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Test Bank for Brown's Introduction to Organic Chemistry, 1e (Global Edition), William Brown (All Chapters) 1 / 4

Chapter 1 - Covalent Bonding and Shapes of Molecules 1

Package Title: Brown/Poon Test Bank

Course Title: Brown/Poon, Global Edition

Chapter Number: 1

Question type: Multiple Choice

Section 1.1

Difficulty Level: Easy

• Which is the electronic configuration that describes Mg

2+ ?

• 1s

2 , 2s 2

• 1s

2 , 2s 2 , 2p 6

• 1s

2 , 2s 2 , 2p 6 , 3s 2

• 1s

2 , 2s 2 , 2p 6 , 3s 2 , 3p 6

Answer: b

Section 1.1

Difficulty Level: Easy

• Which is the electronic configuration that describes a neutral carbon atom?

• 1s

2 , 2s 2 , 2p 5

• 1s

2 , 2s 2 , 2p 6 , 3s 2

• 1s

2 , 2s 2 , 2p 2

• 1s

2 , 2s 2 , 2p 6

Answer: c

Section 1.1

Difficulty Level: Easy

• Which atom is described by the electronic configuration 1s

2 2s 2 2p 6 3s 2 3p 3 ?

a) Mg

b) Al

c) Si

d) P

Answer: d

Section 1.1

Difficulty Level: Easy

• Which atom is described by the electron configuration 1s

2 2s 2 2p 6 3s 2 3p 5 ?

a) S

b) Se

c) Cl

d) Br

Answer: c

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Chapter 1 - Covalent Bonding and Shapes of Molecules 2

Section 1.1

Difficulty Level: Easy

• A neutral carbon has how many valence electrons?

• 2
• 4
• 6
• 8

Answer: b

Section 1.1

Difficulty Level: Easy

• A neutral oxygen has how many valence electrons?

• 4
• 5
• 6
• 7

Answer: c

Section 1.1

Difficulty Level: Easy

• A neutral nitrogen has how many valence electrons?

• 4
• 5
• 6
• 7

Answer: b

Section 1.1

Difficulty Level: Medium

• Which statement about orbitals is false?

a) Orbitals are regions of space where electrons are found.

b) Orbitals may contain up to two electrons each.

c) Orbitals are filled in order of decreasing energy.

d) Orbitals of equivalent energy are half filled before adding two electrons to any one of them.

Answer: c

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Chapter 1 - Covalent Bonding and Shapes of Molecules 3

Section 1.2

Difficulty Level: Easy

• Which atom is described by the Lewis structure A ?

a) C

b) P

c) Se

d) I

Answer: c

Section 1.2

Difficulty Level: Easy

• Which atom is described by the Lewis structure A ?

a) C

b) P

c) Se

d) I

Answer: a

Section 1.2

Difficulty Level: Medium

• Which Lewis structures are correct?

HINT: Perform a total valence count and check formal charges.

a) I

b) II

c) III

d) IV

Answer: a

H CH OH H CC H H H

H OOHH

O

CO OHH

I IIIIIIV

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