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 ?
It confirms that use of ecological scales for distribution of the CPU of types on fractions of valency will allow to allocate the limiting factors and to show an ecological variety of types.
In addition, recognizing the different clause patterns that verbs may enter also help them better understand and be aware of valency alternations (i.
Happen is represented as having the valency of an absolutive (or neutral) functor and a locative.
2 that, when a participant is introduced to a clause by affixing a final to a root or stem, it has primary object status and is cross-referenced on the verb, thereby either increasing the latter's morphological valency or rearranging its argument realization.
We have obtained additional information about the charge distribution around the atoms from the knowledge of their electronic density diagrams in order to correlate the cation valency and crystallographic results.
Most items aimed at capturing trait-constructs can thus be described in terms of a four-way interaction of the following dimensions (see Figure 1): point of reference (first person, possessive, others, indicator) x general item format (staticity, frequency, valency, frequency + valency) x construct indicator (attributal, behavioral, mental, contextual) x conditionality (unconditional, conditional).
The independent variable was the valency (negative or neutral) of the pairs of pictures exposed, and the dependent variable was the marked preference for one of the two pictures, measured as a "hit rate" in relation to the target exposed.
Valency, (2008), 'The Construct Validity of Schein's Career Anchors Orientation Inventory', Career Development International, 13(1), pp.
Surprisingly, it binds to all three valency states of cobalamin and mechanism of methionine synthase inhibition appears to be similar to that of [N.
Old age needs more differentiating than it receives here for what it means for men and for women: has sexual desire and its relation to women and the menopause (which is discussed) a different valency from any equivalent for men?
In Part II, "Dictionaries," the opening chapter "Le informazioni sintattiche nel Devoto-Oli e in altri dizionari," by Marco Carmello and Carla Marello, discusses both the progress made in the compilation of syntactic information in modern Italian monolingual dictionaries and the difficulties related to the presentation of such information, particularly in the case of verb valency.
I wish to argue that this exhibit had a double valency, seemingly exceptional and foreign and yet also entirely at home in its modern colonial context.