| − | An '''anion''' (pronounced with 3 syllables, as in "'''an''' eye on") is a negatively charged [[ion]]<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref>. It is the opposite of a [[cation]]. It is so named because, during [[electrolysis]], it migrates toward the [[anode]]. Anions are typically nonmetal ions. In a sodium chloride solution the Na<sup>+</sup> ions are cations and the Cl<sup>-</sup> ions are anions. | + | An '''anion''' (pronounced with 3 syllables, as in "'''an''' eye on") is a negatively charged [[ion]]<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref>. It is the opposite of a [[cation]]. It is so named because, during [[electrolysis]], it migrates toward the [[anode]]. Anions consist of [[electronegative|electronegativity]] nonmetals, especially oxygen, sulfur, and the [[halogens]], often in combination with other elements. In a sodium chloride solution the Na<sup>+</sup> ions are cations and the Cl<sup>-</sup> ions are anions. |