";s:4:"text";s:1829:"The forces come into play when the molecules are very close to each other.
However, London dispersion forces are generally stronger between easily polarized molecules and weaker between molecules that are not easily polarized. Covalent compounds all have London dispersion (LD) forces, whereas polar covalent compounds have dipole forces and/or hydrogen-bonding forces. The London dispersion force is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles. Temporary dipoles can occur in non-polar molecules when the electrons that constantly orbit the nucleus occupy a similar location by chance.
Dispersion forces occur between all atoms and molecules, regardless of whether they are polar or nonpolar. The more electrons a molecule has, the stronger the London dispersion forces are.
These exist between all types of molecules, whether ionic or covalent—polar or nonpolar. CO2 is nonpolar … London dispersion forces are weak intermolecular forces and are considered van der Waals forces. London forces are the attractive forces that cause nonpolar substances to condense to liquids and to freeze into solids when the temperature is lowered … It is the only type of intermolecular force that exists between noble gases and nonpolar molecules. All molecules, whether they are polar or nonpolar, have London Dispersion forces. This force is sometimes called an induced dipole-induced dipole attraction.
London dispersion forces The weakest intermolecular forces of all are called London dispersion forces.