name, noun ·Uncommon ·Advanced level
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"In this assignment you will analyze each of the following sentences and determine the valence of the highlighted verb."
"anger and fear have negative valence"
"A silicon crystal with a band gap in which an impurity level is created near the top of the valence band has hole conductivity."
The combining capacity of an atom, functional group, or radical determined by the number of atoms of hydrogen with which it will unite, or the number of electrons that it will gain, lose, or share when it combines with other atoms, etc.
Common synonyms include: valency, affective value, argument requirement, bonding capacity, constant, degree.
A silicon crystal with a band gap in which an impurity level is created near the top of the valence band has hole conductivity.
Pronounced /ˈveɪl(ə)ns/.
Etymology 1 sense 1.1 (“combining capacity of an atom”) and etymology 1 sense 3 (“one-dimensional value assigned by a person to an object, situation, or state”) are borrowed from German Valenz + English -ence (suffix meaning ‘having the condition or state of’). Valenz is a clipping of Quantivalenz (“(archaic) valence in chemistry”), from English quantivalence, from Latin quantus (“how much”) + English -i- (interfix inserted between morphemes of Latin origin for ease of pronunciation) + Latin valentia (“bodily strength; health; vigour”) (whence Late Middle English valence (“medicinal preparation made from plants”); ultimately from Proto-Indo-European *h₂welh₁- (“to rule; powerful, strong”)). Quantivalence was coined by F. O. Ward who communicated it to the German chemist August Wilhelm von Hofmann (1818–1892), leading him to coin the German word Quantivalenz. Doublet of value. Etymology 1 sense 2 (“number of arguments a verb can have”) was formed by analogy to the use of the word in chemistry: see above.
A variant of valance.
Borrowed from French Valence. Doublet of Valencia.