| Valence (valence) |
|---|
| n. | (?) |
|---|
| Va"lence |
| [From L. valens, -
entis, p. pr. of valere to have power, to be strong. See
Valiant.] (Chem.) |
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.
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In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 