anion

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anion

anion , atom or group of atoms carrying a negative charge. The charge results because there are more electrons than protons in the anion. Anions can be formed from nonmetals by reduction (see oxidation and reduction ) or from neutral acids (see acids and bases ) or polar compounds by ionization. Anionic species include Cl ^- , SO ₄^-- , and CH ₃ COO ^- . Highly colored intermediates in organic reactions are often radical anions (anions containing an unpaired electron). Salts are made up of anions and cations . See ion .

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anion

A Dictionary of Food and Nutrition | 2005 | | Â© A Dictionary of Food and Nutrition 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

anion A negatively charged ion.

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DAVID A. BENDER. "anion." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. 10 Nov. 2009 <http://www.encyclopedia.com>.

DAVID A. BENDER. "anion." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. (November 10, 2009). http://www.encyclopedia.com/doc/1O39-anion.html

DAVID A. BENDER. "anion." A Dictionary of Food and Nutrition. 2005. Retrieved November 10, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O39-anion.html

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World Encyclopedia | 2005 | Â© World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

anion Negative ion attracted to the anode (positive electrode) during electrolysis.

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