hypervalent
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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 — hy|per|va|lẹnt [↑ hyper u. ↑ valent] nennt man Moleküle, deren Bindungsverhältnisse nicht mit den normalen Wertigkeiten der beteiligten Atome im Einklang sind, z. B. Polyiodide, IF5, IF7 u. a. Interhalogenverb., Edelgasverb. wie XeF4 oder XeF2… … Universal-Lexikon
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
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
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
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
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
Molécule hypervalente — Une molécule hypervalente désigne une espèce chimique dans laquelle un atome porte formellement plus de huit électrons dans sa couche de valence, brisant ainsi la règle de l octet. L ion triiodure I3 , le trifluorure de chlore ClF3, l ion… … Wikipédia en Français
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
Organoselenium chemistry — Organoselenium compounds are chemical compounds containing carbon to selenium chemical bonds. Organoselenium chemistry is the corresponding science exploring their properties and reactivity.[1][2][3][4] Selenium belongs with oxygen and sulfur to… … Wikipedia
