111109a - Resonance Resonance Resonance Take Away Message...

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Paramagnetism y Paramagnetic- has at least one unpaired electrons, will be attracted to a magnetic field y Diamagnetic- has no unpaired electrons, will not be attracted to a magnetic field
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MO Diagram 2s A 2s B σ 2s σ * 2s 2p x 2p y 2p z 2p x 2p y 2p z π 2p π 2p σ 2p σ * 2p π * 2p π * 2p
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MO Diagram 2s A 2s B σ 2s σ * 2s 2p x 2p y 2p z 2p x 2p y 2p z π 2p π 2p σ 2p σ * 2p π * 2p π * 2p
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MO Diagram 2s A 2s B σ 2s σ * 2s 2p x 2p y 2p z 2p x 2p y 2p z π 2p π 2p σ 2p σ * 2p π * 2p π * 2p
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MO Diagram
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Will NO - be attracted to a magnetic field? Yes No 28% 72% 1. Yes 2. No
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Combining Two Models y Localized Electron Model – only have electrons in specific places y Delocalized Electron Model – electrons found all over the entire molecule
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Unformatted text preview: Resonance Resonance Resonance Take Away Message From Chapter 9 y We need a new description of bonding that is more appropriate than Lewis structures and our normal atomic orbitals. y We use hybrid orbitals to get the observed shapes. y We use molecular orbitals to explain magnetism and the delocalization of electrons. Chapters 10 and 11 y We will only cover the following sections from chapters 10 and 11: { 10.1 { 10.8 { 10.9 { 11.1 { 11.4 { 11.5 { 11.6 { 11.7...
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This note was uploaded on 10/23/2010 for the course CHEM 105A taught by Professor Bau during the Fall '04 term at USC.

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111109a - Resonance Resonance Resonance Take Away Message...

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