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Test Bank for Organic Chemistry Mechanistic Patterns 1st Edition by Ogilvie, Ackroyd, Browning, Deslongchamps, Sauer ISBN 9780176702717 Chapter 1-20 CHAPTER 1 - Carbon and Its Compounds 2-
1. Which of the following represents the ground state electron configuration for a O ion? a. 1s22s22p4 b. 1s22s22p2 c. 1s22s22p6 d. 2s22p4 ANSWER: c 2. How many valence electrons does a nitrogen atom contain? a. 2 b. 3 c. 5 d. 7 ANSWER: c 2-
3. How many valence electrons does an O ion contain? a. 2 b. 6 c. 8 d. 10 ANSWER: c 4. What is the Lewis structure of a compound that has the formula of CCl3 and contains 24 valence electrons? a.
b.
c.
d.
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ANSWER: d 5. How many bonded and non-bonded electrons does a molecule with no formal charges and the formula
C2H4O2 contain? a. 4 bonded, 4 non-bonded b. 7 bonded. 4 non-bonded c. 7 bonded, 5 non-bonded d. 4 bonded, 7 non-bonded ANSWER: b
Figure 1
6. Referring to Figure 1, what is the formal charge of the oxygen atom at I? a. +1 b. 0 c. -1 d. -2 ANSWER: b 7. Referring to Figure 1, what is the formal charge of the oxygen atom at II? a. +1 b. 0 c. -1 d. -2 ANSWER: c 8. Referring to Figure 1, what is the formal charge of the oxygen atom at III? a. +1 b. 0 c. -1 d. -2 ANSWER: a 9. What best represents a C-H bond in CH4? a. s-sp3 orbital overlap Copyright Cengage Learning. Powered by Cognero.
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b. sp3-sp3 orbital overlap c. s-s orbital overlap d. p-p orbital overlap ANSWER: a 10. What best represents the C-C bond in C2H6? a. s-sp3 orbital overlap b. sp3-sp3 orbital overlap c. s-s orbital overlap d. p-p orbital overlap ANSWER: b
Figure 2 The following questions refer to the structure of heroin (shown below).
11. Referring to Figure 2, what is the hybridization of the nitrogen atom? a. p b. sp c. sp2 d. sp3 ANSWER: d 12. Referring to Figure 2, what is the geometry of the carbon atom shown at I? a. bent b. trigonal planar c. tetrahedral d. trigonal pyramidal ANSWER: b 13. Referring to Figure 2, what is the geometry of the carbon atom shown at II? a. bent b. trigonal planar Copyright Cengage Learning. Powered by Cognero.
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c. tetrahedral d. trigonal pyramidal ANSWER: c 14. Referring to Figure 2, what is the hybridization of the carbon atom at I? a. p b. sp c. sp2 d. sp3 ANSWER: c 15. Referring to Figure 2, what is the hybridization of the carbon atom at II? a. p b. sp c. sp2 d. sp3 ANSWER: d 2
2
6
2
4
16. Which element or ion has the following electron configuration: 1s 2s 2p 3s 3s ? a. S b. O c. Ar d. Si ANSWER: a 17. How many orientations exist for a s orbital? a. 1 b. 2 c. 3 d. 4 ANSWER: a 18. How many orientations exist for a p orbital? a. 1 b. 2 c. 3 d. 4 ANSWER: c 3
19. How many orientations exist for a sp orbital? a. 1 Copyright Cengage Learning. Powered by Cognero.
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b. 2 c. 3 d. 4 ANSWER: d 20. How many orientations exist for an sp orbital? a. 1 b. 2 c. 3 d. 4 ANSWER: b 2
21. What is the geometry around an sp hybridized carbon? a. linear b. trigonal planar c. tetrahedral d. trigonal pyramidal ANSWER: b 22. What is the geometry around an sp hybridized carbon? a. linear b. trigonal planar c. tetrahedral d. trigonal pyramidal ANSWER: a 23. How many bonds does oxygen make while remaining neutral? a. 1 b. 2 c. 3 d. 4 ANSWER: b 24. How many hydrogens does the following line structure contain?
a. 1 b. 10 c. 19 Copyright Cengage Learning. Powered by Cognero.
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