PPT Slide

21

• Types of intermolecular forces: ion-dipole, dipole -dipole,  hydrogen bonding, dipole-induced dipole, and dispersion forces.

Ion-Dipole Forces

• Electrostatic attraction between an ion and a nearby polar molecule  (dipole) produces  an ion-dipole force.

• Ionic compounds dissolve in water due to attractions between the  ions and the oppositely charged poles of the H 2O molecules.

Dipole-Dipole Forces

• When polar molecules lie near one another, as in liquids and  solids, their partial charges orient them and give rise to  dipole-dipole forces:

• Higher dipole-dipole forces can lead to higher boiling points in  polar molecules.

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