5.111SC | Fall 2014 | Undergraduate

Principles of Chemical Science

Unit II: Chemical Bonding & Structure

Lecture 10: Introduction to Lewis Structures

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Image excerpted from Lecture 10 Notes 

  1. Lewis Structures
  2. Formal Charge
  3. Resonance Structures

Lecture Video

Lewis structures are simplistic views of molecular structure. They are based on the idea that the key to covalent bonding is electron sharing and having each atom achieve a noble gas electron configuration. Lewis structures correctly predict electron configurations around atoms in molecules about 90% of the time. They are not perfect, but writing a Lewis structure is a lot easier than solving the Schrödinger equation, so we recommend that you watch this lecture.

Lecture Notes

Notes for Lecture 10 (PDF)

Clicker Questions

Lecture 10 Clicker Questions (PDF)

Textbook Reading

Lewis Structures Section 2.5–2.8 Section 2.5–2.8

Problems and Solutions

Problems for Lecture 10 (PDF)

Solutions for Lecture 10 (PDF)

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Course Info

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Fall 2014
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