Bismuthate

Bismuthate is an ion. Its chemical formula is BiO₃⁻. It has bismuth in its +5 oxidation state.

It is a very strong oxidizing agent. It reacts with hot water to make bismuth(III) oxide and oxygen. It also reacts with acids. Sodium bismuthate is the most common bismuthate. It is one of the few sodium compounds that does not dissolve in water.