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**Periodic Table Study Guide**

How to Draw Lewis Structures 5th Grade Science Mrs. LaRosa 2008

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**Lewis Structures Find your element on the periodic table.**

Determine the number of valence electrons. This is how many electrons you will draw.

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**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.

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**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”

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**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

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**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

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**C Lewis Structures On your worksheet, try these elements on your own:**

P Ca Ar Cl Al C

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**H Lewis Structures On your worksheet, try these elements on your own:**

P Ca Ar Cl Al H

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**P Lewis Structures On your worksheet, try these elements on your own:**

Ca Ar Cl Al P

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**Ca Lewis Structures On your worksheet, try these elements on your own:**

P Ca Ar Cl Al Ca

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**Ar Lewis Structures On your worksheet, try these elements on your own:**

P Ca Ar Cl Al Ar

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**Cl Lewis Structures On your worksheet, try these elements on your own:**

P Ca Ar Cl Al Cl

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**Al Lewis Structures On your worksheet, try these elements on your own:**

P Ca Ar Cl Al Al

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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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