Valence Electrons
Simple Lewis Dot Symbol
100

Number of Valence electrons in the 13th (3A) column

3

100

Lewis dot for Hydrogen

H with one dot

200

Lewis dot for F

7 dots around F

200

Lewis dot for O

6 dots around O

300

Lewis dot for Mg 

2 dots around Mg

300

The Lewis Dot Structure of Antimony (Sb).

5 dots around Sb

400

Number of Valence electrons in the 18th (8A) column (INCLUDE THE EXCEPTION).

8 except for He which has only 2

400

The Lewis Dot Structure for Chlorine (Cl).

7 dots around Cl

500

Lewis dot for S

6 dots around S

500

The Lewis Dot Structure of Selenium (Se).

6 dots around Se

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