1. Chapter 5 Quantum Numbers Part 2

2. The Third Quantum Number The third quantum number identifies the orbital that the electron is in.

3. The Third Quantum Number The third quantum number identifies the orbital that the electron is in. An orbital is an area within a sublevel that can hold up to two electrons.

4. An “s” sublevel has one orbital

5. A “p” sublevel has three orbitals

6. A “d” sublevel has five orbitals

7. An “f” sublevel has seven orbitals

8. The 4 th Energy Level n = ?

9. The 4 th Energy Level n = 4

10. The 4 th Energy Level How many sublevels are present and what type are they?

11. The 4 th Energy Level How many sublevels are present and what type are they? Four sublevels: s, p, d, f

12. The 4 th Energy Level How many orbitals are present?

13. The 4 th Energy Level How many orbitals are present? n 2 = (4) 2 = 16

14. The 4 th Energy Level What is the maximum number of electrons?

15. The 4 th Energy Level What is the maximum number of electrons? 2n 2 = 2(4) 2 = 32

16. The Fourth Quantum Number

17. Also called the spin quantum number. Can be either +1/2 or -1/2.

18. The Fourth Quantum Number Also called the spin quantum number. Can be either +1/2 or -1/2. Specifies the direction of spin of the electron on its axis.

19. The Fourth Quantum Number Also called the spin quantum number. Can be either +1/2 or -1/2. Specifies the direction of spin of the electron on its axis. Spins are designated up or down.

20. Electron Spin Opposite spins produce opposite magnetic fields. +1/2-1/2

22. What sublevel is the first to be filled with electrons?

23. O

24. Which sublevel listed contains orbitals of the highest energy?

25. O