University:
Loyola University Maryland
Course:
CH 101 | General Chemistry I
Academic year:

2024
Views:

173

Pages:

2
Author:

Natasya J.

Intermolecular Forces Intermolecular forces is the attraction between molecules. The strength of a molecules' intermolecular forcess can affect melting point and boiling point. London Dispersion Forces (LDF, "Big Molecule Force") A weak intermolecular force due to a temporary dipole that is induced by the uneven movement of electrons The bigger the molecule the stronger the attraction LDF are the only intermolecular forces that can be exhibited on non-polar molecules. Dipole-Dipole attraction is the attraction of polar molecules to each other due to partial opposite charges. Hydrogen Bonds is not a true intramolecular "bond". A very strong dipole-dipole attraction that occurs between hydrogen of one molecule and a very electronegative arom (ex. N. O. F) of another molecule. Relative strength of intermolecular forces for similiar sized molecules. LDF <<<<<<<<<<< Dipole-Dipole <<<<<<< Hydrogen Bonds Polar Molecules If molecule has : one type of atom it is non-polar two types of atoms and no-unshared pairs of electrons around the central atom, it is non polar. two types of atoms and has unshared pairs of electrons around the central atom, it is polar three types of atoms it is polar