week 5 notes - 3 sp 2 sp dsp 3 d 2 sp 3 That is describe...

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Weekly Lecture Schedule CHEM 14A Instructor: Dr. Laurence Lavelle WINTER 2001 WEEK 5 Molecular Shape and Structure Read: Ch 3.1 to 3.12 Do Problems: 1, 3, 5, 9, 11, 13, 15, 17, 19, 21, 23, 27, 29, 31, 33, 37 After going through the readings & problems and attending the lectures & discussion groups, you should be able to: Explain why lone pairs are more likely to be found in certain locations around a central atom and how and why they affect the bond angles in a molecule (V alence-S hell E lectron-P air R epulsion (VSEPR) Model). Use VSEPR to determine the shape of a molecule, and use bond dipole moments determine its polarity. Distinguish sigma and pi bonds by their shapes, properties, and component orbitals. Explain how hybridization arises from atomic orbitals. Know the types of hybridization and some of the molecules in which these occur: sp
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Unformatted text preview: 3 , sp 2 , sp, dsp 3 , d 2 sp 3 . That is, describe the structure of a molecule in terms of hybrid orbitals and sigma and pi bonds. • Describe how atomic orbitals combine to form molecular orbitals. • Describe the molecular orbitals for homonuclear diatomic molecules and heteronuclear diatomic molecules. • Know how to calculate bond order using a molecular orbital energy-level diagram. • Distinguish between diamagnetism and paramagnetism using the molecular orbital model. • With respect to electron transitions that give rise to a UV or visible absorption spectrum: understand the difference between e- transitions in atomic orbitals (atomic spectroscopy) and e- transitions in molecular orbitals (molecular spectroscopy, HOMO → LUMO)....
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