Chemistry · Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions

In which of the following compounds, the oxidation number of iodine is fractiona

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

  • A. \( I F_{7} \)
  • B. \( I_{3}^{-} \)
  • C. \( I F_{5} \)
  • D. \( I F_{3} \)

Step-by-step solution

In I3-, the average oxidation number of iodine is -1/3 because the total charge is -1 and there are three iodine atoms. In the other compounds, iodine has integer oxidation states: +7 in IF7, +5 in IF5, +3 in IF3.
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