Science
Dipole-dipole.
Definition
Dipole-dipole interactions are intermolecular forces that occur between polar molecules. The partially positive end of one molecule is attracted to the partially negative end of another, affecting physical properties like boiling point and solubility.
Examples
Real-world.
- 1 HCl molecules attract each other through dipole-dipole forces because chlorine is more electronegative than hydrogen
- 2 Acetone has a higher boiling point than similar-sized nonpolar molecules due to dipole-dipole interactions
- 3 SO₂ molecules experience dipole-dipole attractions due to the bent molecular shape creating a net dipole
Key Fact
Dipole-dipole forces are stronger than London dispersion forces but weaker than hydrogen bonds.