MOLECULAR POLARITYFIELD NOTE 117 / 175
Is HBr polar or nonpolar?
HBr is polar because bromine pulls bonding electrons more strongly than hydrogen across their single bond.
Hydrogen Bromide · linear
The molecule in space
Drag to turn the molecule. A two-atom molecule has no bond angle.
01 / MODEL RECORDPubChem 3D coordinates. Atom sizes and bond thickness are illustrative.How model data is used ↗
Why HBr is polar
In hydrogen bromide, bromine (2.96) is more electronegative than hydrogen (2.20), pulling the shared electrons toward itself. This creates a partial negative charge on bromine (δ−) and partial positive on hydrogen (δ+).
What to notice
With only one H–Br bond, there is no second bond dipole to cancel it. The charge distribution is unequal across the two atoms.
Common questions about HBr
- 01
What does the Lewis structure of HBr show?
H and Br share one bond. Br has three lone pairs and H has none.
- 02
What is the molecular geometry of HBr?
HBr is a two-atom molecule, so its geometry is linear. A bond angle needs three atoms and is not defined here.
- 03
What is the molar mass of HBr?
HBr has an approximate molar mass of 80.91 g/mol, calculated from its formula using abridged standard atomic weights. Natural isotope variation can change the last digits.