1. Electron Dot Structure or Lewis Dot Structures

2. Valence Electrons
Valence electrons are the electrons in the highest occupied energy level of the atom.
Valence electrons are the only electrons generally involved in bond formation.
The valence electrons in the s and p orbitals are written around the element symbol.
These electrons are then used to determine the number of bonds formed in making a molecule.

3. Electron Dot Structure or Lewis Dot Diagram (Gilbert Lewis)
A notation showing the valence electrons surrounding the atomic symbol.

4. Oxygen and Chlorine Atoms

5. Elements within the same group have the same electron-dot structure.

6. Lewis Dot Structure Examples
Draw the Lewis Dot Structure for O2

7. Lewis Dot Structure Examples
Draw the Lewis Dot Structure for N2

8. Lewis Dot Structure Examples
Draw the Lewis Dot Structure for CO2

9. Lewis Dot Structure Examples
Draw the Lewis Dot Structure for NH3

10. Lewis Dot Structure Examples
Draw the Lewis Dot Structure for CH4

11. Lewis Dot Structure Examples
Draw the Lewis Dot Structure for H2O2