exercise 4 - Chemistry 312 Names: Exercise 4: Valence bond...

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Chemistry 312 Names: Exercise 4: Valence bond and molecular orbital theory 1. The tools of valence bond and molecular orbital theory – Using “ + “ and “ – “ to denote opposite phases of electronic wavefunctions, draw the four possible σ interactions of the 2s and 2 p z orbitals on two different neighboring atoms, were z is the internuclear axis. Clearly show the nodal planes in each interaction, and label them as “ g “ or “ u “, according to their symmetry with respect to inversion. Finally, order them according to increasing energy (what is the criterion for determining this?). You may ignore the spherical node in the 2s orbital.
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2. Valence bond theory – Draw an energy level diagram for O 2 that shows the 2s and 2p oxygen atomic orbitals on either side of the valence bonding orbitals of O 2 . Fill these orbitals with the correct number of valence electrons; the filled orbitals on each atom will translate to the molecule as non-bonding (filled) orbitals; assume that the 2p
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This note was uploaded on 01/19/2012 for the course CHEM 312 taught by Professor Staff during the Summer '08 term at University of Washington.

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exercise 4 - Chemistry 312 Names: Exercise 4: Valence bond...

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