Lec-17-Chap-09-1P

Lec-17-Chap-09-1P - Lecture 17 Using Molecular Models 9.1...

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1 Lecture 17 Using Molecular Models 9.1 Predicting Molecular Shapes: VSEPR 9.2 Lecture 17, Knowledge and Skills • Be aware of some of the limitations of molecular models • Predict the structures of simple molecules using the VSEPR model • Know the basic geometries of the arrangement of electron pairs about central atoms • Estimate the relative spatial demands of different types of electron pairs lone pairs, bonding pairs, single bonds, multiple bonds, bonds involving elements of different electronegativity p.390a Determine and represent the structure of a (simple) molecule Molecular structure (trigonal pyramidal) Model of molecular structure N H H H VSEPR, Valence Shell Electron Pair Repulsion Electrons in molecules are organized in pairs. Types of electron pairs: Bonding electron pairs (BP) Single or combined into multiple bonds Lone electron pairs (LP) Electron pairs repel each other. They move away from each other as far as possible. The electron pairs emanating from a central atom point towards the corners of regular
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This note was uploaded on 11/14/2010 for the course CHE 131 taught by Professor Kerber during the Spring '08 term at SUNY Stony Brook.

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Lec-17-Chap-09-1P - Lecture 17 Using Molecular Models 9.1...

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