What is the oxidation number of iodine in IO3-?
Understand the Problem
The question is asking about the oxidation state of iodine (I) in the ion IO3-. To solve this, we will use the rules for assigning oxidation numbers, considering the charge of the ion and the oxidation states of the other elements present.
Answer
+5
The oxidation number of iodine in IO3- is +5
Answer for screen readers
The oxidation number of iodine in IO3- is +5
More Information
The oxidation number, or oxidation state, indicates the degree of oxidation of an atom in a chemical compound. In IO3-, iodine (I) has an oxidation number of +5.
Tips
A common mistake is to miscalculate by not accounting correctly for the charge on the ion or the oxidation state of oxygen.
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