Look up: valence

1. Valence
   In chemistry, valence is a number that represents the combining power of an element or radical.
   Found on http://fas.org/news/reference/probert/AD
   
   
2. valence
   [n] - (biology) a relative capacity to unite or react or interact as with antigens or a biological substrate 2. [n] - (chemistry) a property of atoms or radicals
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. valence
   the tendency of elements to form compounds through a shift of electronic structure.
   Found on http://www.workover.co.uk/og/u.htm
   
   
4. valence
   the tendency of elements to form compounds through a shift of electronic structure.
   Found on http://www.workover.co.uk/og/v.htm
   
   
5. Valence
   The charge on an ion based on the number of electrons transferred or shared within a specific structure.ExampleH₂O, oxygen has a valence of 2carbon in CH₄ has a valence of four.
   Found on http://www.diracdelta.co.uk/science/sour
   
   
6. valence
   The maximum number of univalent atoms (originally hydrogen or chlorine atoms) that may combine with an atom of the element under consideration, or with a fragment, or for which an atom of this element can be substituted.
   Found on http://www.chem.qmul.ac.uk/iupac/gtpoc/T
   
   
7. valence
   The number of hydrogen atoms that typically bond to an atom of an element. For example, in H₂O, oxygen has a valence of 2; carbon in CH₄ has a valence of four.
   Found on http://antoine.frostburg.edu/chem/senese
   
   
8. valence
   A positive number that characterizes the combining power of an element for other elements, as measured by the number of bonds to other atoms that one atom of the given element forms upon chemical combination: hydrogen is assigned valence 1, and the valence is the number of hydrogen atoms, or their equivalent, with which an atom of the given element…
   Found on http://www.bacgroup.com/glossary/glossar
   
   
9. Valence
   The combining capacity of an atom expressed as the number of single bonds the atom can form or the number of electrons an element gives up or accepts when reacting to form a compound.
   Found on http://www.mpoweruk.com/glossary.htm
   
   
10. valence
    an energy band,occurring in the spectrum of a solid cristal,in which lie the energies of the valence electrons that bind the crystal together Category: Automation (includes telecommunications and computers) • permitted band occupied by the valence electrons Category: Chemistry • an electron with energy within the valence band Category: Chemistry • energy value e…
    Found on http://www.mijnwoordenboek.nl/definition
    
    
11. Valence
    Va"lence noun [ From Latin valens , - entis , present participle of valere to have power, to be strong. See Valiant .] (Chemistry) The degree of combining power of an atom (or radical) as shown by the number of atoms of hydrogen (or of other monads, as chlorine, sodium, etc.) with which it will combine, or for which it can be substituted, or with which it can be com …
    Found on http://www.encyclo.co.uk/webster/V/3
    
    
12. valence
    <biochemistry> The number of binding sites on a molecule. ... <chemistry> A number which reflects an element's ability to combine with other elements ... <immunology> The number of antigen binding sites an antibody has, or the number of antigenic determinants an antigen has ... (09 Oct 1997) ...
    Found on http://cancerweb.ncl.ac.uk/cgi-bin/omd?v
    
    
13. Valence
    `Valence` in molecules, atoms, or subatomic particles: * valence in chemistry * valence bond theory in chemistry * valence shell in chemistry * valence band in physics * valence quarks in particle physics `Valence` in other sciences: * valence in linguistics, * Valence (psychology) (and neuroscience) refers to the emotional value associated with a stimulus; e.g., a familiar face can have positive valence. * Valence effect is another page on t...
    Found on http://en.wikipedia.org/wiki/Valence
    
    
14. Valence
    `Valence` in molecules, atoms, or subatomic particles: * valence in chemistry * valence bond theory in chemistry * valence shell in chemistry * valence band in physics * valence quarks in particle physics `Valence` in other sciences: * valence in linguistics, * Valence (psychology) (and neuroscience) refers to the emotional value associated with a stimulus; e.g., a familiar face can have positive valence. * Valence effect is another page on t...
    Found on http://en.wikipedia.org/wiki/Valence
    
    
15. valence
    (va´lens) a positive number that represents the combining power of an element in a chemical compound (the number of bonds each atom of that element makes with other atoms in the compound). In this sense, “valence” has been superseded by the concept “oxidation number.” However, “valence̶...
    Found on http://www.mercksource.com/pp/us/cns/cns
    
    
16. Valence
    • (n.) The degree of combining power of an atom (or radical) as shown by the number of atoms of hydrogen (or of other monads, as chlorine, sodium, etc.) with which it will combine, or for which it can be substituted, or with which it can be compared; thus, an atom of hydrogen is a monad, and has a valence of one; the atoms of oxygen, nitrogen,...
    Found on http://thinkexist.com/dictionary/meaning
    
    
17. Valence
    town, capital of Drôme département, Rhône-Alpes région, southeastern France. Valence lies on the left bank of the Rhône River. Built on a succession ...
    Found on http://www.britannica.com/eb/a-z/v/3
    
    
18. valence
    in chemistry, the property of an element that determines the number of other atoms with which an atom of the element can combine. Introduced in 1868, ... [11 related articles]
    Found on http://www.britannica.com/eb/a-z/v/3
    
    
19. valence
    valence, valency In chemistry, the capacity of an atom or group of atoms to combine in specific proportions with other atoms or groups of atoms.
    Found on http://www.wordinfo.info/words/index/inf
    
    
20. valence
    The combining power of one atom of an element (or a radical), that of the hydrogen atom being the unit of comparison, determined by the number of electrons in the outer shell of the atom (v. electrons); e.g., in HCl, chlorine is monovalent; in H2O, oxygen is bivalent; in NH3, nitrogen is trivalent. [L. valentia, strength]
    Found on
    
    
21. valence
    A measure of the combining power of a particular element. Valence (also called valency) is equal to the number of individual chemical bonds that one atom can form. The valence of an atom is determined by the number of electrons in the outermost (valence) shell (see valence electron). The valence of ...
    Found on http://www.daviddarling.info/encyclopedi