Which of the following compounds cannot act a | vedclass

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(B) reducing agent is a substance that can donate electrons and undergo oxidation. In $KI$,the oxidation state of $I$ is $-1$,which can be oxidized to

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$HNO_3$

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(B) reducing agent is a substance that can donate electrons and undergo oxidation. In $KI$,the oxidation state of $I$ is $-1$,which can be oxidized to $I_2$ $(0)$. In $HNO_2$,the oxidation state of $N$ is $+3$,which can be oxidized to $+5$. In $H_2S$,the oxidation state of $S$ is $-2$,which can be oxidized to $S$ $(0)$. In $HNO_3$,the oxidation state of $N$ is $+5$,which is its maximum possible oxidation state. Since $N$ cannot be further oxidized,$HNO_3$ can only act as an oxidizing agent.

Which of the following compounds cannot act as a reducing agent?

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