What is the oxidation number of iodine in IO3?

Understand the Problem

The question is asking for the oxidation number of iodine (I) in the iodate ion (IO3). To find the oxidation number, we can use the known oxidation states of oxygen and the overall charge of the ion.

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 represents the charge an atom would have if the compound was composed of ions.

Tips

Ensure the sum of oxidation numbers in a neutral molecule or ion equals the overall charge of that molecule or ion.

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