7_Chapt8_2 - Carbonyl chloride COCl2 1 of valence electrons...

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Mary Bojan Page 1 BLB Chapter 8 Part 2 Carbonyl chloride: COCl 2 1. # of valence electrons = 2. Connect atoms 3. distribute electrons
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Mary Bojan Page 2 BLB Chapter 8 Part 2 Deciding between alternate Lewis Structures Use FORMAL CHARGE (FC) : FC = VE LSE VE = number of valence electrons in an isolated atom LSE = number of electrons on the atom in the Lewis structure LSE = lone pair electrons + ½ shared electrons The most stable structure is the one in which the atoms bear the smallest formal charge. Example: COCl 2
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Mary Bojan Page 3 BLB Chapter 8 Part 2 NITRATE ION: NO 3 Valence electrons: Connect atoms, distribute electron pairs What does the Lewis structure indicate about bond lengths and strengths in NO 3 ?
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Mary Bojan Page 4 BLB Chapter 8 Part 2 RESONANCE STRUCTURES Some molecules can not be represented by a single Lewis structure. NO 3 3 resonance structures All 3 are proper and equal Lewis structures. Together
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This note was uploaded on 04/16/2009 for the course CHEM 110 taught by Professor Hofmann,brucerob during the Fall '08 term at Penn State.

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7_Chapt8_2 - Carbonyl chloride COCl2 1 of valence electrons...

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