Final answer:
The oxidation number of each type of atom in HBrO is +1 for hydrogen, +1 for bromine, and -2 for oxygen.
Step-by-step explanation:
The oxidation number of each type of atom in HBrO can be determined using the rules for assigning oxidation numbers. In H₂O, the hydrogen atoms each have an oxidation number of +1, while the oxygen atom has an oxidation number of -2. By applying the same rules, in HBrO, the hydrogen atom would have an oxidation number of +1, the bromine atom would have an oxidation number of +1, and the oxygen atom would have an oxidation number of -2.