1. University of Kentucky
Clicker Questions
Chapter 8
Periodic Properties
of the Elements
Allison Soult
University of Kentucky

2. Which of the following correctly illustrates the valence electron configuration of sulfur?b)
Answer: a c) d)

3. Which of the following correctly illustrates the valence electron configuration of sulfur?b)
Answer: a c) d)

4. Which of the following is the correct electron configuration for bromine?
1s22s22p63s23p64s24d104p5
1s22s22p63s23p64s23d104p5
1s22s22p63s23p64s23d104p6
1s22s22p63s23p64s24p6
1s22s22p63s23p54s24p5
Answer: b

5. Which of the following is the correct electron configuration for bromine?
1s22s22p63s23p64s24d104p5
1s22s22p63s23p64s23d104p5
1s22s22p63s23p64s23d104p6
1s22s22p63s23p64s24p6
1s22s22p63s23p54s24p5
Answer: b

6. What is the ground state electron configuration for Mo?
Mo: [Kr]5s24d4
Mo: [Kr]5s04d6
Mo: [Ar]4s23d4
Mo: [Ar]4s13d5
Mo: [Kr]5s14d5
Answer: e

7. What is the ground state electron configuration for Mo?
Mo: [Kr]5s24d4
Mo: [Kr]5s04d6
Mo: [Ar]4s23d4
Mo: [Ar]4s13d5
Mo: [Kr]5s14d5
Answer: e

8. What is the ground state electron configuration for V?
V: [Kr]4s33d2
V: [Kr]4s24d3
V: [Ar]4s23d3
V: [Ar]3d3
Answer: c

9. What is the ground state electron configuration for V?
V: [Kr]4s33d2
V: [Kr]4s24d3
V: [Ar]4s23d3
V: [Ar]3d3
Answer: c

10. How many valence electrons does an atom of vanadium possess?2 3 4 5
Answer: e

11. How many valence electrons does an atom of vanadium possess?2 3 4 5
Answer: e

12. Which element is the largest?Rb Sr Cs Ba Cl
Answer: c

13. Which element is the largest?Rb Sr Cs Ba Cl
Answer: c

14. Which element has the greatest effective nuclear charge?O F S Cl P
Answer: b

15. Which element has the greatest effective nuclear charge?O F S Cl P
Answer: b

16. Which element’s 4+ ion would have the following electron configuration?
[Kr]4d10 Ge Te Sn Se Sb
Answer: c

17. Which element’s 4+ ion would have the following electron configuration?
[Kr]4d10 Ge Te Sn Se Sb
Answer: c

18. Which of the following is the correct electron configuration for the anion typically formed from oxygen?
1s22s22p4
1s22s22p2
1s22s22p6
1s22s22p3
1s22s22p5
Answer: c

19. Which of the following is the correct electron configuration for the anion typically formed from oxygen?
1s22s22p4
1s22s22p2
1s22s22p6
1s22s22p3
1s22s22p5
Answer: c

20. Which of the following is diamagnetic?Sn
Sn2+
Sn4+
Sn2+ and Sn4+
All are paramagnetic.
Answer: d

21. Which of the following is diamagnetic?Sn
Sn2+
Sn4+
Sn2+ and Sn4+
All are paramagnetic.
Answer: d

22. Which ion is the smallest?
Mg2+
Ca2+
Answer: c

23. Which ion is the smallest?
Mg2+
Ca2+
Answer: c

24. All particles are the same size.
Consider the following isoelectronic series: Which particle is the largest?
Cl– Ar K+ Ca2+
Cl– Ar K+
Ca2+
All particles are the same size.
Answer: a

25. All particles are the same size.
Consider the following isoelectronic series: Which particle is the largest?
Cl– Ar K+ Ca2+
Cl– Ar K+
Ca2+
All particles are the same size.
Answer: a

26. Which alkali metal will have the smallest first ionization energy?Ca Mg Li Na K
Answer: e

27. Which alkali metal will have the smallest first ionization energy?Ca Mg Li Na K
Answer: e

28. Which element has the largest first ionization energy?Be B C N O
Answer: d

29. Which element has the largest first ionization energy?Be B C N O
Answer: d
Note: This is an exception due to the added stabilization obtained by removing an electron from O to have a half-filled 2p subshell.

30. Consider the following successive ionization energies (kJ/mol):
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, ,345
Which element in period 3 would most likely show this trend in ionization energies? Mg Al Si P S
Answer: d

31. Consider the following successive ionization energies (kJ/mol):
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, ,345
Which element in period 3 would most likely show this trend in ionization energies? Mg Al Si P S
Answer: d

32. Which element is the most nonmetallic?K Ca Mg O F
Answer: e

33. Which element is the most nonmetallic?K Ca Mg O F
Answer: e

34. Which of the following is NOT a property of metals?
good conductors of heat
poor conductors of electricity
malleable
ductile
Answer: b

35. Which of the following is NOT a property of metals?
good conductors of heat
poor conductors of electricity
malleable
ductile
Answer: b