lewis structure and vsepr review

lewis structure and vsepr review - Chemistry 3140: Advanced...

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Chemistry 3140: Advanced Inorganic Chemistry Geometries and Lewis Structures: Bonding Theory Version 1.0
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We’re in Chapter 2 at the moment, sections 2.1, 2.2 and 2.3. Everything here you should recall from Chemistry 1145 …
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Draw the Lewis Structure of: CHCl3 PF3 SO2 NO3-2 SF4
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Lewis Structures Center Atom Arrange outer atoms symmetrically Total valence electrons Pair between central and each outer atom Octet rule: outer Octet rule: center Too few electrons? Double or Triple bonds Too many electrons? Stick ‘em on the center atom.
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Resonance and Formal Charge If you do the Lewis Structure of phosgene, also known as “mustard gas”, you come up with this question: where to get the electrons in the double bond? Resonance says you write out all choices . .. but are they all equally good? O Cl Cl O Cl Cl O Cl Cl
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Resonance and Formal Charge Formal Charge is a simple idea, sort of a bookkeeping device for noticing where the electrons are in a molecule: FC = # val e’s – # unshared e’s – #bonds
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This note was uploaded on 05/31/2011 for the course CHEM 3341 taught by Professor Staff during the Spring '08 term at Georgia Southern University .

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lewis structure and vsepr review - Chemistry 3140: Advanced...

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