Chapter_7 Oct_08 Lecture_21.pptx

# Octahedron will be located on opposite sides of the

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octahedron will be located on opposite sides of the central atom, making the shape of ICl 4 - square planar. Worked Example E.D. geometry: trigonal planar Shape: trigonal planar E.D. geometry: octahedral Shape: square planar

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Bond angles deviation due to e- repulsions Some electron domains are better than others at repelling neighboring domains Lone pairs take up more space than bonded pairs of e - - Bonded pairs are restricted between atoms Multiple bonds repel more strongly than single bonds - Multiple bonds have higher e - density, more e - repulsions Lone pair-lone pair repulsion < Lone pair-bonding pair repulsion < Bonding pair-bonding pair repulsion
Deviation from Ideal Bond Angles Trigonal planar Tetrahedral Trigonal bipyramidal Octahedral

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Geometry of Molecules with Multiple Central Atoms What happen if there is more than one central atoms? - Look at each central atom separately
Geometry of Molecules with Multiple Central Atoms Look at each central atom separately (No lone pair on the central atom) (2 lone pairs on the central atom)

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Molecular geometry Worked Example tetrahedral tetrahedral trigonal planar trigonal planar tetrahedral bent
Worked Example Solution The electron-domain geometry of the leftmost C is tetrahedral.
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• Fall '16
• hawk
• Atom, Molecule, trigonal bipyramidal, Molecular Geometry and Polarity

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