CHEM 001 Lecture Notes - Lecture 15: Electron Shell, Lewis Structure, Stereochemistry
15 Aug 2020
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Notice odd number of valence e- and neutral molecule; think one unpaired e- i. e. radical. Reasoning flow (note you usually have to give only the final answer): ***insert from slide show*** Vsper theory provides a framework for molecular geometry predictions: check out vsper tutorial on website. Single and or multiple bonds lone pairs: based on the number of distinct (geometry determining) groups of electrons, + bonds (b) and lone pairs (e) determine the stereochemistry of the molecule. Diatomic molecules are either: non-polar if the two atoms are identical: h2, br2 etc, polar if they are different: hcl, co, etc. Polyatomic systems look at bond directions look at bond polarities: decide if the molecule or ion is polar or non-polar based on the geometry. A double bond is made of: one sigma bond; which are formed through the head-on-overlap of the c"s sp2 hybridized atomic orbital, one pi bond; which forms through the side overlap of nonhybridized p atomic orbitals.
