Lewis Dot Structure.

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Presentation transcript:

Lewis Dot Structure

What is it? A way of showing how many valence electrons an element has

Valence Electrons Electrons in the outer-most orbital Important because they determine properties of elements

Finding # of Valence Electrons Use the periodic table (groups) to figure out how many electrons are in the outermost orbital A full orbital has 8 electrons Count the towers! Group 1 = 1 valence e- Group 2 = 2 valence e- Group 13 = 3 valence e- Group 14 = 4 valence e- Group 15 = 5 valence e- Group 16 = 6 valence e- Group 17 = 7 valence e- Group 18 = 8 valence e-

Lewis Dot Structure First find the element symbol Find the # of valence electrons Draw a dot around the element for each electron