Chemistry / Unit 8 Chem 1376 short lesson, about 20 seconds
Dipole-Dipole Attraction
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The idea
A dipole-dipole attraction is the electrostatic pull between the positive end of one polar molecule and the negative end of a neighbor.
In practice
HCl and F2 share nearly identical molar mass, but polar HCl is liquid where nonpolar F2 stays gaseous.
Where people slip
Dipole-dipole attraction layers on top of dispersion forces, never replacing them — every polar molecule keeps its dispersion forces too.
Your place on the trail
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