u5lectout

u5lectout - Unit 5 Bonding and Inorganic Nomenclature Name...

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Unit 5: Bonding and Inorganic Nomenclature Name: _______________________ Chemical Bonding Ionic Bonds : atoms give up or gain e and are attracted to each other by coulombic attraction ionic compounds = salts where NO 3 1– is a polyatomic ion : Properties of Salts 1. very hard – 2. high melting points – 3. brittle – Covalent Bonds …atoms share e to get a full valence shell C F Lewis structure : 1. Two shared e make a single covalent bond, four make a double bond, etc. 2. unshared pairs : pairs of unbonded valence e 3. Each atom needs a full outer shell, i.e., 8 e . Exception: H needs 2 e carbon tetrafluoride (CF 4 ) methane (CH 4 ) 1
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2 nitrogen triiodide (N I 3 ) carbon dioxide (CO 2 ) covalent compounds = molecular compounds -- have lower melting points than do ionic compounds Metallic Bonds In metals, valence shells of atoms overlap, so v.e are free to travel between atoms through material. Properties of Metals
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This note was uploaded on 11/09/2011 for the course CHEM 110 taught by Professor Sullivan during the Fall '10 term at BYU.

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u5lectout - Unit 5 Bonding and Inorganic Nomenclature Name...

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