11-16-07%20-%20Lecture%2015%20-%20Chapter%203

11-16-07%20-%20Lecture%2015%20-%20Chapter%203 - valence...

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Molecular Orbital Theory Molecular Orbital Theory 1. No. of MO’s = no. of atomic orbitals used. 2. Bonding MO is lower in energy than atomic orbitals. Antibonding MO is higher. 3. Electrons occupy MO’s in the order of from lowest to highest energy.
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Heteronuclear Diatomic Molecules
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Molecular Orbitals and Color
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MO Theory of Metals & MO Theory of Metals & Semiconductors Semiconductors Band Theory-
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Unformatted text preview: valence electrons donated by atoms are spread over the entire structure. Al Metal and MOs Al Metal and MOs 2000 MOs 2000 MOs Use 1000 Al atoms and get 4000 MOs Have 3000 e- or 1500 pairs This fills the bottom levels 3/4 of the way. Electrical Conductivity Electrical Conductivity Conduction band Filled levels + e-Empty levels Add energy Valence band Band Structure...
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This note was uploaded on 10/24/2009 for the course CHEM 234234234 taught by Professor Johnson during the Fall '08 term at UCSD.

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11-16-07%20-%20Lecture%2015%20-%20Chapter%203 - valence...

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