 |
valence
| Babylon English | Download this dictionary |
valence
n.
chemical parameter related to the external electric charge of an atom or compound which gives an indication of its combining capacity (Chemistry)
| English Wikipedia - The Free Encyclopedia | Download this dictionary |
Valence
Valence or valency may refer to:
Science
- Valence (psychology), the emotional value associated with a stimulus
- Valence (pharmacology), efficacy (of certain vaccines and antitoxins)
| See more at Wikipedia.org... |
© This article uses material from Wikipedia® and is licensed under the GNU Free Documentation License and under the Creative Commons Attribution-ShareAlike License
| WordNet 2.0 | Download this dictionary |
valence
Noun
1. (biology) a relative capacity to unite or react or interact as with antigens or a biological substrate
(synonym) valency
(hypernym) power, powerfulness
(attribute) univalent
(classification) biology, biological science
2. (chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent)
(synonym) valency
(hypernym) power, powerfulness
(hyponym) covalence, covalency
(attribute) monovalent, univalent
(classification) chemistry, chemical science
| Babylon French-English | Download this dictionary |
Valence
n.
Valence, city in France
valence
nf.
valence, chemical parameter related to the external electric charge of an atom or compound which gives an indication of its combining capacity (Chemistry)
| Webster's Revised Unabridged Dictionary (1913) | Download this dictionary |
Valence
(n.)
The degree of combining power of an atom (or radical) as shown by the number of atoms of hydrogen (or of other monads, as chlorine, sodium, etc.) with which it will combine, or for which it can be substituted, or with which it can be compared; thus, an atom of hydrogen is a monad, and has a valence of one; the atoms of oxygen, nitrogen, and carbon are respectively dyads, triads, and tetrads, and have a valence respectively of two, three, and four.
The degree of combining power of an atom (or radical) as shown by the number of atoms of hydrogen (or of other monads, as chlorine, sodium, etc.) with which it will combine, or for which it can be substituted, or with which it can be compared; thus, an atom of hydrogen is a monad, and has a valence of one; the atoms of oxygen, nitrogen, and carbon are respectively dyads, triads, and tetrads, and have a valence respectively of two, three, and four.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
