The oxidation state of iodine in IO₃^- is: A)0 B)+3 C)-3 D)+5 E)-5

Question

Quizplus · Accepted Answer

In the given compound, there are two oxygen atoms with an oxidation state of -2 each, totaling -4. The sulfur atom has an oxidation state of +6, and the phosphorus atom has an oxidation state of -3. 
Thus, the sum of oxidation states in the compound is -4 + (+6) + (-3) = -1. Since the compound is neutral, the sum of oxidation states must equal zero. Therefore, the oxidation state of iodine (represented by IO in the compound) must be +5 (D) to balance out the overall charge.

The Oxidation State of Iodine in IO3- Is

The Oxidation State of Iodine in IO₃^- Is