1. Bohr Model Gallery

2. 7 - + 7 7 Draw the symbol used to represent protons in the nucleus.
Diagram #1 7 - + 7 7
Draw the symbol used to represent protons in the nucleus.
How many protons do you count?
Draw the symbol used to represent electrons.
How many electrons do you count?
What is the atomic number of this element?

3. 13 13 13 3 Al What element does this Bohr model represent?
Diagram #2 13 13 13 3 Al
What element does this Bohr model represent?
How many electrons do you count?
How many protons should be in the nucleus of this atom?
What is the atomic number of this element?
How many valence electrons do you count?

4. 4 Be 2 2 Proton What do the plus signs in the nucleus represent?
Diagram #3
What do the plus signs in the nucleus represent?
How many electrons should be on the 1st energy level?
How many electrons should be on the 2nd energy level?
What element does this Bohr model represent?
What is the atomic number of this element?

5. Beryllium Be Negative - Protons & Neutrons
Diagram #4
Beryllium Be
Negative -
Protons & Neutrons
What two types of particles are found in the nucleus?
What kind of charge do the electrons carry?
Based on the number of electrons you count, what element do you suspect this model represents?

6. 3 1 Neon Positive Ne How many electrons do you count in Lithium?
Diagram #5
Positive
Neon Ne 1 3
How many electrons do you count in Lithium?
How many valence electrons do you count in Sodium?
What charge do the protons carry?
Use your Periodic Table. Find the element that has one less proton than Sodium.

7. In the center Nucleus In electron cloud Energy Level, Electron
Diagram #6
In electron cloud
Energy Level, Electron
In the center
Nucleus
What part of the atom does “Dart Z” represent?
How do you know?
What part of the atom does “Dart W” represent?

8. 2 Electrons in 1st energy level3
Protons
Lithium Li
Diagram #7
What element does this Bohr model represent?
What does the “3p+” represent?
What does the “2e-” represent?
How many valence electrons are represented on this model?

9. 9 Non-metal Fluorine F 9 Protons Group 17, left side of PT
Diagram #8
Group 17, left side of PT 9
Non-metal
Fluorine F 9
Protons
What does “P:9” represent in this model?
What element does this model represent?
Is it a metal or a non-metal?
How do you know?
How many electrons do you count?

10. 2 26 How many valence electrons does this atom have?
Diagram #9
Use MAN,
M-A=N,
56-26=30 26 2
How many valence electrons does this atom have?
What is the atomic number of this element?
Explain how you could calculate that this element has 30 neutrons in the nucleus.

11. 3rd Energy 2nd Energy 1st Energy
Aluminum Al
Aluminum Al
Which element has 7 protons and 7 electrons?
Which element has an atomic number of 7?
Which element has 3 protons and 1 valance electron?
Which element has 13 protons and 13 electrons?
Which element has an atomic number of 13?
Diagram #10
Nitrogen N
Lithium Li
Nitrogen N
3rd Energy 2nd Energy 1st Energy
Level Level Level