Unit 8 Molecular Geometry (Student Version).pdf - Molecular...

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Molecular Geometry Topics Covered Molecular shapes (VSEPR) Molecular polarity Orbital overlap Hybrid orbitals Molecular orbitals
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Molecular Geometry Lewis structures are drawn with all atoms in the same plane In reality, molecules have distinct 3D shapes that are determined by their bonding and nonbonding electrons
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Electron Domains • An electron domain is a region where electrons are most likely to be found Also called charge clouds In general, electron domains consist of nonbonding pairs (lone pairs), single bonds, and multiple bonds Because electron domains are negative, they repel each other
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VSEPR The best arrangement of a given number of electron domains is the one that minimizes the repulsion among them This is the main idea behind valence- shell electron-pair repulsion (VSEPR) theory
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Two Charge Clouds (linear)
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Three Charge Clouds (trigonal planar)
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Three Charge Clouds (bent)
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Four Charge Clouds
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Four Charge Clouds (tetrahedral)
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Four Charge Clouds (trigonal pyramidal)
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Four Charge Clouds (bent)
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Five Charge Clouds
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Five Charge Clouds (trigonal bipyramidal)
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Five Charge Clouds (seesaw)
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Five Charge Clouds (T- shaped)
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Five Charge Clouds (linear)
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Six Charge Clouds
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Six Charge Clouds (octahedral)
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Six Charge Clouds (square pyramidal)
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Six Charge Clouds (square planar)
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