1. Lewis Dot Diagram (a.k.a. Electron Dot Diagram)

2. Lewis Dot Diagram is… Asimplified way to draw valence electrons electrons for an element. What What are valence electrons? Electrons Electrons that are farthest farthest away from the nucleus. Electrons Electrons in the outside outside energy cloud.

3. Bohr Diagrams p+=3 n=4 p+=3 n=4 p+=1 n=0 p+=1 n=0 Lithium Hydrogen

4. How do you draw Lewis Dot Diagrams? Write the element symbol. Write the element symbol. Determine what family it is in. Determine what family it is in.Li Then…put dots around the symbol to represent the valence electrons. Then…put dots around the symbol to represent the valence electrons. NaNa

5. How many valence electrons? Look at the family (or column) it is in on the Periodic Table. Look at the family (or column) it is in on the Periodic Table. Family 1 has 1 electron Family 1 has 1 electron Family 2 has 2 electrons…etc. Family 2 has 2 electrons…etc. NaNa HHe LiBeBCNOFNe NaMgAlSiPSClAr KCaGaGeAsSeBrKr RbSrInSnSbTeIXe CsBaTlPbBiPoAtRn 1e- 2e-3e-4e-5e-6e-7e- 8e- or 2e-

6. Practice these: BNe