CHEM 110 Lecture Notes - Lecture 16: Lewis Structure
Document Summary
Chem110- lecture 16- lessons 8-1 to 8-4, part 2. Molecules w/o a single central atom (organic molec. ) Enzymes, antibodies, and receptors (all proteins) all depend on their shape. Shape and bonding: determine lewis structure, use vsepr to determine e- pair geometry, determine molecular geometry, determine molecular polarity, use molecular shape and bond polarity to answer this. Sharing e- isn"t always equal, we use en to estimate the bond polarity. Polar molecules have a negative end and a positive end. When partial charges are evenly distributed-- no polarity. When partial charges are unevenly distributed-- polar/semi-polar. Linear diatomics- is based on x. A molecule is polar if there"s a net charge separation between 2 ends of the molecule symmetry in 3d (has a - and + end) To have a net dipole, the molecule must have polar bonds and geometry where bond dipoles don"t cancel. Determining the polarity of a molecule with >2 atoms: Use vector analysis to find net molecular dipole.
