Ch3(4-8)Sep10Fa08a

Ch3(4-8)Sep10Fa08a - CHEM 109 General Chemistry University...

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CHEM 109 General Chemistry University of Nebraska FALL 2008 Wednesday 10 September 2008 ANNOUNCEMENTS: SuperJam: Monday: 6:00 – 7:15 Henz 124 Dr. Kautz Tuesday: Hamilton Rm. 110 Dr. Hartung 6-7:15 & Dr. Powers 7:30-8:45
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Guidelines for Ionic Formulas and Names 1. The cation – anion ratio of charges must give a net charge of _____ . 2. Cation: always listed before the anion. 3. Cation name: is the element name. 4. Anion name: always ends in –ide . (oxide, nitride, phosphide, etc)
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Metallic Binary Compounds – compounds containing a nonmetal and a metal (with a ________ charge) (Ionic Compounds are Formula Units) An __________ is the attraction between positive and negative ions. In order to form an ionic bond, the sum of the positive charges must equal the sum of the negative charges __________________. The formula of an ionic compound represents the ratio of ions in a compound. Naming Ionic Compounds (Type I)
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Whereas many metals form monatomic cations, only six nonmetallic elements commonly form anions. Some metals form cations with variable charges.
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Metallic Binary Compounds – compounds containing a nonmetal and a metal (with a ________ charge). When an atom can form ions (usually cations) with more than one possible charge, you must state the charge of the ion. For example, copper forms compounds with Cu + and Cu 2+ . To indicate the charge in the name, a _______ _______ is added in parentheses.
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This note was uploaded on 09/22/2009 for the course CHEM 109 taught by Professor Hart during the Spring '09 term at Nebraska Christian.

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Ch3(4-8)Sep10Fa08a - CHEM 109 General Chemistry University...

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