1. Electron Configuration

2. Quantum Number • Number that specifies the properties of the atomic orbitals • Tells us the distance from the nucleus and the shape of the orbital

3. Principal Quantum Number • Main level or shell • These are the Bohr energy levels n = 1, n = 2, n = 3 • As n increases, the distance from the nucleus increases

4. Sublevel • Each main level is divided into sublevels • Four types of sublevels s p d f

5. Orbital • Each sublevel is made of orbitals • Every orbital can hold 2 electrons

6. s – 1 orbital – 2 electrons • p – 3 orbitals – 6 electrons • d – 5 orbitals – 10 electrons • f – 7 orbitals – 14 electrons

7. S orbital • One spherical shaped orbital

8. P orbitals • Three dumbbell shaped • One dumbbell in each axis

9. P Orbitals

10. D orbitals (5)

11. F orbitals (7)

13. Electron Configuration • Arrangement of electrons in an atom • Aufbau Principle – electrons fill into an atom starting with the lowest energy levels

14. Electron Configuration Polka • electron configuration.avi

15. Electron Spin • Way which the electrons rotate on their axis • Pauli Exclusion Principle – in order for two electrons to occupy the same orbital, they must have opposite spin • Write configuration for C S

16. Higher Order • There are exceptions to the order of filling as you move to higher levels Br

18. Which sublevel consists of 5 orbitals • s • p • d • f

19. Which sublevel is made of dumbbell shaped orbitals? • s • p • d • f

20. How many electrons fill the f orbitals • 2 • 6 • 10 • 14

21. How many electrons fill the 3rd main energy level? • 2 • 8 • 18 • 32

22. What is the correct electron configuration for P • 1s22s22p63s23p6 • 1s22s22p63s23p4 • 1s22s22p63s2 • 1s22s22p63s23p3

23. What is the correct end configuration for Ba • 7s2 • 6s1 • 6s2 • 5s2

24. Homework Write the electron configuration for each below: • Ne 6) I • Cr 7) Sr • Se 8) Kr • Cu 9) Sn • Ag 10) Zn