10-03-11-Naming-v2

10-03-11-Naming-v2 - Naming Compounds and Molecules Lynn A....

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10-03-11 1 Naming Compounds and Molecules Lynn A. Melton University of Texas at Dallas October 03, 2011
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Naming Compounds (Nomenclature) The goal is to be able to move flawlessly and quickly between the ionic formula/molecular formula and the systematic name /common name . You must both know the systematic rules and how to use them; memorize names and formulas when non- systematic names occur. 10-03-11 2
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Ionic Compounds Ionic compounds are electrically neutral. Make sure that the formula requires equal numbers of positive and negative charges. – Al 2 O 3 consists of 2 Al 3+ and 3 O 2- Shortcut: “Write a subscript for the cation that is numerically equal to the charge on the anion and a subscript for the anion that is numerically equal to the charge on the cation.” 10-03-11 3
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Most Group 1A, 2A, and 3A ions have positive charge [ cation ] equal to their group number.
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10-03-11-Naming-v2 - Naming Compounds and Molecules Lynn A....

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