Definition of valence in English:

valence

noun

Chemistry Linguistics
  • 1

    another term for valency
    • ‘Thus, the most obvious approach would be to use the Gouy-Chapman equation or its generalized formulation for electrolytes with mixed valences, the Grahame equation.’
    • ‘The valence of a unit is closely tied up with its dependence.’
    • ‘The difference in the valence of phosphorous and silicon provides the free electrons needed for metal-like behaviour.’
    • ‘These data can only be explained if one assumes that the affective valence of the prime is processed, even though this is not necessary for the task at hand.’
    • ‘In covalent compounds the valence of an atom may be less obvious.’
    • ‘Addition reactions of inorganic molecules occur when an atom has more than one valence.’
    • ‘One rather unsuccessful idea which he embarked on quite late in his career was to apply invariant theory to chemical valences.’
    1. 1.1as modifier Relating to or denoting electrons involved in or available for chemical bond formation.
      ‘molecules with unpaired valence electrons’
      • ‘These superconductors usually contain more oxygen atoms than predicted by valence theory.’
      • ‘Nonmetals with eight valence electrons are chemically unreactive.’
      • ‘The metalloids have an intermediate number of valence electrons.’
      • ‘Oxygen has six valence electrons.’
      • ‘The electrons in the highest energy level are called valence electrons.’

Origin

Late Middle English: from late Latin valentia ‘power, competence’, from valere ‘be well or strong’.

Pronunciation

valence

/ˈveɪl(ə)ns/