Which of the following can act both as an oxi | vedclass

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(D) substance can act as both an oxidizing agent $(O.A.)$ and a reducing agent $(R.A.)$ if the central atom is in an intermediate oxidation state,mean

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All of the above

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(D) substance can act as both an oxidizing agent $(O.A.)$ and a reducing agent $(R.A.)$ if the central atom is in an intermediate oxidation state,meaning it is between its maximum and minimum possible oxidation states.In $H_2O_2$,the oxidation state of oxygen is $-1$. Oxygen can be oxidized to $0$ (in $O_2$) or reduced to $-2$ (in $H_2O$).Similarly,$H_2$ (oxidation state $0$) can be oxidized to $+1$ or reduced to $-1$ (in metal hydrides).$I_2$ (oxidation state $0$) can be oxidized to higher states (e.g.,$+1, +5, +7$) or reduced to $-1$ (in $I^-$).Therefore,all the given substances can act as both oxidizing and reducing agents.

Which of the following can act both as an oxidizing and a reducing agent?

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