10-10-11-Shapes-VSEPR - Molecular Shapes VSEPR Lynn A....

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10-10-11 1 Molecular Shapes VSEPR Lynn A. Melton University of Texas at Dallas October 10, 2011
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Definitions Molecular Mass – sum of the atomic masses of the atoms that make up the molecule. Formula Mass – sum of the atomic masses of the atoms that make up the ionic compound In either case, the units are amu . 10-10-11 2
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Molecular Mass Alanine 10-10-11 3 What is the molecular formula? Molecular mass?
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Molar Mass The molar mass is the mass in grams of one mole of a substance. Calculate the molecular (or formula) mass in amu, then change the units from amu to grams, and you have the molar mass. There is one mole of atomic mass units in one gram. 10-10-11 4
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Bonding, Shapes, and Models Lewis Theory Valence-Shell Electron Pair Repulsion Valence Bond Theory Hybridization Molecular Orbital Theory -- not addressed in this course -- Omit Section 7.6 10-10-11 5
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Bonding, Shapes, and Models Lewis Theory -- good for predictions of stability and bond order, easy to do, widely used by chemists. Not so good: does not predict 3D shapes, does not explain
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This note was uploaded on 10/15/2011 for the course MISC. 101 taught by Professor Multiple during the Spring '11 term at University of Texas at Dallas, Richardson.

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10-10-11-Shapes-VSEPR - Molecular Shapes VSEPR Lynn A....

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