... elements, the # of valence electrons is = to the element's group # in the periodic table. The transfer of one or more valence electrons between atoms produced positively and negatively charged ions, or cations and anions, respectively. Most common cations are produced by the loss of valence electrons from metal atoms. 15.2 Ionic Bonds The attraction between an anion and a cation is ... thus ionic compounds are electrically neutral. Ionic solids consist of positive & negative ions packed in an orderly arrangement. The coordination number of an ion indicates the number of ions of opposite c...

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