How to Lewis and Bohr

​ Lewis Dot and Bohr models

LI: We are leaning to analyze and interpret Lewis and Hohr diagrams to understand molecular bonding and electron distribution in chemical compounds.

SC: You are successful when you can:
1. Identify key features accurately, identify, and label the important compone nts including atoms, bonds, and lone pairs.
2. Analyze diagrams and explain the significance of electron arrangements.

​Remember Midterm on Monday and Tuesday

Bellwork
Create a Level 2 question regarding the previous chemistry lesson to discuss with the class.

Multiple Choice

How many electrons can go in the first energy level?

• 2

• 8

• 18

• 32

Multiple Choice

How many electrons can go in the second energy level?

• 2

• 8

• 18

• 32

Multiple Choice

How many electrons can go in the third energy level?

• 2

• 8

• 18

• 32

​Draw the Bohr Diagram for the following:

• H, Li, Na

​Draw the Bohr Diagram for the following:

• H, Li, Na

• What do you notice about all of the valence shells?

​Draw the Bohr Diagram for the following:

• H, Li, Na

• What do you notice about all of the valence shells?

• They all have one electron!

​Draw the Bohr Diagram for the following:

• H, Li, Na

• What do you notice about all of the valence shells?

• They all have one electron!

• Now try this column…

  • Be, Mg

​Draw the Bohr Diagram for the following:

• H, Li, Na

• What do you notice about all of the valence shells?

• They all have one electron!

• Now try this column…

  • Be, Mg

• Valence trend…

Multiple Choice

What is a Lewis Dot Structure?

• It shows all of the particles in the atom.

• Contains protons and neutrons

• Only shows the element symbol and it's outer most electron shell

• Contains protons and electrons

Multiple Choice

What is the the outermost shell with electrons?

• Shells

• Isotope

• Orbit

• Valence

Multiple Choice

How many valence (outer) electrons does an Oxygen atom have?

• 2

• 6

• 8

• 16

Multiple Choice

What is the mass number of this atom of Chlorine?

• 17

• 18

• 35

• 35.453

Multiple Choice

Which element is this?

• Calcium

• Chlorine

• Silicon

• Potassium

Multiple Choice

Which Bohr model represents Be?

Multiple Choice

Which Bohr model represents Neon?

Multiple Choice

Is this a correct dot diagram for fluorine (F)

• Yes

• No

Multiple Choice

How many electrons should Nitrogen have around its Lewis dot model?

• 1
• 3
• 4
• 5

Multiple Choice

What is the correct lewis dot diagram for Boron?