Definitions for van der waals force
van der waal·s force

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1. van der Waals forcenoun

   The relatively weak attraction between neutral atoms and molecules arising from polarization induced in each particle by the presence of other particles.

2. Etymology: from Johannes Diderik van der Waals who first described them

WikipediaRate this definition:0.0 / 0 votes

1. Van der Waals force

   In molecular physics, the van der Waals force is a distance-dependent interaction between atoms or molecules. Unlike ionic or covalent bonds, these attractions do not result from a chemical electronic bond; they are comparatively weak and therefore more susceptible to disturbance. The van der Waals force quickly vanishes at longer distances between interacting molecules. Named after Dutch physicist Johannes Diderik van der Waals, the van der Waals force plays a fundamental role in fields as diverse as supramolecular chemistry, structural biology, polymer science, nanotechnology, surface science, and condensed matter physics. It also underlies many properties of organic compounds and molecular solids, including their solubility in polar and non-polar media. If no other force is present, the distance between atoms at which the force becomes repulsive rather than attractive as the atoms approach one another is called the van der Waals contact distance; this phenomenon results from the mutual repulsion between the atoms' electron clouds.The van der Waals forces are usually described as a combination of the London dispersion forces between "instantaneously induced dipoles", Debye forces between permanent dipoles and induced dipoles, and the Keesom force between permanent molecular dipoles whose rotational orientations are dynamically averaged over time.

WikidataRate this definition:0.0 / 0 votes

1. Van der Waals force

   In physical chemistry, the van der Waals force, named after Dutch scientist Johannes Diderik van der Waals, is the sum of the attractive or repulsive forces between molecules other than those due to covalent bonds, the hydrogen bonds, or the electrostatic interaction of ions with one another or with neutral molecules or charged molecules. The term includes: ⁕force between two permanent dipoles ⁕force between a permanent dipole and a corresponding induced dipole ⁕force between two instantaneously induced dipoles. It is also sometimes used loosely as a synonym for the totality of intermolecular forces. Van der Waals forces are relatively weak compared to covalent bonds, but play a fundamental role in fields as diverse as supramolecular chemistry, structural biology, polymer science, nanotechnology, surface science, and condensed matter physics. Van der Waals forces define many properties of organic compounds, including their solubility in polar and non-polar media. In low molecular weight alcohols, the hydrogen-bonding properties of the polar hydroxyl group dominate the weaker van der Waals interactions. In higher molecular weight alcohols, the properties of the nonpolar hydrocarbon chain dominate and define the solubility. Van der Waals forces quickly vanish at longer distances between interacting molecules.

How to pronounce van der waals force?

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Numerology

1. Chaldean Numerology

   The numerical value of van der waals force in Chaldean Numerology is: 8

2. Pythagorean Numerology

   The numerical value of van der waals force in Pythagorean Numerology is: 5

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Van_Der_Waals_Force
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Van_Der_Waals_Force
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=van der waals force