1. Lewis Dot Notes

2. Lewis Dot Diagrams Illustrates the number of valence electrons – Valence electrons = Number of electrons in outer shell – Placed around the symbol of the element Helps us determine how compounds are formed / how elements bond

3. Periodic Table Tips Same with the Bohr Model – You don’t need the number of shells / periods – The group # gives you the number of valence electrons

4. Drawing Valence Electrons How many valence electrons does Fluorine have? – 7 Start at 12:00 with your first dot F

5. Drawing Valence Electrons Continued Add dots at 3:00, 6:00, and 9:00 moving clockwise until you reach the correct number of valence electrons. FFF

6. Drawing Valence Electrons Continued You need one dot at each location before you start adding your second dots FFF

8. Lewis Dot Diagram Practice Draw the Lewis Dot Diagram for Phosphorus – Phosphorus – Symbol: P – Atomic Number: 15 – Atomic Mass: 31 – Protons: 15 – Neutrons: 31-15 = 16 – Electrons: 15 – Valance Electrons: _______ P

9. Lewis Dot Diagram Practice Draw the Lewis Dot Diagram for Phosphorus – Phosphorus – Symbol: P – Atomic Number: 15 – Atomic Mass: 31 – Protons: 15 – Neutrons: 31-15 = 16 – Electrons: 15 – Valance Electrons: 5 P