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Www.middleschoolscience.com 2008 Periodic Table How to Draw Lewis Structures www.middleschoolscience.com 2008.

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Presentation on theme: "Www.middleschoolscience.com 2008 Periodic Table How to Draw Lewis Structures www.middleschoolscience.com 2008."— Presentation transcript:

1 www.middleschoolscience.com 2008
Periodic Table How to Draw Lewis Structures 2008

2 Lewis Structures Find your element on the periodic table.
Determine the number of valence electrons. 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. You will only draw the valence electrons.

4 Groups - Review Group 8 = 8 electrons Group 1 = 1 electron
Except for He, it has 2 electrons Group 2 = 2 electrons Each column is called a “group” 3, 4, 5, 6, 7 Each element in a group has the same number of electrons in their outer orbital, also known as “shells”. The electrons in the outer shell are called “valence electrons”

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

6 C Lewis Structures Check your work.
Using your periodic table, check that Carbon is in the 4th group. You should have 4 total electrons, or dots, drawn in for Carbon. C

7 C Lewis Structures On your worksheet, try these elements on your own:
P Ca Ar Cl Al C

8 H Lewis Structures On your worksheet, try these elements on your own:
P Ca Ar Cl Al H

9 P Lewis Structures On your worksheet, try these elements on your own:
Ca Ar Cl Al P

10 Ca Lewis Structures On your worksheet, try these elements on your own:
P Ca Ar Cl Al Ca

11 Ar Lewis Structures On your worksheet, try these elements on your own:
P Ca Ar Cl Al Ar

12 Cl Lewis Structures On your worksheet, try these elements on your own:
P Ca Ar Cl Al Cl

13 Al Lewis Structures On your worksheet, try these elements on your own:
P Ca Ar Cl Al Al

14 End of Study Guide. Complete the Lewis Structure Worksheet You should know how to draw Lewis Structures for the first 20 elements.

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