Readings

Covalent Bond and Lewis Dot Structures

• Reading the following sections for chapter Chapter 9:

  • 9.2 Covalent Bond

  • 9.3 Molecular Compounds

  • 9.5 Lewis Electron-Dot Structures

  • 9.6 Single Covalent Bonds

  • 9.7 Multiple Covalent Bonds

  • 9.8 Coordinate Covalent Bond

  • 9.9 Covalent Bonding in Polyatomic Ions

Videos

Lewis Diagrams Made Easy: How to Draw Lewis Dot Structures

Lewis diagrams (aka Lewis structures, Lewis dot structures, Lewis dot diagrams) are useful because they use simple drawings to show how atoms share valence electrons in molecules, polyatomic ions, and other covalent structures. 

Lewis Dot Structure Practice Problems

Practice drawing Lewis Structures with answers and explanation. The video covers the basic Lewis structures for a general chemistry class. The five steps are: 1. Find the total valence electrons for the molecule. 2. Put the least electronegative atom in the center. Note: Hydrogen (H) always goes outside. 3. Put two electrons between atoms to form a chemical bond. 4. Complete octets on outside atoms. 5. If central atom does not have an octet, move electrons from outer atoms to form double or triple bonds. 

Practice Problems

Lewis Structure Practice

Draw a Lewis Dot Structure for each molecule.