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Van der Waals forces, also known as van der Waals bonds or van der Waals interaction, are weak intermolecular interactions observed in condensed phases like solid and liquid. They are responsible for the bulk properties of substances, like the boiling and melting points.
The term ‘Van der Waals force’ is used to describe any dipole-dipole interactions in atoms/molecules. Since hydrogen bonds involve interactions between permanent dipoles, they can be considered as a type of Van der Waals force (and would fall under the category of Keesom Interactions).
Definition. Van der Waals forces include attraction and repulsions between atoms, molecules, as well as other intermolecular forces. They differ from covalent and ionic bonding in that they are caused by correlations in the fluctuating polarizations of nearby particles (a consequence of quantum dynamics [6]).
27 Σεπ 2024 · Van der Waals forces, relatively weak electric forces that attract neutral molecules to one another in gases, in liquefied and solidified gases, and in almost all organic liquids and solids. The forces are named for the Dutch physicist Johannes Diderik van der Waals, who in 1873 first postulated.
Van der Waals bonds refer to the weakest type of bonds between covalent molecules, such as in gases, liquids, and polymers. These bonds are responsible for holding molecules together loosely, allowing for rotational isomers and influencing the stiffness and strength of materials.
30 Ιαν 2023 · Van der Waals forces' is a general term used to define the attraction of intermolecular forces between molecules. There are two kinds of Van der Waals forces: weak London Dispersion Forces and stronger dipole-dipole forces.
27 Σεπ 2019 · Definition. Van der Waals forces are defined as: “A short-range repulsive or attractive intermolecular forces between atoms, molecules, and surfaces that exist in both gas and liquid phase”.
