London dispersion forces

E347195

intermolecular force physical interaction van der Waals force

London dispersion forces are weak, short-range intermolecular attractions arising from temporary fluctuations in electron density that induce instantaneous dipoles between atoms or molecules.

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All labels observed (2)

Label	Occurrences
London dispersion forces canonical	2
van der Waals forces	1

Statements (48)

Predicate	Object
instanceOf	intermolecular force ⓘ physical interaction ⓘ van der Waals force ⓘ
actBetween	atoms ⓘ molecules ⓘ noble gas atoms ⓘ nonpolar molecules ⓘ
alsoKnownAs	London forces ⓘ dispersion forces ⓘ instantaneous dipole–induced dipole forces ⓘ
ariseFrom	induced dipoles ⓘ instantaneous dipoles ⓘ temporary fluctuations in electron density ⓘ
categoryOf	induced dipole interactions ⓘ
contributeTo	boiling points of substances ⓘ condensation of gases ⓘ liquefaction of noble gases ⓘ melting points of substances ⓘ solubility trends of nonpolar substances ⓘ surface tension of nonpolar liquids ⓘ viscosity of nonpolar liquids ⓘ
dependOn	intermolecular distance ⓘ molecular polarizability ⓘ number of electrons ⓘ size of electron cloud ⓘ
energyDependenceOnDistance	approximately proportional to 1/r^6 ⓘ
existEvenIn	nonpolar substances ⓘ
explains	existence of liquid and solid phases of noble gases ⓘ trend of boiling points in halogen series ⓘ
field	materials science ⓘ molecular physics ⓘ physical chemistry ⓘ
increaseWith	increasing molar mass ⓘ increasing surface area contact ⓘ
mathematicallyDescribedBy	attractive term in Lennard-Jones potential ⓘ
namedAfter	Fritz London ⓘ
presentIn	all atoms and molecules ⓘ
range	short-range ⓘ
relativeStrength	weak ⓘ
significantIn	interactions between hydrocarbon chains ⓘ large nonpolar organic molecules ⓘ molecular crystals of nonpolar substances ⓘ
strongerThan	gravitational forces between molecules ⓘ
temperatureEffect	disrupted by increasing thermal motion ⓘ
weakerThan	covalent bonds ⓘ hydrogen bonding ⓘ ionic bonds ⓘ ion–dipole interactions ⓘ

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Fritz London → notableFor → London dispersion forces ⓘ

Fritz → knownFor → London dispersion forces ⓘ

subject surface form: Fritz London

theory of London dispersion forces → componentOf → London dispersion forces ⓘ

this entity surface form: van der Waals forces