CHEM 10052 Lecture Notes - Lecture 8: Intermolecular Force, London Dispersion Force, Electromagnetism

• School: Kent State University
• Department: Chemistry
• Course: CHEM 10052
• Professor: Pritha Subramanian

Document Summary

Intramolecular forces are strong attractive forces between atoms or between ions. Intramolecular forces are what we call chemical bonds: covalent between neutral non-metal atoms. Ionic between ions: metallic between neutral metal atoms. Intermolecular forces are weak attractive forces between molecules or between molecules and ions. I like to abbreviate intermolecular forces and im forces: my nickname: sticky forces since these are the forces that stick molecules together to form liquids and solids. Intra- vs. inter: all of these forces ultimately derive from the electromagnetic interaction, distinguishing between them is largely a matter of strength. Types of intermolecular forces: four main types. London forces: dipole-dipole type sticky forces are about 10x stronger than london forces, although any bond between atoms with different electronegativity values will be. Id donor/acceptor: aqueous solubility of organic compounds. Intermolecular forces determine whether molecular substances can dissolve in water: quick solution vocabulary, solvent: that which does the dissolving, retains its phase.