1. Electron Configuration

2. Time line of atomic model

3. Quantum Mechanical Model
Devised using math: Schrodinger equation
Determines the allowed energies an electron can have
Energy is released at specific amounts
Allows one to predict where an e- is most likely found.
These areas are described by their energy level and orbital.

4. Quantum Mechanical model - Energy levels are like rungs of a weird ladder

5. Orbitals: region of space where an e- is Like a room in a house
Weird shapes

6. Rules of Electron Configuration (where the e- is)
Aufbau Principle: fill lowest energy first
Pauli Exclusion Principle: 2 e-/orbital. e- have opposite spins.
Hund’s Rule: For orbitals with equal energy: e- go into each orbital and then start doubling up.

7. The following is an analogy between a frat house and an electron cloud
The following is an analogy between a frat house and an electron cloud. Fill in the following : 1st Floor
HOUSE ELECTRON CLOUD
_____ Story _____ Energy Level
_____Room types (fix on other slides) _____ Sublevels
____________ (type of room & how many) __________ orbitals
________ people total in this story _______ electrons total in this level

8. 2nd Floor

9. 3rd Floor

10. 4th floor

13. Hydrogen
 Helium
Lithium
Beryllium
Boron
Carbon
Sulfur
Titanium