1. WARM UP
Name 3 scientists who worked on quantum theory or quantum mechanics. Describe their contribution in 3 words or less.

2. Quantum Numbers

3. Principal (n)
Shell / Energy Level
1, 2, 3, etc

4. Momentum / Shape (ℓ) Subshells (in a shell) s p d f
Shell # = # of different subshells
1: s 2: s, p 3: s,p,d 4: s,p,d,f

5. Magnetic (mℓ) Orbitals (in subshell) s: 1 orbital p: 3 orbitals
d: 5 orbitals f: 7 orbitals

6. Electron Spin (ms)
Up or down (+ ½ or – ½)
2 e- per orbital

7. Electron Counts Subshells hold e- based on their orbitals
Ex: s = ___ orbitals = ___ e-

8. Electron Counts
Ex: n=2 = ____ subshells = ___ orbitals = ___ = electrons

9. WRAP UP
For shells 1 – 5, list: a) how many subshells are possible in each, and b) how many orbitals are possible in each subshell.

10. WARM UP
List the 4 types of quantum numbers, the name we call them, and the symbol that represents them.

11. WRAP UP
Explain why each of the following descriptions of electron locations is not possible.
The 4th electron in shell 2, s subshell
The 3rd electron in an orbital in a d subshell
The 2nd electron in the 8th orbital of an f subshell in the 8th shell

12. Do you like the Bohr model or the electron cloud model better? Why?
WARM UP
Do you like the Bohr model or the electron cloud model better? Why?

13. WRAP UP
Do you like quantum theory or wave mechanics better? Why?