valency

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va·lence

, valency (vā'lĕns, -len-sē),
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); for example, in HCl, chlorine is monovalent; in H2O, oxygen is bivalent; in NH3, nitrogen is trivalent.
[L. valentia, strength]

valency

(vā′lən-sē)
n.
Variant of valence.

valency

See valence.

va·lence

, valency (vā'lĕns, -ē)
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]

valency

combining power of an atom, determined by number of electrons in its outer shell

valency (vāˑ·len·sē),

n the number of chemical bonds that an atom of a particular element can form, used as a measure of the chemical reactivity of that element.

va·lence

, valency (vā'lĕns, -sē)
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).
[L. valentia, strength]

valency, valence

1. the numerical measure of the capacity to combine; in chemistry, an expression of the number of atoms of hydrogen (or its equivalent) that one atom of a chemical element can hold in combination, if negative, or displace in a reaction, if positive.
2. in immunology, an expression of the number of antigenic determinants with which one molecule of a given antibody can combine.
References in periodicals archive ?
Both valencies and secondary features of base verbs may be relevant to the realization or interpretation of deverbal nouns.
In valencies these can combine to designate a particular functor, so that, as we have seen, the agentive intransitive in Bill is working might be characterized as {src{abs}}, i.
But although it is true that left dislocation requires a suitable pronoun, I do not think that this condition can replace our assumption that unmarked left dislocation necessarily involves specification of variables that come from verbal valencies.
The placement of the comparative-source phrase enables both partitive-takers to satisfy their valencies with a nominal to their right.
ChemSketch also automatically checks the chemistry of the structure while it is being drawn, and displays the appropriate charge and indicates any incorrect valencies.
But David does not explore its potential, nor does she integrate its rapidly shifting valencies (the presence of the colony in the form of wealth is good, but its savagery in the form of British greed is bad; dangerous natives become good babus, white Englishmen become enemies) into her argument about the making of British identity in the nineteenth century.
8) showed that rubber-to-metal bonding achieved by the brass plating process was due to chemical valencies linking the brass to the rubber through a mixed copper sulfide compound.