In which of the following compounds is the ox | vedclass

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(B) The oxidation state of an element in a compound is calculated based on the total charge of the molecule.For $IF_7$,$x + 7(-1) = 0 \implies x = +7$

Vedclass · Accepted Answer

${I_3}^-$

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(B) The oxidation state of an element in a compound is calculated based on the total charge of the molecule.For $IF_7$,$x + 7(-1) = 0 \implies x = +7$.For ${I_3}^-$,the average oxidation state is calculated as $3x = -1 \implies x = -1/3$.For $IF_5$,$x + 5(-1) = 0 \implies x = +5$.For $IF_3$,$x + 3(-1) = 0 \implies x = +3$.Since the oxidation state of iodine in ${I_3}^-$ is $-1/3$,which is a fraction,the correct option is $B$.

In which of the following compounds is the oxidation state of iodine fractional?

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