What is the chemical name for BrO₃⁻?

The chemical name for BrO₃⁻ is bromate. This is correct because bromate is the ion derived from bromic acid (HBrO₃) and contains the bromine atom in a +5 oxidation state, combined with three oxygen atoms.

In naming oxyanions, the conventions used can help clarify why "bromate" is the appropriate name. The suffix "-ate" is used for oxyanions that have a higher number of oxygen atoms compared to those that have fewer, which typically take the "-ite" suffix. Therefore, in the family of bromine oxyanions, bromate (BrO₃⁻) has more oxygen atoms than bromite (BrO₂⁻), leading to the nomenclature distinction.

In contrast, other naming options such as hypobromate and perbromate refer to different oxyanions: hypobromate (BrO⁻) has one less oxygen than bromate, while perbromate (BrO₄⁻) has one more. This distinction in naming based on the number of oxygen atoms confirms that the appropriate name for BrO₃⁻, which conforms to the standard chemical nomenclature rules, is