molecular+orbitals - Molecular Structure & Covalent...

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Unformatted text preview: Molecular Structure & Covalent Bonding Theories Principles of General Chemistry, 2 nd ed. By M. Silberberg Chemistry, 8th ed. by W. Whitten, R. Davis, R., M. L. Peck, and G. Stanley. in summary… # of electron groups = # of bonding electrons + # of lone pairs in counting: 1 single bond = 1 electron group 1 double bond = 1 electron group 1 triple bond = 1 electron group 1 lone pair = 1 electron group bent 2 trigonal pyramidal 1 sp 3 tetrahedral 109.5 ° tetrahedr al 4 bent 1 sp 2 trigonal planar 120 ° trigonal planar 3 sp linear 180 ° linear 2 hybridization of the central atom molecular group geometry no. of lone pairs angles electron group geometry no. of electron groups in summary… square planar 2 square pyramidal 1 sp 3 d 2 octahedral 90 ° , 180 ° octahedral 6 linear 3 T-shaped 2 see-saw 1 sp 3 d trigonal bipyramidal 90 ° , 120 ° , 180 ° trigonal bipyramidal 5 hybridizatio n of the central atom molecular group geometry no. of lone pairs angles electron group geometry no. of electron groups in summary… in summary… head on overlap = σ bond side on overlap = π bond 1 single bond = 1 σ bond 1 double bond = 1 σ bond and 1 π bond 1 triple bond = 1 σ bond and 2 π bonds Exercises Identify the (i) electronic group geometry, (ii) molecular group geometry and (iii) the hybridization of the central atom of the following compounds: (a) COCl 2 (b) PF 3 (c) SbF 5 (d) BrF 5 Answers C Cl O Cl P F F F F Sb F F F F Br F F F F F 8 Molecular Orbitals Principles of General Chemistry, 2 nd ed. By M. Silberberg Chemistry, 8th ed. by W. Whitten, R. Davis, R., M. L. Peck, and G. Stanley....
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This note was uploaded on 07/24/2011 for the course CHEM 16 taught by Professor Siao during the Spring '07 term at University of the Philippines Diliman.

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molecular+orbitals - Molecular Structure & Covalent...

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