Valence Electrons and Electron Dot Diagrams

Electron Dot Diagrams

Chemistry Demo Lesson.

Teacher's Name; Amadi, Christiana.

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What is Lewis Dot Diagram?

Groups

• Using this table on your right ONLY applies to elements in Groups 1, 2, 13-18.

• We WILL NOT be talking about elements in groups 3-12 for this exercise! (Transition Metals)

Valence Electrons

The electrons in the outer shell of an atom that are available for bonding are called valence electrons.

move to the next slide for a video demonstration

Use a Periodic Table to draw electron dot diagrams for these elements in your notebook, then answer the following questions.

Draw

Draw the electron dot diagram for Flourine.

Then Model it.

Draw

Draw the electron dot diagram for Sulfur.

Then model it.

Draw

Draw the electron dot diagram for Ne.

Then model it.

Multiple Choice

How many VALENCE ELECTRONS does Lithium have?

• 3

• 1

• 2

Multiple Choice

How many VALENCE ELECTRONS does Boron have?

• 3

• 5

• 2

Multiple Choice

How many VALENCE ELECTRONS does Nitrogen have?

• 7

• 5

• 2

Multiple Choice

Which is a CORRECT electron dot diagram for Beryllium?

Multiple Choice

Which is a CORRECT electron dot diagram for Oxygen?

Fill in the Blanks

Fill in the Blanks

Exit Ticket.

Answer the following questions.

Draw

Draw the dot diagram for Oxygen.

Open Ended

Why do Sodium and Potassium have the same number of dots in their electron dot diagrams?