1. Tardigrade
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  3. Chemistry
  4. In which of the following compounds, the oxidation number of iodine is fractional?

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

AMUAMU 2004

Solution:

Oxidation number of iodine in given species is as follows
O.N. of iodine in $IF _{3}=+3$
O.N. of iodine in $I _{3}=-\frac{1}{3}$
O.N. of iodine in $IF _{5}=+5$
O.N. of iodine in $IF _{7}=+7$
Therefore, oxidation number of iodine is fractional in $I _{3}^{-}$.