Chapter_7 Oct_05 Lecture_20.pptx

Can get multiple molecular geometries from a single

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Can get multiple molecular geometries from a single electron domain geometry ( depends on number of lone pairs ) Molecular Geometry Bent BCl 3 O 3 E.D. geometry Trigonal planar Molecular Geometry Shape Trigonal planar
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Molecular Geometry Bent Trigonal pyramidal Tetrahedral C Cl Cl Cl Cl CCl 4 NH 3 N H H H H 2 O O H H E.D. geometry tetrahedral Molecular Geometry Shape
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Molecular Geometry 5 positions are NOT equivalent Lone pairs go into equatorial positions - Less electron repulsion Two 90° neighbors Three 90° neighbors
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Molecular Geometry T-shaped Seesaw Linear E.D. geometry Trigonal bipyramidal Trigonal bipyramidal Molecular Geometry Shape
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Molecular Geometry 6 positions equivalent —1 st lone pair goes anywhere 2 nd lone pair goes opposite 1 st lone pair Keep lone pairs apart to minimize repulsion
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Molecular Geometry Square pyramidal Square planar T-shaped Linear Octahedral E.D. geometry: octahedral
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Number of electron domains Electron Domain Geometry /Shape Seesaw
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  • Fall '16
  • hawk
  • Atom, Molecule, Chemical bond, electron-domain geometry

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