2. S- orbitals (l=0)

3. p- orbital (l=1)

4. d-orbital (l=2)

5. Energy Level diagrams

6. Electronic Configuration Pauli exclusion principle – no two electrons in an atom can have the same four quantum numbers.

7. Electronic Configuration Pauli exclusion principle – no two electrons in an atom can have the same four quantum numbers. Shielding may cause some orbitals to over lap.

8. Electronic Configuration Pauli exclusion principle – no two electrons in an atom can have the same four quantum numbers. Shielding may cause some orbitals to over lap. Hunds rule – the most stable arrangement of electrons in subshells is the one with greatest number of parallel spins

11. Number of electrons in Orbitals s = 2 e- p = 6 e- d = 10 e- f = 14 e-