LEWIS MODEL.

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Presentation transcript:

LEWIS MODEL

Do Now: What is a valence electron? The electrons in the outermost shell Groups go vertically Group 1 has 1 valence electron (VE) Group 2 has 2 VE Group 13 has 3 VE Group 14 has 4 VE Group 15 has 5 VE Group 16 has 6 VE Group 17 has 7 VE Group 18 has 8 VE

1 17 18 2 13 14 15 16

H Li Now, you try Lithium Lewis Structures Find Hydrogen on the periodic table What group is it in? How many valence electrons does it have? H Hydrogen is in the first group and has 1 valence electron so it gets 1 dot. Now, you try Lithium Li

You go COUNTERCLOCKWISE Find Al (Aluminum) What group is it in? 3 How many valence electrons does it have? Find Mg (Magnesium) What group is it in? 2 How many valence electrons does it have? Al Mg

You go COUNTERCLOCKWISE Find C (Carbon) What group is it in? 14 How many valence electrons does it have? 4 Find Nitrogen What group is it in? 15 How many valence electrons does it have? 5 C N

You go COUNTERCLOCKWISE Find F (Flourine) What group is it in? 17 How many valence electrons does it have? 7 Find O (Oxygen) What group is it in? 16 How many valence electrons does it have? 6 F O

You go COUNTERCLOCKWISE Find He (Helium) What group is it in? 18 How many valence electrons does it have? 8 He

On your worksheet, try these elements on your own: Na P Cl