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In chemistry, the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules. The concept of valence was developed in the second half of the 19th century and was successful in explaining the molecular structure of inorganic and organic compounds. <ref name = "Partington">{{#invoke:citation/CS1|citation |CitationClass=book }}</ref> The quest for the underlying causes of valence led to the modern theories of chemical bonding, including the cubical atom (1902), Lewis structures (1916), valence bond theory (1927), molecular orbitals (1928), valence shell electron pair repulsion theory (1958), and all of the advanced methods of quantum chemistry.


Valence (chemistry) sections
Intro  Description  Modern definitions  Historical development   Common valences    Valence versus oxidation state   \"Maximum number of bonds\" definition  Maximum valences of the elements   See also   References  

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Valence::atoms    Number::elements    Bonds::element    Valence::hydrogen    Which::hydrogen    State::chemical

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In chemistry, the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules. The concept of valence was developed in the second half of the 19th century and was successful in explaining the molecular structure of inorganic and organic compounds. <ref name = "Partington">{{#invoke:citation/CS1|citation |CitationClass=book }}</ref> The quest for the underlying causes of valence led to the modern theories of chemical bonding, including the cubical atom (1902), Lewis structures (1916), valence bond theory (1927), molecular orbitals (1928), valence shell electron pair repulsion theory (1958), and all of the advanced methods of quantum chemistry.


Valence (chemistry) sections
Intro  Description  Modern definitions  Historical development   Common valences    Valence versus oxidation state   \"Maximum number of bonds\" definition  Maximum valences of the elements   See also   References  

PREVIOUS: IntroNEXT: Description
<<>>