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What is the oxidation state of carbon in carbon dioxide?

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answer is B.

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Detailed Solution

Let $x$ be the oxidation state of $C$ in ${CO}_{2}$ .

Since, the overall charge on the complex is 0 , the sum of oxidation states of all elements in it should be equal to 0 .

X+2(-2)=0

or, $x=+4$

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