2. # of valence electrons = 1 P: 3 N: 4 - - - P+: 3 e-: 3 N: 4 Let’s do together:

3. # of valence electrons = 2 P: 4 N: 5 - - - P+: 4 e-: 4 N: 5 - Let’s do together:

4.  Boron  Carbon  Nitrogen  Oxygen  Fluorine  Neon  Bonus: Sodium  Boron  Carbon  Nitrogen  Oxygen  Fluorine  Neon  Bonus: Sodium Now, on your own, draw the following and list the number of valence electrons Valence electrons are the electrons in the outermost energy level of the atoms of an element.

5. # of valence electrons = 2 P: 4 N: 5 - - - P+: 4 e-: 4 N: 5 - This is the outermost energy level These are the electrons in the outermost energy level Valence electrons are the electrons in the outermost energy level of the atoms of an element. You should be drawing: Boron Carbon Nitrogen Oxygen Fluorine NeonBonus: Sodium

6. Lets See how you did…

7. # of valence electrons = 3 P: 5 N: 6 - - - P+: 5 e-: 5 N: 6 - -

8. # of valence electrons = 4 P: 6 N: 6 - - - P+: 6 e-: 6 N: 6 - - -

9. # of valence electrons = 5 P: 7 N: 7 - - - P+: 7 e-: 7 N: 7 - - - -

10. # of valence electrons = 6 P: 8 N: 8 - - - P+: 8 e-: 8 N: 8 - - - --

11. # of valence electrons = 7 P: 9 N: 10 - - - P+: 9 e-: 9 N: 10 - - - -- -

12. # of valence electrons = 8 Note: This energy level is full P: 10 N: 10 - - - P+: 10 e-: 10 N: 10 - - - -- - -