1. Chemistry 141 Friday, November 17, 2017 Lecture 31
Chemistry 11 - Lecture 11
9/30/2009
Chemistry 141
Friday, November 17, 2017
Lecture 31
VSEPR and Hybridization

2. Questions for today: What are the 3-dimensional shapes of molecules?
Why do molecules have these shapes?
What is a covalent bond?
How can we understand molecular shapes in terms of orbitals?

3. Electron-Domain Geometries

4. Electron Domain and Molecular Geometries

5. Electron Domain and Molecular Geometries

6. Electron Domain and Molecular Geometries

7. Electron Domain and Molecular Geometries

8. Polarity of Molecules
A NONPOLAR molecule
A POLAR molecule

9. Orbital overlap and bonding

10. Hybrid orbitals
SN=4  tetrahedral (Example: CH4)

11. sp2 hybrid orbitals
SN=3  trigonal planar (Example: BCl3)

12. Hybrid orbitals for linear geometry
SN=2  linear (Example: BeCl2)

13. dsp3 hybrid orbitals
SN=5  trigonal bipyramidal
(Example: PCl5)

14. Hybrid orbitals and bonding for other SNs
SN=6  octahedral
(Example: SF6)

15. Hybridization summary