HBr overview
The H–Br bond contains two electrons. Six more remain as three lone pairs on bromine, giving both atoms their expected valence shells.
How to draw HBr
- Count 8 valence electrons.
- Draw one H–Br single bond.
- Add three lone pairs to bromine.
- Verify a hydrogen duet, bromine octet and zero formal charges.
Molecule and aqueous acid
HBr is hydrogen bromide as a molecular compound. In water it is commonly discussed as hydrobromic acid, where ionization and solvation must be considered.
Common mistakes
- Adding electrons around hydrogen.
- Using an H=Br double bond.
- Leaving off bromine lone pairs.
- Confusing the molecule with Br⁻ alone.
Related guides
Last reviewed: July 16, 2026. Educational reference only.