What are the oxidation states of the iodine in #HIO_4# and #HIO_3# ?
Iodine has an oxidation number of +7 in
In both cases, iodine's oxidation number can be determined using
So, for the first compound
The sum of each individual atom's oxidation number must equal the molecule's overall charge. Since
So iodine has a +7 oxidation number in
The exact same technique applies for
Iodine's oxidation number is +5 in