is in an intermediate oxidation state.In $SO_2$,the oxidation stat

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$SO_2$

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(A) substance can act as both an oxidizing and a reducing agent if the central atom is in an intermediate oxidation state.In $SO_2$,the oxidation state of sulfur is $+4$.The maximum oxidation state of sulfur is $+6$ and the minimum is $-2$.Since $+4$ lies between $-2$ and $+6$,$SO_2$ can be oxidized to $+6$ (acting as a reducing agent) or reduced to lower oxidation states (acting as an oxidizing agent).Therefore,$SO_2$ acts as both an oxidizing and a reducing agent.

Which can act as an oxidizing as well as a reducing agent?

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