1. Electron Dot Structure and the Periodic Table
H. Chemistry Mrs. Coyle

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.

3. Electron Configuration of Sodium
1s2 2s2 2p6 3s1
Which is the valence electron for Na?
Answer: 1s2 2s2 2p6 3s1

4. Na , 11 e

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

6. Oxygen Atom

7. Fluorine Atom - Chlorine Atom

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