4. Let’s practice what we know!

5. Mendeleev organized the chemical elements based on their?
properties

6. A horizontal row in the periodic table is called a(n)?

7. The periodic law states that…
a. no two electrons with the same spin can be found in the same place in an atom.
b. the physical and chemical properties of the elements are functions of their atomic number.
c. wave patterns repeat at regular intervals.
d. the chemical properties of elements can be grouped according to periodicity.

8. The periodic law states that…
b. the physical and chemical properties of the elements are functions of their atomic number.

9. An element with the general electron configuration ns2np1 for its outermost electrons would be in Group 13

10. When a carbon atom is in its ground state, how many electrons does it have in its outermost shell?4

11. Which of the following elements is most similar in behavior to calcium?
a. magnesium b. sodium c. sulfur d. chlorine

12. Which of the following elements is most similar in behavior to calcium?
a. magnesium

13. Which common family name is associated with each periodic group or family of elements?
a. Group 2: b. Group 3: c. Group 17: d. Group 18:
alkaline- earth metals
transition metals
halogens
noble gases

14. The electron configurations of main-group elements end in what orbitals?
s and p orbitals

15. Which of the following elements is a transition metal?
a. calcium b. iron c. sodium d. sulfur

16. Which of the following elements is a transition metal?
b. iron

17. All the alkali metal elements are found on the periodic table in which group?

18. A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound is called?
electronegativity

19. Which of the following elements has the greatest atomic radius?
a. Al b. S c. Si d. C

20. Which of the following elements has the greatest atomic radius?
a. Al

21. Which of the following elements has the greatest atomic radius: Li, O, C, or F?

22. Which of the following elements has the smallest atomic radius: Li, O, C, or F?

23. Of the elements Ca, Be, Ba, and Sr, which has the largest atomic radius?

24. Of the elements Al, Mg, Si, and Na, which has the smallest atomic radius?

25. Consider four hypothetical main-group elements Q, R, T, and X, that have outer configurations indicated below.
Q: 3s23p5 R: 3s1 T: 4d105s25p5 X: 4d105s25p1
a. Identify the block location of each hypothetical main-group element

26. Consider four hypothetical main-group elements Q, R, T, and X, that have outer configurations indicated below.
Q: 3s23p5 R: 3s1 T: 4d105s25p5 X: 4d105s25p1
b. Which of these elements is in the same period?

27. Consider four hypothetical main-group elements Q, R, T, and X, that have outer configurations indicated below.
Q: 3s23p5 R: 3s1 T: 4d105s25p5 X: 4d105s25p1
c. Which element would you expect to have the highest first ionization energy?

28. Consider four hypothetical main-group elements Q, R, T, and X, that have outer configurations indicated below.
Q: 3s23p5 R: 3s1 T: 4d105s25p5 X: 4d105s25p1
c. Which element would you expect to have the lowest first ionization energy?

29. Which of the following elements has the lowest electronegativity?
a. C b. F c. Li d. O

30. Which of the following elements has the lowest electronegativity?
c. Li

31. Which of the following elements has the greatest ionization energy?
a. Ga b. K c. Bi d. As

32. Which of the following elements has the greatest ionization energy?
d. As

33. Which of the following elements have full outer energy levels when they are in the ground state?
a. alkali metals b. noble gases c. halogens d. transition metals

34. Which of the following elements have full outer energy levels when they are in the ground state?
b. noble gases

35. In which period is an element that has the electron configuration 1s22s22p63s23p63d104s24p1 when it is in its ground state?
Period 4

36. Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing ?

37. Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing ?
Atomic mass

38. Mendeleev did not always list elements in his periodic table in order of increasing atomic mass because he  grouped together elements with similar  ?
properties

39. The person whose work led to a periodic table based on increasing atomic number was?
Moseley

40. The periodic table… 
a. permits the properties of an element to be predicted before the element is discovered. 
b. will be completed with element 118.
c. has been of little use to chemists since the early 1900s. 
d. was completed with the discovery of the noble gases.

41. Evidence gathered since Mendeleev's time indicates that a better arrangement than atomic mass for elements in the periodic table is an arrangement by 
atomic number

42. The discovery of what elements added a new column to Mendeleev's periodic table?   
Noble gases

43. What are the radioactive elements with atomic numbers from 90 to 103 called? 
Actinides

44. What are the elements with atomic numbers from 58 to 71 called?
Lanthanides

45. The periodic law states that the physical and chemical properties of elements are periodic functions of their atomic… 
Number

46. The atomic number of lithium, the first element in Group 1, is 3
The atomic number of lithium, the first element in Group 1, is 3. The atomic number of the second element in this group is …  11

47. Krypton, atomic number 36, is the fourth element in Group 18
Krypton, atomic number 36, is the fourth element in Group 18. What is the atomic number of xenon, the fifth  element in Group 18? 54

48. For elements in groups 1, 2, and 18, the increase in atomic number for successive elements follows the pattern 8, 8, 18, ?, 32. What number completes the pattern?  18

49. How many elements are in a period in which only the s and p sublevels are filled?  8

50. How many elements are in a period in which only the s, p, and d sublevels are filled?  18

51. Elements to the right side of the periodic table (p-block elements) have properties most associated with…   
nonmetals

52. Metals (Transition metals)
Elements in which the d-sublevel is being filled have the properties of…
Metals (Transition metals)

53. Name all the blocks which contain metals:
s, p, d, f

54. Which sublevel contains nonmetals?p

55. Hydrogen is placed separately from other elements in the periodic table because it…
is a gas
does not exist as a free element in nature
has atomic number one
has many unique properties

56. Hydrogen is placed separately from other elements in the periodic table because it…
d. has many unique properties

57. To which block do the actinide elements belong?f

58. The most reactive group of the nonmetals is the…
halogens

59. The most reactive group of the metals is the…
Alkali metals

60. What is the most characteristic property of the noble gases?
They are unreactive

61. End of Chapter 5 Show