Answer:
HBrO
Step-by-step explanation:
Dibromine oxide (Br₂O) is an acidic oxide because it is formed by a nonmetal and oxygen, When an acidic oxide reacts with water it forms an oxoacid. Since Br has the oxidation number +1 in Br₂O, it forms the acid HBrO (hypobromous acid) with the same oxidation number. The reaction is:
Br₂O + H₂O → 2 HBrO