Ms. Mandel Physical Science

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Presentation transcript:

Ms. Mandel Physical Science How to Draw Lewis Structures (Symbols) Ms. Mandel Physical Science

Learning Target I can draw Lewis Symbols for the first 20 elements.

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

Group 1 = 1 valence electron Group 2 = 2 valence electrons Group 8 = 8 electrons Group 1 = 1 valence electron Except for He, it has 2 electrons Group 2 = 2 valence electrons What is a column called? 3, 4, 5, 6, 7 What are valence electrons? What do elements in the same column have in common? www.chem4kids.com

C Lewis Symbols Write the element symbol. How many valence electrons does C have? 4 Starting at the right, draw 4 electrons, or dots, counter-clockwise around the element symbol. Refer to pattern template. C Drawing Lewis Symbols Template

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

You should know how to draw Lewis Structures for the first 20 elements You should know how to draw Lewis Structures for the first 20 elements. Use this information to complete your Periodic Table project.