1. Chapter 8 Basic Concepts of Chemical Bonding
Chemistry, The Central Science, 11th edition
Theodore L. Brown; H. Eugene LeMay, Jr.;
Bruce E. Bursten and Catherine J. Murphy
Chapter 8 Basic Concepts of Chemical Bonding
Donna Narsavage Heald
Siena College
Loudonville, NY
 2009, Prentice Hall

2. Which atom sometimes violates the octet rule?N O F S

3. Which atom sometimes violates the octet rule?N O F S

4. Order the following according to increasing atomic radius.
Ge Si Se Cl
Ge < Si < Se < Cl
Se < Si < Ge < Cl
Si < Cl < Ge < Se
Cl < Si < Se < Ge
Si < Ge < Se < Cl

5. Order the following according to increasing atomic radius.
Ge Si Se Cl
Ge < Si < Se < Cl
Se < Si < Ge < Cl
Si < Cl < Ge < Se
Cl < Si < Se < Ge
Si < Ge < Se < Cl

6. Which of the following will have the largest lattice energy?
CsCl
ZnS
CaF2
NaCl
Diamond

7. Which of the following will have the largest lattice energy?
CsCl
ZnS
CaF2
NaCl
Diamond

8. What is the electronic configuration of Fe2+?
4s23d4
4s13d5
3d5
3d6
4s23d8

9. What is the electronic configuration of Fe2+?
4s23d4
4s13d5
3d5
3d6
4s23d8

10. How many unpaired electrons are there in Cu+?1 2 3 4

11. How many unpaired electrons are there in Cu+?1 2 3 4

12. What is the average bond order in the molecule ozone, O3?1
1.33
1.5
1.67 2

13. What is the average bond order in the molecule ozone, O3?1
1.33
1.5
1.67 2

14. What is the average S—O bond order in the Lewis structure of sulfur trioxide, SO3?
0.5 1
1.33
1.5 2

15. What is the average S—O bond order in the Lewis structure of sulfur trioxide, SO3?
0.5 1
1.33
1.5 2

16. How many resonance structures can be drawn for NO3–?1 2 3 4 5

17. How many resonance structures can be drawn for NO3–?1 2 3 4 5

18. Considering formal charge, what is the preferred Lewis structure of NCO–?

19. Considering formal charge, what is the preferred Lewis structure of NCO–?