Question

Wha tis the name of `HIO_3`?

Answer 1

`"Iodic acid........."`

Explanation:

`"Iodic acid"` has formula `HIO_3`, and iodine here has a formal `+V` oxidation state. Its salts are known as `"iodates."`

Answer 2

Iodic acid, or hydrogen iodate.

Explanation:

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):

`Cl^-` =chloride
`ClO^-` =hypochlorite (hypo means under)
`ClO_2^-` =chlorite
`ClO_3^-` =chlorate
`ClO_4^-` = (su)perchlorate (super means above)

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.