Valence Electrons and Electron Dot Diagrams

Topic: Valence and Lewis Dot Diagrams

Please copy the main points into your notebook.

Target: Learn the purpose of Lewis Dot diagrams

Essential Question: What are Lewis Dot diagrams?

Talking Points: I can explain how to draw Lewis dot diagrams using valence electrons.

Remember Niels Bohr?

​Key Point: Bohrs' model of the atom shows electrons orbiting around the nucleus

Multiple Choice

Bohrs Model of the Atom shows ______ orbiting the nucleus in certain energy levels. Similar to how planets orbit the sun.

• Protons

• Neutrons

• Electrons

​Key Point: Valence electrons are located in the outer energy level of an atom.

Multiple Choice

Valence electrons are located in the outer _________ _________ of an atom.

• Energy Level

• Neutron Cloud

• Subatomic Particle

• Fixed Superpath

​Key Point: Elements in the same vertical column have the same number of valence electrons.

​Get your periodic table out now!

Multiple Choice

How many valence electrons does Be have?

• 2

• 4

• 5

• 9

Multiple Choice

How many valence electrons does Si have?

• 4

• 6

• 14

• 28

Multiple Choice

How many valence electrons does Nitrogen have?

• 5

• 7

• 8

• 14

Multiple Choice

How many valence electrons does Oxygen have?

• 1

• 6

• 8

• 16

Group 7 has 7 valence electrons.

​7 valence electrons = 7 dot for the lewis dot diagram

Ex. Group 7

Group 1 has 1 valence electron.

​1 valence electron = 1 dot for the lewis dot diagram

Ex. Group 1

Lewis Dot diagrams are created using the same valence electrons from the periodic table

Trivia Questions!

​What do you remember about the peridodic table?

Multiple Choice

Which element is in group 14 and period 3?

• N

• Na

• Si

• Li

Multiple Choice

Which element is in group 11 and period 5?

• Na

• B

• Ag

• Rb

Multiple Choice

How would Calcium be classified?

• Metal

• Nonmetal

• Metalloid

Multiple Choice

What is an element that is a gas with no luster and is not a conductor of heat or electricity.

• Metal

• Nonmetal

• Metalloid

Multiple Choice

What is an element that is shiny and a good conductor of heat and electricity?

• Metal

• Nonmetal

• Metalloid

Multiple Choice

These elements border the zigzag line on the periodic table.

• metals

• nonmetals

• metalloids

Multiple Choice

How many valence electrons does Xenon have?

• 54

• 131

• 8

• 18

Multiple Choice

How many valence electrons does Magnesium have?

• 2

• 12

• 24

• 24.305

Multiple Choice

How many valence electrons does Potassium have?

• 19

• 1

• 39

• 4

Multiple Choice

In what section of the periodic table can Silver be found?

• Alkali Metals

• Noble Gases

• Transition Metals

• Rare Earth Elements

Multiple Choice

In what section of the periodic table can Iodine be found?

• Alkaline Earth

• Halogens

• Noble Gases

• Lanthanides