1. Chapter 5.2 Electron Configuration and the Periodic Table

2. Objectives Describe the relationship between electrons in sublevels and the length of each period of the periodic table. Locate and name the four blocks of the periodic table. Explain the reasons for these names. Discuss the relationship between group configurations and group numbers. Describe the locations in the periodic table and the general properties of the alkali metals, the alkaline earth metals, the halogens, and the noble gases.

3. Periods and Blocks of the Periodic Table p1 p6 s1 s2 s2 1 d1 d10 2 3 4 3 5 4 5 6 7 4 Periods = energy levels 5 f1 f14

5. soft metal

6. very reactive

7. not found in nature as free elements

9. harder, denser and stronger than alkali metals

10. Reactive, but not as much as alkali

12. Has s1 configuration

14. Has s2 configuration

17. Sum of outer s and d equal group number

18. Properties:

19. Good conductors of heat and electricity

20. High luster

21. Less reactive than alkali and alkaline earth metals

22. Some are so unreactive, they don’t form compounds

26. Properties

27. Most reactive nonmetal

28. React vigorously with most metals

29. Some are gases at room temperature