In which of the following compounds, the oxidation number of iodine is fractional?

Question

Professor PC Thomas Classes · Answer

(c) : Oxidation number of iodine in the given species is as follows:\ Oxidation number of iodine in $\mathrm{IF}_3=+3$\ Oxidation number of iodine in $\mathrm{IF}_5=+5$\ Oxidation number of iodine in $\mathrm{I}_3^{-}=-\frac{1}{3}$\ Oxidation number of iodine in $\mathrm{IF}_7=+7$