CHY 103 Lecture Notes - Lecture 10: Valence Bond Theory, Vsepr Theory, Supreme Headquarters Allied Powers Europe
6 Jun 2019
School
Department
Course
Professor
Document Summary
Chapter 10 chemical bonding ii: molecular shapes and valence bond theory. Examples molecules with more than one central atom. Lewis structures are great for determining number of bonding and nonbonding electrons in a molecule but they do not give any information about the actual shape of the molecule. In order to predict the shapes of molecules we use the valence shell electron pair repulsion. Helps predict shapes of most molecules from their lewis structures. It is based on the premise that electron pairs around an atom will repel each other and as a result will position themselves as far apart as possible from each other. Vsepr theory is applied to the central atom in a molecule. Some simple rules and examples to allow you to predict molecular geometry correctly. All valence-shell electron pairs around the central atom are counted equally regardless of whether they are bonding or nonbonding (lone) pairs.
