ch09 bonding orbitals pt 2 - mo theory for posting_1

ch09 bonding orbitals pt 2 - mo theory for posting_1 - If...

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If you tried to register for chem 104 or 106 and got a message indicating you need a prerequisite, which of the following applies to you? (only answer if you were told by SIMS that you need a pre-requisite) 1.I really don’t have the pre-req: I will not have passed math 125 or 150, or the equivalent, by spring 2011 2.I actually have the pre-req: I am taking math 125 now or have previously passed it 3.I actually have the pre-req: I have AP credit which exempts me from math 125 4.I actually have the pre-req: I have transfer credit for math 125 or math 150 on my transcript
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2 Please get your iclicker out. Do not cheat. One point is not worth the risk.
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Molecular Orbitals An alternate model to describe  bonding. Electrons are responding to all the  nuclear charges in molecule.   Atomic orbitals are not preserved.
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Consider what orbitals you would expect for CH 4 in the localized electron model What you do find for occupied orbitals: Localized electron model fails
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Molecular Orbital Model Electrons respond to all nuclei in molecule Molecular orbitals can be calculated with good accuracy for moderately sized molecules using computational methods that approximate We will be looking at orbitals that are calculated that way, and thinking about how they arise from the original atomic orbitals Focus will be on diatomics Larger molecules get much more complicated.
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 Bonding in H 2 Overlap of 1s  atomic orbitals  can happen two  ways: out of phase in phase
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+ + + -
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ch09 bonding orbitals pt 2 - mo theory for posting_1 - If...

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