Lec-21-Chap-09-3 - CHE 131 Lecture 21, 3/10/2006 Lecture...

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CHE 131 Lecture 21, 3/10/2006 1 Lecture 21 Molecular Polarity (9.5) Intermolecular Forces I (9.6) London Forces, Dipole-Dipole Interactions Benjamin S. Hsiao Department of Chemistry Stony Brook University Lecture 21, Knowledge and Skills • More about MO • Know what a dipole moment is • Know the range of dipole moment sizes for molecules • Know how polar molecules interact with each other or with external electric fields • Determine whether a molecule has a dipole moment or not • Know about induced dipole moments • Estimate the influence of molecular polarity on physical properties sp 3 d Hybrid Orbitals (Trigonal Bipyramidal) sp 3 d 2 Hybrid Orbitals (Octahedral)
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CHE 131 Lecture 21, 3/10/2006 2 Formation of σ Bonds in Trigonal Bipyramidal Molecules For example: As(C 6 H 5 ) 5 For example: PCl 5 generic orbital, may represent an s orbital or any hybrid orbital As 5 σ Bonds Bonds with the greatest electron density on a line connecting the atomic nuclei s-s type p-p type s-p type s-sp 3 type s-sp 2 type
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This note was uploaded on 09/04/2009 for the course CHE 81914-01 taught by Professor Prof.benjaminhsiao during the Spring '06 term at SUNY Stony Brook.

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Lec-21-Chap-09-3 - CHE 131 Lecture 21, 3/10/2006 Lecture...

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