hypervalent atom

См. также в других словарях:

• Hypervalent molecule — A hypervalent molecule is a molecule that contains one or more main group elements formally bearing more than eight electrons in their valence shells. Phosphorus pentachloride (PCl5), sulfur hexafluoride (SF6), the phosphate (PO43−) ion, chlorine …   Wikipedia

• hypervalent compound — noun any compound which contains more than eight formally assignable electrons in a valence shell directly associated with the central atom in direct bonding with a number of ligands …   Wiktionary

• chemical bonding — ▪ chemistry Introduction       any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another …   Universalium

• VALBOND — In molecular mechanics, VALBOND is a method for computing the angle bending energy that is based on valence bond theory. [Root, D. M.; Landis, C. R.; Cleveland, T. Valence Bond Concepts Applied to the Molecular Mechanics Description of Molecular… …   Wikipedia

• Octet rule — The bonding in carbon dioxide (CO2): all atoms are surrounded by 8 electrons, fulfilling the octet rule. The octet rule is a chemical rule of thumb that states that atoms of low (<20) atomic number tend to combine in such a way that they each… …   Wikipedia

• Periodinane — PIFA redirects here. For PIFA (Planar Inverted F Antenna), see Microstrip antenna. The Dess Martin Periodinane Periodinanes are chemical compounds containing hypervalent iodine. These iodine compounds are hypervalent because the iodine atom in it …   Wikipedia

• Chemical bond — A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electromagnetic force attraction between opposite charges, either between electrons and… …   Wikipedia

• organosulfur compound — ▪ chemical compound Introduction also spelled  organosulphur compound , also called  organic sulfur compound   a subclass of organic substances that contain sulfur and that are known for their varied occurrence and unusual properties. They are… …   Universalium

• 2-Iodoxybenzoic acid — Chembox new ImageFile = IBXAcid.png ImageSize = ImageFileL1 = 2 iodoxybenzoic acid 3D balls.png ImageFileR1 = 2 iodoxybenzoic acid 3D vdW.png IUPACName = OtherNames = IBX Section1 = Chembox Identifiers CASNo = 61717 82 6 PubChem = SMILES =… …   Wikipedia

• Lewis structure — The Lewis structure of water. Lewis structures (also known as Lewis dot diagrams, electron dot diagrams, and electron dot structures) are diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in …   Wikipedia

• Valence (chemistry) — For other uses, see Valence (disambiguation). In chemistry, valence, also known as valency or valence number, is a measure of the number of bonds formed by an atom of a given element. Valence can be defined as the number of valence bonds[1] a… …   Wikipedia