1. Chapter 5
Electron Dot Diagrams

2. Electron Dot Diagrams
Step 1: Write the electron configuration

3. The valence electrons are the electrons in the outer energy level.
Electron Dot Diagrams
Step 2: Determine the number of valence electrons.
The valence electrons are the electrons in the outer energy level.

4. Electron Dot Diagrams
Step 3: Write the symbol of the element surrounded by valence electrons. Place one electron on each side (top, bottom, right, left) before pairing them up.

5. Draw the electron dot diagram for oxygen.

6. Draw the electron dot diagram for germanium. (Z = 32)

7. Draw the electron dot diagram for selenium. (Z = 34)

8. Draw the electron dot diagram for chlorine. (Z = 17)

9. Draw the electron dot diagram for carbon. (Z = 6)

10. Draw the electron dot diagram for tellurium. (Z = 52)

11. Electron Dot Structures
Look at the Lewis Electron Dot Structures that we have drawn.

12. Electron Dot Structures

13. Electron Dot Structures

14. The Periodic Table.

15. The Periodic Table.

16. The Periodic Table.

17. Electron Dot Structures
The 2nd row of the periodic table and valence electrons.

18. Draw the electron dot diagram for hydrogen. (Z = 1)

19. HCl vs H2O
When hydrogen combines with chorine it does so in a 1:1 ratio.
When hydrogen combines with oxygen it does so in a 2:1 ratio.
Why?

20. Preview: Lewis Structures of moleules
Lewis structures of molecules will not be part of this chapter test but they illustrate a common use of electron dot diagrams.

21. When hydrogen combines with chorine it does so in a 1:1 ratio.

22. When hydrogen combines with oxygen it does so in a 2:1 ratio.

23. Homework (Due Tomorrow)
Worksheet: Orbital Filling Diagrams & Electron Dots.
Study Guide Chapter 5