chapter 10 outline

chapter 10 outline - December 6 2007 Chapter 10 Bonding and...

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December 6, 2007 Chapter 10- Bonding and Molecular Structure: Orbital Hybridization and Molecular Orbitals 1. Chapter Overview 1. Valance bond theory 1. Chemical bond arising from the overlap of atomic orbitals on different atoms 2. When they start to overlap, the potential energy goes down until a minimum is reached and then the energy goes back up again 1. Potential energy down first is b/c more electron density b/w two positively charged nuclei, decreasing the repulsion 2. When nuclei close the potential energy goes back up again 3. Distance b/w nuclei at the point of the minimum potential energy is the average bond length 2. Hybridization of atomic orbitals 1. Electron pair geometries associated with a particular hybridization of the orbitals on the central atom 2. We always wind up with the same number of hybrid orbitals as atomic orbitals that were mixed together 3. Two different types of covalent bonds 1. Sigma bonds- head to head overlap of two atomic orbitals 1. Region of increased electron density along the bond axis 2. Single bond 2.
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