Wha tis the name of #HIO_3#?
Iodic acid, or hydrogen iodate.
The halogens have a lot of different oxidation states. Chlorine is the worst. The most common is called -ate, the one with one O less is called -ite (same goes for sulfate-sulfite nitrate-nitrite).
Since the halogens also form halides, the series goes (I take chlorine as an example):
Most of these also have an iodine version.
All of these are oxidators, they themselves being reduced to elemental form or even to the -ide form.