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TEST BANK## ORGANIC CHEMISTRY, 7TH
EDITION### BROWN, IVERSON, ANSLYN &
FOOTE
## Table of Contents
| Chapter | Topic | Questions |
|---------|-------|-----------|
| 1 | Covalent Bonding and Shapes of Molecules | 25 |
| 2 | Alkanes and Cycloalkanes | 20 |
| 3 | Stereoisomerism and Chirality | 25 |
| 4 | Acids and Bases | 15 |
| 5 | Alkenes: Bonding, Nomenclature, Reactions | 25 |
| 6 | Alkynes | 15 |
| 7 | Delocalized Electrons and Aromaticity | 20 |
| 8 | Substitution and Elimination Reactions | 25 |
| 9 | Alcohols, Ethers, and Epoxides | 20 |
| 10 | Aldehydes and Ketones | 25 |
| 11 | Carboxylic Acids and Derivatives | 25 |
| 12 | Enolate Chemistry | 15 |
| 13 | Amines | 15 |
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# Chapter 1: Covalent Bonding and Shapes of Molecules## (Questions
1–25)
**1.** What is the ground-state electron configuration of a carbon
atom?
A) 1s² 2s² 2p⁶
B) 1s² 2s² 2p²
C) 1s² 2s¹ 2p³
D) 1s² 2s² 2p⁴
E) 1s² 2s² 2p¹
**Answer:** B) 1s² 2s² 2p²
**Rationale:** Carbon has atomic number 6. Its ground-state electron
configuration is 1s² 2s² 2p². The 2p subshell has two electrons occupying
separate orbitals (Hund's rule) .
---
**2.** How many valence electrons does an atom of oxygen have?
A) 2
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B) 4
C) 6
D) 8
E) 10
**Answer:** C) 6
**Rationale:** Oxygen is in Group 6A of the periodic table and has 6
valence electrons (2s² 2p⁴). It needs two additional electrons to complete
its octet .
---
**3.** Which of the following correctly represents the Lewis dot
structure for methane (CH₄)?
A) Carbon with 4 bonds and no lone pairs
B) Carbon with 3 bonds and 1 lone pair
C) Carbon with 2 bonds and 2 lone pairs
D) Carbon with 4 bonds and 2 lone pairs
E) Carbon with 1 bond and 3 lone pairs
**Answer:** A) Carbon with 4 bonds and no lone pairs
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**Rationale:** Carbon has four valence electrons and forms four
covalent bonds in methane, achieving a complete octet with no lone
pairs on the central atom .
---
**4.** What is the hybridization of the carbon atom in methane (CH₄)?
A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²
**Answer:** C) sp³
**Rationale:** Methane has tetrahedral geometry with four equivalent
C-H bonds. The carbon atom uses sp³ hybrid orbitals formed by mixing
one 2s and three 2p orbitals .
---
TEST BANK## ORGANIC CHEMISTRY, 7TH
EDITION### BROWN, IVERSON, ANSLYN &
FOOTE
## Table of Contents
| Chapter | Topic | Questions |
|---------|-------|-----------|
| 1 | Covalent Bonding and Shapes of Molecules | 25 |
| 2 | Alkanes and Cycloalkanes | 20 |
| 3 | Stereoisomerism and Chirality | 25 |
| 4 | Acids and Bases | 15 |
| 5 | Alkenes: Bonding, Nomenclature, Reactions | 25 |
| 6 | Alkynes | 15 |
| 7 | Delocalized Electrons and Aromaticity | 20 |
| 8 | Substitution and Elimination Reactions | 25 |
| 9 | Alcohols, Ethers, and Epoxides | 20 |
| 10 | Aldehydes and Ketones | 25 |
| 11 | Carboxylic Acids and Derivatives | 25 |
| 12 | Enolate Chemistry | 15 |
| 13 | Amines | 15 |
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# Chapter 1: Covalent Bonding and Shapes of Molecules## (Questions
1–25)
**1.** What is the ground-state electron configuration of a carbon
atom?
A) 1s² 2s² 2p⁶
B) 1s² 2s² 2p²
C) 1s² 2s¹ 2p³
D) 1s² 2s² 2p⁴
E) 1s² 2s² 2p¹
**Answer:** B) 1s² 2s² 2p²
**Rationale:** Carbon has atomic number 6. Its ground-state electron
configuration is 1s² 2s² 2p². The 2p subshell has two electrons occupying
separate orbitals (Hund's rule) .
---
**2.** How many valence electrons does an atom of oxygen have?
A) 2
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B) 4
C) 6
D) 8
E) 10
**Answer:** C) 6
**Rationale:** Oxygen is in Group 6A of the periodic table and has 6
valence electrons (2s² 2p⁴). It needs two additional electrons to complete
its octet .
---
**3.** Which of the following correctly represents the Lewis dot
structure for methane (CH₄)?
A) Carbon with 4 bonds and no lone pairs
B) Carbon with 3 bonds and 1 lone pair
C) Carbon with 2 bonds and 2 lone pairs
D) Carbon with 4 bonds and 2 lone pairs
E) Carbon with 1 bond and 3 lone pairs
**Answer:** A) Carbon with 4 bonds and no lone pairs
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**Rationale:** Carbon has four valence electrons and forms four
covalent bonds in methane, achieving a complete octet with no lone
pairs on the central atom .
---
**4.** What is the hybridization of the carbon atom in methane (CH₄)?
A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²
**Answer:** C) sp³
**Rationale:** Methane has tetrahedral geometry with four equivalent
C-H bonds. The carbon atom uses sp³ hybrid orbitals formed by mixing
one 2s and three 2p orbitals .
---
