Copyright 2017 Pearson Education, Inc.

1 Copyright © 2017 Pearson Education, Inc.Essential Organic Chemistry, 3e (Bruice)

Chapter 1 Remembering General Chemistry: Electronic Structure and Bonding

1) What element is represented by the following electronic configuration?

• s2 2s2 2p5
• F
• C
• N
• Al
• O

Answer: A

Diff: 2

Section: 1-2

Objective: G2, G3

LO: 1.2

2) How many unpaired electrons are present in the electronic configuation of carbon (atomic number = 6)?

• none
• one
• two
• three
• four

Answer: C

Diff: 2

Section: 1-2

Objective: G2, G3

LO: 1.2

3) Which of the following is the electronic configuration of the element Fe?

• 1s2 2s2 2p6 3s2 3p6 4s2 3d6
• 1s2 2s2 2p6 3s2 3p8 3d6
• 1s2 2s2 2p8 3s2 3p6 4s2 3d6
• 1s2 2s2 2p6 3s2 3p6 4s2 4d6
• 1s2 2s2 2p6 3s2 3p6 4s2 4p6

Answer: A

Diff: 2

Section: 1-2

Objective: G2, G3

LO: 1.2

(Test Bank all Chapters) 1 / 4

2 Copyright © 2017 Pearson Education, Inc.4) The atomic number of boron is 5. The correct electronic configuration of boron is ________.

• 1s2 2s3
• 1s2 2p3
• 1s2 2s2 2p1
• 2s2 2p3
• 1s2 2s2 3s1

Answer: C

Diff: 2

Section: 1-2

Objective: G2, G3

LO: 1.2

5) Which of the following statements correctly describes the third shell that surrounds the nucleus of an atom?

• The third shell contains only s and p atomic orbitals.
• The maximum number of electrons that can occupy the third shell is 18.
• The total number of atomic orbitals present in the third shell is 16.
• The third shell can contain f orbitals.
• All third shell elements must have d electrons.

Answer: B

Diff: 2

Section: 1-2

Objective: G2, G3

LO: 1.2

6) What is the electronic configuration of N3-?

• 1s2 2s2
• 1s2 2s2 2p3
• 1s2 2s2 2p4
• 1s2 2s2 2p6
• 1s2 2s2 2p6 3s1

Answer: D

Diff: 2

Section: 1-2

Objective: G2, G3

LO: 1.2

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3 Copyright © 2017 Pearson Education, Inc.7) Which of the following atoms is the least electronegative?

• P
• Na
• I
• B
• O

Answer: B

Diff: 2

Section: 1-3

Objective: G2, G3

LO: 1.4

8) Which of the following compounds have bonds that are predominantly ionic?

• KCl

B) CF4

C) NH3

• both A and B
• both B and C

Answer: A

Diff: 2

Section: 1-3

Objective: G2, G3

LO: 1.3

9) What type of bonding is found in CH3CH2CH2CH2CH2CH3?

• ionic
• hydrogen
• covalent
• polar

Answer: C

Diff: 2

Section: 1-3

Objective: G2, G3

LO: 1.3

10) Which of the following contains polar covalent bonds?

A) NH3

• Na2O
• H2
• KF
• both A and C

Answer: A

Diff: 2

Section: 1-3

Objective: G2, G3

LO: 1.3 3 / 4

4 Copyright © 2017 Pearson Education, Inc.

11) Which of the following covalent bonds has the largest dipole moment?

A) C-C

B) C-H

C) C-O

D) H-N

E) H-F

Answer: E

Diff: 2

Section: 1-3

Objective: G2, G3

LO: 1.3

12) How many nonbonding pairs of electrons are in H2NOH?

• 0
• 1
• 2
• 3
• 4

Answer: D

Diff: 3

Section: 1-4

Objective: G2, G3

LO: 1.4

13) The compound CH3NH2, contains a C-N bond. Which of the following best describes the charge on the nitrogen atom in this compound?

• +1
• slightly positive
• uncharged
• slightly negative
• -1

Answer: D

Diff: 2

Section: 1-4

Objective: G2, G3

LO: 1.4

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