Organic Chemistry, Janice Smith Test Bank

Chapter 1
1. Which is the most electronegative atom in the compound below?
OH Br N H

A) Carbon Ans: C

B) Nitrogen

C) Oxygen

D) Bromine

2. Which of the following correctly describes the electrons of a carbon atom in its ground state? A) 3 s electrons; 3 p electrons B) 2 1s electrons; 4 2p electrons C) 2 1s electrons; 2 2s electrons; 2 2p electrons D) 2 1s electrons; 2 2s electrons; 4 2p electrons E) None of these choices is correct. Ans: C 3. Which of the following statements correctly describes the typical bonding of carbon, nitrogen, and oxygen in organic molecules? A) Carbon participates in 4 covalent bonds, oxygen participates in 2 covalent bonds and nitrogen participates in 5 covalent bonds. B) Carbon participates in 3 covalent bonds, oxygen participates in 2 covalent bonds and nitrogen participates in 5 covalent bonds. C) Carbon participates in 4 covalent bonds, oxygen participates in 3 covalent bonds and nitrogen participates in 3 covalent bonds. D) Carbon participates in 3 covalent bonds, oxygen participates in 3 covalent bonds and nitrogen participates in 5 covalent bonds. E) Carbon participates in 4 covalent bonds, oxygen participates in 2 covalent bonds and nitrogen participates in 3 covalent bonds. Ans: E 4. Which is not an acceptable Lewis structure for the anion (CH2NCO)–?
a. H C N C O H b. H C N C O H c. H N d. O H N

C H

C

C H

C

O

A) a B) b Ans: C

C) c

D) d

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5. Which of the following is (are) valid Lewis structure(s) for the anion (HCONCH3) –?
O H H a. C C H N H O H H C C H N H O H H C H N H

b.

c.

d. a and b

e. a, b, and c

A) a B) b Ans: D

C) c

D) d

E) e

6. Which of the following is (are) valid Lewis structure(s) for the anion (CH2NO2)–? Assume the atoms are arranged as drawn.
a. H O C N H O H O C N H O H O C N H O

b.

c.

d. a and b

e. a, b, and c

A) a B) b Ans: E

C) c

D) d

E) e

7. Which is the appropriate conversion of CH3CHClCH2CH(CH3)2 to a