1. Bohr Model
of the ATOM

2. How do we know how many electrons
are in an atom??
• From the ATOMIC NUMBER!
Atomic #  # of protons  # of protons = # of
electrons

3. Da Rules:
• Electrons are found in
the________________.
Electron Cloud
• The electrons fill into
Energy Levels
_________________ or
Rings
__________________.
• They electrons always
inside
fill from the _________
outside
to the ____________.

4. Da Rules
• The first energy level
can contain _______
2
electrons.
• The second and third
energy level can
8
contain _______
electrons.

5. Draw the Bohr Diagram of Lithium

6. Draw the Bohr Diagram of Oxygen

7. Draw the Bohr Diagram of Chlorine