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valence

valence

9.5
The number of other molecules a biological molecule can bind to
  • noun
  • /ˈveɪləns/
  • Specialized
translation icon : valencia
  • The valence of an antigen determines how effectively it can interact with immune cells.
  • positive valence
  • valence electrons
  • valence band

Examples

  • Scientists study the valence of biomolecules to understand how they react with each other in the body.

  • Each substance has a unique valence that affects its ability to unite with other cells.

  • You're born with that specific valence value for each taste of sweet.

  • Of particular interest was their finding that the cognitive items that were most discriminating were those that had a positive valence.

    Academic text (1993)
  • And then the brain assigns a value of valence to it, a label, and says that's painful.

  • Each feedback statement was analyzed for its valence (positive, corrective, or neutral), precision (general or specific), and content.

    Academic text (2003)
  • Henle (1944) established that the greater the attractiveness (valence, as per the terminology of Lewin) of the substitute activity, the greater its effect.

    Academic text (1994)
  • Each atom is covalently bonded to each of its four nearest neighbors; that is, each silicon atom shares its four valence electrons with the four neighboring atoms, forming four covalent bonds.

    Academic text (1993)

Synonyms

valency
vsvalence
  • UK
9.8

The number of different molecules a biological molecule can react with or the number of antigens in a vaccine

focuses on reactive capacity rather than counting variety

Compounds

valence electron
  • Specialized
1 6.5

A tiny particle in the outer part of an atom that can join with other atoms

How Many

polyvalency
  • Specialized
9.9
tetravalent
  • Specialized
9.7
valence
  • Specialized
9.5
trivalent
  • Specialized
1 8.6
bivalence
  • Specialized
9.8

Surface Forms

valence singular
valences plural

Etymology

Valence comes from the Latin word valentia, from valere meaning 'to be strong', the same root you see in the English word value. In biology it means a molecule's 'ability to connect' or 'react' with others, so valence tells how well a substance can bind or interact.