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valence Definition

va·lence (vā′ləns)

noun

  1. the capacity of an element or radical to combine with another to form molecules, as measured by the number of hydrogen or chlorine atoms which one radical or one atom of the element will combine with or replace (e.g.: oxygen has a valence of two, i.e., one atom of oxygen combines with two hydrogen atoms to form the water molecule, HO)
  2. any of the units of valence which a particular element may have

Etymology: LL valentia, worth, capacity < L, vigor < valens, prp. of valere, to be strong: see value

Also valency va′·lency
Valence Definition

Va·lence (vȧ läns′)

city in SE France: pop. 63,000
valence Usage Examples

Converse of object

  • have: Most metals have positive valences i.e. during a reaction, they tend to give away electrons to the substances they react with.

Adjective modifier

  • rear: The boot was also subject to paint removal and it was at this point that the rear valence was clamped into position.
  • negative: As I read your material I believe you have a strong " negative valence " to your overall message today.
  • positive: Most metals have positive valences i.e. during a reaction, they tend to give away electrons to the substances they react with.
  • front: The hood liner was removed as was the front valence and mud flaps - these would get torn off pretty quickly anyway.
  • affective: After studying words of positive, neutral, and negative affective valences, subjects produced free associations to various cues.
  • different: Each shape represented either a metal or a non metal with different valences.

Modifies a noun

  • quark: But sum the mass of the valence quarks and you account for less than 1 % of the proton's mass.
  • electron: The ideal covalent bond where the valence electrons are shared equally is between identical atoms.
  • orbital: Thus the fragmentation mechanisms do not depend upon which of the valence orbitals has been ionized.
  • bond: My strongest interest is in the area of electronic structure theory, in particular the valence bond model.
  • shell: In this way, both atoms share the stability of a full valence shell.
  • band: The energy band above the valence band is " forbidden " in energy terms.