CM-UY 1004 Lecture Notes - Lecture 16: Valence Bond Theory, Atomic Orbital, Lewis Acids And Bases
8 Nov 2017
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Document Summary
Predicting molecular geometry: draw lewis structure for molecule, count number of lone pairs on central atom and number of atoms bonded to the central, use vespr to predict geometry of the molecule atom. If center of + charge and center of - charge are the same then there"s no net charge. Remember: least electronegative atom goes in the middle. Bond is polar when there"s a difference in electronegativity between the 2 atoms. Overall polarity depends on the molecular geometry. Which of the following molecules have dipole moment? h 2 o, co 2 , so 2 , ch 4. A molecule can have polar bonds but no dipole moment. Ch 12 intermolecular forces and liquids and solids. Lewis theory cant write one correct structure for many molecules with resonance. Lewis theory doesn"t predict correct magnetic behavior of molecules. Hybridization: mixing 2+ orbitals to form a new set of hybrid orbitals from original atomic orbital.
