1. General Chemistry Principles & Modern Applications 9 th Edition Petrucci/Harwood/Herring/Madura Chapter 10 Chemical Bonding I: Basic Concepts Dr. Travis D. Fridgen Memorial University of Newfoundland © 2007 Pearson Education

2. BrFOSAl 1.2.3.4.5. Which of the following is an incorrect Lewis structure?

3. BrF O SAl 1.2.3.4.5. Which of the following is an incorrect Lewis structure?

4. Which of the following contains a coordinate covalent bond? NHH H H FF OH H + 1. 2. 3. HH 4. HCl 5.

5. Which of the following contains a coordinate covalent bond? NHH H H FF OH H + 1. 2. 3. HH 4. HCl 5.

6. Which bond is most polar? 1. C-O 2. C-Cl 3. C-F 4. C-H 5. C-N

7. Which bond is most polar? 1. C-O 2. C-Cl 3. C-F 4. C-H 5. C-N

8. How many valence electrons are there for acetone? 1. 18 2. 20 3. 24 4. 28 5. 30

9. How many valence electrons are there for acetone? 1. 18 2. 20 3. 24 4. 28 5. 30

10. How many valence electrons are there for the phosphate polyatomic ion, PO 4 3- ? Phosphorous, P is the element under nitrogen. 3- 1. 32 2. 29 3. 26 4. 25 5. 22

11. How many valence electrons are there for the phosphate polyatomic ion, PO 4 3- ? Phosphorous, P is the element under nitrogen. 3- 1. 32 2. 29 3. 26 4. 25 5. 22

12. Which of the following is an incorrect Lewis Structure? C OO B F F F C O HH N O N H H H H + 1.2.3. 4. 5.

13. Which of the following is an incorrect Lewis Structure? C OO B F F F C O HH N O N H H H H + 1.2.3. 4. 5.

14. Xe F F F F F F F F F F F F F F F F Which of the following is the correct Lewis structure for XeF 4 ? 1. 2. 3. 4.

15. Xe F F F F F F F F F F F F F F F F 1. 2. 3. 4. Which of the following is the correct Lewis structure for XeF 4 ?

16. OOO HHO To the right are the Lewis structures of both water and ozone. Which of the following statements is best? 5. The bond angle in ozone is less than the bond angle in water. 1. The bond angle in water is 109.5 o. 2. The bond angle in ozone is 109.5 o. 3. The bond angles in water and ozone are both >109.5 o. 4. The bond angles in water and ozone are both <120 o.

17. OOO HHO To the right are the Lewis structures of both water and ozone. Which of the following statements is best? 5. The bond angle in ozone is less than the bond angle in water. 1. The bond angle in water is 109.5 o. 2. The bond angle in ozone is 109.5 o. 3. The bond angles in water and ozone are both >109.5 o. 4. The bond angles in water and ozone are both <120 o.

18. The Lewis structure for SF 4 is, S FF F F Linear 1. Trigonal Planar 2. Tetrahedral 3. Trigonal Bipyramidal 4. Octahedral 5. The electron group geometry for SF 4 is?

19. The Lewis structure for SF 4 is, S FF F F Linear 1. Trigonal Planar 2. Tetrahedral 3. Trigonal Bipyramidal 4. Octahedral 5. The electron group geometry for SF 4 is?

20. The Lewis structure for SF 4 is given below S FF F F The geometry of SF 4 is? 1. trigonal bipyramidal 2. planar 3. tetrahedral 4. seesaw 5. square pyramidal

21. The Lewis structure for SF 4 is given below S FF F F The geometry of SF 4 is? 1. trigonal bipyramidal 2. planar 3. tetrahedral 4. seesaw 5. square pyramidal

22. I) II) III)IV) Which of the statements about the following molecules is false? 1. All the molecules are octahedral. 5. All bond angles in I) and III) are 90 o or 180 o. 4. IV) is a more polar molecule than II). 3. I) and III) are non-polar molecules. 2. All bonds in the molecules are polar.

23. I) II) III)IV) Which of the statements about the following molecules is false? 1. All the molecules are octahedral. 5. All bond angles in I) and III) are 90 o or 180 o. 4. IV) is a more polar molecule than II). 3. I) and III) are non-polar molecules. 2. All bonds in the molecules are polar.

24. There are three isomers of C 2 H 2 Cl 2. Which isomer has a dipole moment of 0 D? 1.2.3.

25. There are three isomers of C 2 H 2 Cl 2. Which isomer has a dipole moment of 0 D? 1.2.3.

26. The electronegativities of H, O, F, and S are 2.1, 3.5, 4.0 and 2.5, respectively. Which of the following molecules has the highest dipole moment? 1.2.3.

27. The electronegativities of H, O, F, and S are 2.1, 3.5, 4.0 and 2.5, respectively. Which of the following molecules has the highest dipole moment? 1.2.3.

28. Which bonds are in the correct order of decreasing bond length? cysteine 1. S-H, O-H, N-H, C-H, C-S 2. C-H, N-H, O-H, S-H, C-S 3. C-S, C-H, N-H, O-H, S-H 4. C-S, S-H, C-H, N-H, O-H 5. C-S, C-H, O-H, N-H, S-H

29. Which bonds are in the correct order of decreasing bond length? cysteine 1. S-H, O-H, N-H, C-H, C-S 2. C-H, N-H, O-H, S-H, C-S 3. C-S, C-H, N-H, O-H, S-H 4. C-S, S-H, C-H, N-H, O-H 5. C-S, C-H, O-H, N-H, S-H

30. methionine Which bonds are in the correct order of increasing bond length? 1. C-S, C=O, C-O, C-N, C-C 2. C=O, C-O, C-N, C-C, C-S 3. H-O, C-O, H-N, C-N, H-C 4. C-H, N-H, O-H, C-C, C-O 5. O-H, N-H, C-H, C-S, C-C

31. methionine Which bonds are in the correct order of increasing bond length? 1. C-S, C=O, C-O, C-N, C-C 2. C=O, C-O, C-N, C-C, C-S 3. H-O, C-O, H-N, C-N, H-C 4. C-H, N-H, O-H, C-C, C-O 5. O-H, N-H, C-H, C-S, C-C

32. Which of the following bonds would require the least amount of energy to break? 1. 2. 3. 4. 5.

33. Which of the following bonds would require the least amount of energy to break? 1. 2. 3. 4. 5.

34. Given that the Cl-Cl, Br-Br and H-Br bond Strengths are 243, 193 and 366 kJ mol -1 and that the C-Cl, C-Br, and C-H bond strengths are 330, 288 and 413 kJ mol -1 which of the following three Addition reactions are the most exothermic? 1 2 3

35. Given that the Cl-Cl, Br-Br and H-Br bond Strengths are 243, 193 and 366 kJ mol -1 and that the C-Cl, C-Br, and C-H bond strengths are 330, 288 and 413 kJ mol -1 which of the following three Addition reactions are the most exothermic? 1 2 3