octet theory of valence

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• 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

• Valence bond theory — In chemistry, valence bond theory explains the nature of a chemical bond in a molecule in terms of atomic valencies. [Murrel, JN, Kettle, SF Tedder, JM The Chemical Bond , John Wiley Sons (1985) ISBN 0 471 90759 6] Valence bond theory summarizes… …   Wikipedia

• Octet — may refer to: Music Octet (music), ensemble consisting of eight instruments or voices, or composition written for such an ensemble Octet (Beethoven), 1793 composition by Ludwig van Beethoven Octet (Mendelssohn), 1825 composition by Felix… …   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

• Méthode de la liaison de valence — Théorie de la liaison de valence En chimie, la théorie de la liaison de valence explique la nature de la liaison chimique dans une molécule en termes de valences[1]. La théorie de la liaison de valence se base sur la tendance qu un atome central… …   Wikipédia en Français

• Theorie de la liaison de valence — Théorie de la liaison de valence En chimie, la théorie de la liaison de valence explique la nature de la liaison chimique dans une molécule en termes de valences[1]. La théorie de la liaison de valence se base sur la tendance qu un atome central… …   Wikipédia en Français

• Théorie de la liaison de valence — En chimie, la théorie de la liaison de valence explique la nature de la liaison chimique dans une molécule en termes de valences[1]. La théorie de la liaison de valence se base sur la tendance qu un atome central dans une molécule est susceptible …   Wikipédia en Français

• History of the periodic table — The history of the periodic table reflects over a century of growth in the understanding of chemical properties, and culminates with the publication of the first actual periodic table by Dmitri Mendeleev in 1869.[1] While Mendeleev built upon… …   Wikipedia

• periodic law — /pear ee od ik, pear /, Chem. 1. the law that the properties of the elements are periodic functions of their atomic numbers. 2. Also called Mendeleev s law. (originally) the statement that the chemical and physical properties of the elements… …   Universalium

• History of the molecule — In chemistry, the history of the molecule traces the origins of the concept or idea of the existence of strong chemical bonds between two or more atoms. The modern concept of molecules can be traced back towards pre scientific Greek philosophers… …   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