1. Grouping the Elements Chapter 5.2

2. Objectives: Explain why elements in a group often have similar properties. Describe the properties of the elements in the groups of the periodic table.

4. group contains metals

5. 1 electron in the outer level

6. very reactive

7. softness

8. color of silver

9. shininess

11. Alkaline-earth metal properties:

12. group contains metals

13. 2 electrons in the outer level

14. very reactive, but less reactive than alkali metals

17. groups contains metals

18. 1 or 2 electrons in the outer level

19. less reactive than alkaline-earth metals

21. Group 13 properties:

22. group contains one metalloid and five metals

23. 3 electrons in the outer level

24. reactive

25. solids at room temperatureB Ga Al In

27. group contains one nonmetal, two metalloids, and two metals

28. 4 electrons in the outer level

29. reactivity varies among the elements

30. solids at room temperature C Ge Pb Sn Si

32. 5 electrons in the outer level

33. reactivity varies among the elements

35. 6 electrons in the outer level

36. reactive

38. 7 electrons in the outer level

39. very reactive

41. group contains nonmetals

42. 8 electrons in the outer level (except helium, which has 2)

43. unreactive

45. 1 electron in the outer level

46. reactive

47. colorless, odorless gas at room temperature, low density