What is Intermolecular force?
In [[physics]], [[chemistry]], and [[biology]], '''intermolecular forces''' are forces that act between stable [[molecule]]s or between functional groups of [[macromolecule]]s. These forces are generally much weaker than the [[chemical bond]]ing forces. Their bonding energies are less than a few kcal/mol. But they are responsible for many different physical, chemical, and biological phenomena. In general one distinguishes short and long range intermolecular forces. (The molecule is a substance are held together by the forces acting between the molecules which are called inter-molecular forces) == Hydrogen bonding == {{main|Hydrogen bond}} Hydrogen bonding is an intermolecular interaction with a [[hydrogen]] [[atom]] being present in the intermolecular bond. [[Image:Hydrogen-bonding-in-water-2D.svg|200px]] == Related pages == * [[Chemical bond]] * [[Ionic bond]] ==Other websites== ===Software for calculation of intermolecular forces === *[http://www.q-pharm.com Quantum 3.2] {{Webarchive|url=https://web.archive.org/web/20170914125245/http://q-pharm.com/ |date=2017-09-14 }} *[http://www.physics.udel.edu/~szalewic/SAPT/ SAPT]: An ab initio quantumchemical package. {{chem-stub}} {{Chemical bonds}} [[Category:Chemistry]]