What is the chemical name for BrO−?

The chemical name for BrO− is indeed Hypobromate. This anion consists of a bromine atom bonded to one oxygen atom, and it carries a -1 charge. The naming is derived from the systematic nomenclature of oxyanions, which typically categorizes anions based on the number of oxygen atoms relative to a central element.

In the case of bromine, the naming convention follows a specific pattern:

• The lowest oxidation state of bromine with one oxygen is termed "hypobromate."
• As the oxidation state increases and more oxygen atoms are present, additional names are assigned - "bromite" for BrO2−, "bromate" for BrO3−, and "perbromate" for BrO4−.

Hypobromate is thus the correct name for the ion BrO−, reflecting its position as the simplest oxyanion of bromine with the least amount of oxygen.