1. How to Draw Lewis Structures

2. Lewis Structures 1)Find your element on the periodic table. 2)Determine the number of valence electrons. 3)This is how many electrons you will draw.

3. Lewis Structures Find out which group (column) your element is in. This will tell you the number of valence electrons your element has. Lewis dot structures are drawn showing only the valence electrons showing only the valence electrons.

4. Groups - Review Each column is called a “group” Each element in a group has the same number of electrons in their outer orbital, also known as “shells”. Except for He, it has 2 electrons The electrons in the outer shell are called “valence electrons”

5. Lewis Structures 1)Write the element symbol. 2)Carbon is in the 4 th group, so it has 4 valence electrons. 3)Starting at the right, draw 4 electrons, or dots, counter- clockwise around the element symbol.

6. Lewis Structures 1)Electrons will be placed around the element symbol going counter clockwise. 2)1 st two together in the s orbital. 3) 3 rd 4 th 5 th by themselves in p orbitals 4)6 th, 7 th and 8 th pair up in the open p orbital. 2 2 8 8 1 1 3 3 4 4 7 7 5 5 6 6 S orbital P x orbital P z orbital P y orbital

7. Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Br f)Al

8. Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Br f)Al

9. Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Br f)Al

10. Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Br f)Al

11. Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Br f)Al

12. Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Br f)Al

13. Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Br f)Al