8.2 How to Draw Lewis Dot Structures | Complete Guide | General Chemistry

Chad explains and demonstrates exactly how to draw Lewis Dot Structures in this lesson including numerous examples. The octet rule is introduced and explained followed by the three notable exceptions including expanded octets. How to easily calculate formal charge is also included as well as how to draw multiple resonance structures for certain molecules. It is also shown for molecules exhibiting resonance how to use formal charge to distinguish between individual resonance structures. The Lewis Dot Structures for a large number of molecules are worked out for students including CCl4, NF3, HCN, CO2, N2O, SF4, XeF4, SO4^2-, and NO3^-.

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00:00 Lesson Introduction
01:10 Valence Electrons & Lewis Symbols for Elements
03:44 Octet Rule
08:43 Exceptions to the Octet Rule
15:35 CCl4 Lewis Structure
22:01 NF3 Lewis Structure
24:20 HCN Lewis Structure
27:11 CO2 Lewis Structure
34:24 N2O Lewis Structure (Formal Charge)
42:56 SF4 Lewis Structure
46:14 XeF4 Lewis Structure
49:02 SO4^2- Lewis Structure
55:51 NO3^- Lewis Structure (Resonance)

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