1. Intro to Atomic Structure BR 10/3-4
What are the 3 main parts of an atom?

2. F APE MAN!!!! 9 Atomic Number =Number of Protons Mass Number 18.9984
=Number of Electrons Atomic Number
= Number of Neutrons

3. Let’s Practice… Element Name Symbol Atomic # Mass # Chlorine Cl 17
# of Protons
# of Neutrons
# of Electrons
Chlorine Cl 17
35.45
Argon Ar
39.95 22

4. Atomic Structure

5. Nucleus

6. Proton + +

7. Neutrons

8. ORBITALS
ORBITALS

9. - Electrons -

10. Subatomic Particles

11. Isotopes Same element Different number of neutrons Different mass #
Ex C-12 and C-14