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1
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
(Introduction to Organic Chemistry 6e William Brown, Thomas Poon) (Test Bank all Chapters) 1 / 4
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
- / 4
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.
H CH OH H CC H H H
H OOHH
O
CO OHH
I IIIIIIV
a) I
b) II
c) III
d) IV
Answer: a
- / 4
Chapter 1 - Covalent Bonding and Shapes of Molecules 4
Sections 1.2, 1.7
Difficulty Level: Medium
- Which Lewis structures are correct?
HINT: Perform a total valence count and check formal charges.
a) I, II
b) II, IV
c) III, IV
d) I, III
Answer: c
Section 1.2
Difficulty Level: Medium
- Which functional groups have correct Lewis structures?
CH 3 CCH 3 CH 3 OH CO CH 3 CH 3 CH 3C O OH
IIIIII
a) I, II
b) II, III
c) I, II, III
d) I, III
Answer: d
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