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- valence bond theory
- The theory that describes covalent bonding in terms of the overlap of atomic orbitals on different atoms.
- valence electron
- Any of the electrons found in the highest occupied shell of electrons of the neutral atom.
- valence-shell electron-pair repulsion theory
- A means of predicting the structures of simple ions and molecules by a simple scheme for counting the number of pairs of electrons in the valence shell of the center atom.
- van der Waals equation
- An equation describing the behavior of gases and taking into account the effects of non-ideal behavior such as the non-negligible size of molecules of gas and forces of attraction between the molecules.
- van der Waals force
- Any of the attractive forces between polar or non-polar molecules; also used in the same sense as dispersion force.
- vapor
- The gaseous state of a substance that typically exists as a liquid or solid.
- vapor pressure
- The pressure exerted by the gaseous form of a substance above the liquid form.
- vaporization
- The formation of a vapor from a liquid; evaporation.
- viscosity
- The extent to which a liquid resists flow.
- voltaic cell
- An electrochemical cell in which a spontaneous reaction occurs. Such a cell can be used to generate electricity. Also called Galvanic cell.
- VSEPR theory
- Abbreviation for valence-shell electron-pair repulsion theory; a means of predicting the structures of simple ions and molecules by a simple scheme for counting the number of pairs of electrons in the valence shell of the center atom.
- vulcanization
- A process that adds substances to rubber in order to change its physical properties.
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