(©2002, François G. Amar, All rights reserved)

Summary for Week 12

Reading:

A look ahead: Chemistry of Vision

Quiz on Friday, November 22

Homework problems:

Chapter 9: 9.2, 9.9, 9.11, 9.13, 9.16, 9.19, 9.25, 9.29, 9.32, 9.34

9.39, 9.41, 9.42, 9.45, 9.47, 9.51, 9.69

Key Concepts and Equations

Molecular shapes (Chapter 9)

triangles, tetrahedrons, and other shapes

      
	VSEPR model
      
	electron pairs and repulsion
	nonbonding pairs and multiple bonds
      
	expanded valence shells (3rd row nonmetals  like P, S, Cl)
      
	more than one "central" atom   --->  organic chemistry!
      
	bond polarity and molecular dipole moment
      
	orbital overlap in covalent bonding of diatomics
      
	hybridization (electron promotion and orbital mixing)
      
	multiple bonds
      
	molecular orbitals for diatomics (bond order)