Valance Electrons, Lewis electron Dot Structures and the Periodic Table
Lewis Dot Structures
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Transcript of Lewis Dot Structures
Lewis Dot Structures
Valence Electrons• Valence electrons are the most important
electrons because they determine reactivity – They are used in bonding
• What are valence electrons?– Electrons on the outer most energy level
• How can we easily find out the number of valence electrons?– Group Number
Representing Valence Electrons
• Lewis Dot Structures– Because valence electrons are the most
important, these are the only electrons we will show
How to Draw Lewis Dot Structures
• Step 1: Write the element’s symbol• Step 2: Determine the number of valence
electrons• Step 3: Start drawing a dot on the right
side of the symbol • Step 4: Draw the rest of the dots by
moving counter clockwise and putting 1 on each side
Example• Step 1:• Step 2:
– 7• Step 3:• Step 4: Cl