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单词 electrovalence
释义

electrovalencen.

Brit. /ᵻˌlɛktrəʊˈveɪləns/, /ᵻˌlɛktrəʊˈveɪln̩s/, U.S. /əˌlɛktrəˈveɪl(ə)ns/, /iˌlɛktrəˈveɪl(ə)ns/
Origin: Formed within English, by compounding. Etymons: electro- comb. form, -valence comb. form.
Etymology: < electro- comb. form + -valence comb. form.
Chemistry.
The property of forming chemical bonds by electrostatic attraction between positive and negative ions; the capacity of an element or ion to form such bonds; ionic bonding; (also) an electrovalent bond; = electrovalency n. Contrasted with covalence.
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the world > matter > chemistry > chemical bonding > [noun] > polar bonding > electrovalent or ionic bond
electrovalence1921
electrovalency1923
1921 I. Langmuir in Science 22 July 61/1 We shall see that the positive and negative valence differ from one another fundamentally only in algebraic sign, so that we shall find it convenient to include both positive and negative valence under the term electrovalence, which we may designate by the symbol ve.
1958 E. S. Gilreath Fund. Concepts Inorg. Chem. v. 227 Coordinated molecules may be partially or completely replaced by ions, resulting in a change in the electrovalence of the complex ion.
1962 H. N. Christensen Biol. Transport vi. 77 Hydrogen bonding and electrovalences may play a large part in the bonding of solutes to their transport sites.
2006 J. L. Jacobson Introd. Wine Lab. Pract. & Procedures i. 7 Electrovalence is the transferring of electrons to form a compound and the creation of ions that are electrically charged particles with properties totally different from the atom from which they came.
This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).
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n.1921
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