Answer:
HBr
Step-by-step explanation:
2HBr → H₂ + Br₂
Binary compound hydrogen bromide decompose to gives its constituent atoms hydrogen and bromine.
Binary compounds:
The compounds which are made up of the atoms of only two elements are called binary compounds.
For example:
The following compounds are binary:
HBr
H₂O
NH₃
HBr is binary because it is composed of only hydrogen and bromine. Ammonia is also binary compound because it is made up of only two elements nitrogen and hydrogen.
water is also binary because it is also made up of only two elements hydrogen and oxygen.