adj.
Having a valence of 2.
divalent
Dictionary:
di·va·lent (dī-vā'lənt)  |
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| Medical Dictionary: di·va·lent |
(dī-vā'lənt)
adj.
adj.
Bivalent.
di·va'lence or di·va'len·cy n.| Veterinary Dictionary: divalent |
1. bivalent.
2. carrying an electronic charge of two units.
| WordNet: divalent |
Note: click on a word meaning below to see its connections and related words.
The adjective has one meaning:
Meaning #1:
(chemistry) having a valence of two or having two valences
Synonym: bivalent
Pertains to noun: valence (meaning #2)
| Wikipedia: Divalent |
In chemistry, divalent anions are atoms or radicals with 2 additional electrons when compared to their elemental state (that is, with 2 more electrons than protons); for instance, S2- is the sulfide anion. Conversely, a cation is missing some electrons as compared with the neutral atom. Example: iron(II) or Fe2+ is the divalent cationic form of iron. The terminology arises because in solutions or arc discharges, cations are attracted to the cathode and anions to the anode.
Divalent cations are present in abundance in hard water; for example, [[Ca2+]] and [[Mg2+]]. These ionic minerals in solution are what contribute to the properties of water which cause it to be hard, such as the formation of scale.
See also
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[[pt:Ânions divalent
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 | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more |
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| Medical Dictionary. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Read more |
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| Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved. Read more |
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