In: Chemistry
what is the difference in an ionic bond and ONLY a dispersion force bond?
IONIC BOND: All “ionic” bonds can be considered polar covalent, with varying degrees of ionic character.
It is an electrostatic attraction holding together positively charged metal cations and negatively charged nonmetal anions. eg. NaCl, AlCl3 etc
Dispersion force bond: The London dispersion force is the weakest intermolecular force. It is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles.
This force is sometimes called an induced dipole-induced dipole attraction. These are the attractive forces that cause nonpolar substances to condense to liquids and to freeze into solids when the temperature is lowered sufficiently. Because of the constant motion of the electrons, an atom or molecule can develop a temporary (instantaneous) dipole when its electrons are distributed unsymmetrically about the nucleus.
Dispersion forces are present between all molecules, whether they are polar or nonpolar.