Deck 1: Bonding and Isomerism

Question 1

Given the following electronegativity values, predict the most polar covalent bond below:

A) -F
B) C-Cl
C) C-O
D) C-H
E) C-C

Answer 1

-F

Question 2

The structural formula for (CH₃)₂C(CH₂CH₃)₂ is

A)
B)
C)
D)
E)

Answer 2

Question 3

Which of the following abbreviated structural formulas is NOT an isomer of the others?

A)
B)
C)
D)
E)

Answer 3

Question 4

Which of the following Lewis Structures for ozone (O₃) is incorrect?

A)
B)
C)
D)structures (A) and (B) are incorrect
E)none of the above structures are incorrect

Question 5

Which of the following molecules are structural isomers?

A) 1, 2 and 3
B) 1, 3 and 4
C) 2, 3 and 5
D) 1, 3 and 5
E) 2 and 3

Question 6

Which of the following elements is the most electronegative?

A) O
B) S
C) Se
D) Te
E) Po

Question 7

If the Cl-Cl bond length is 1.98Å and the C-C bond length is 1.54Å, what would you expect the bond length of Cl-C to be?

A) 0.74Å
B) 1.54Å
C) 1.76Å
D) 1.98Å
E) 3.52Å

Question 8

Which of the following structural formulas does not have the molecular formula C₆H₁₄?

A)
B)
C)
D)
E)

Question 9

What is the most electropositive element?

A) Li
B) Be
C) B
D) C
E) N

Question 10

Which of the following would you expect to have polar covalent bonds?

A) MgF₂
B) N₂
C) F₂
D) NF₃
E) NaF

Question 11

The structural formula has the molecular formula:

A) C₇H₁₆
B) C₆H₁₄
C) C₇H₁₄
D) C₆H₁₂
E) C₇H₁₀

Question 12

Which of the following structural formulas represents a structural isomer of CH₃CH₂CH₂CH₂CH₃?

A)
B)
C)
D)
E)

Question 13

Which molecule has nonpolar covalent bonds?

A) NO
B) N₂
C) BCl₃
D) HF
E) CCl₄

Question 14

Which of the following abbreviated structural formulas represents a structural isomer of CH₃CH₂CH₂CH₂CH₃?

A)
B)
C)
D)
E)

Question 15

Which of the following would you expect to have ionic bonds?

A) HBr
B) CO
C) ICl
D) CsF
E) NF₃

Question 16

The number of possible acyclic hydrocarbons with the molecular formula C₄H₆ is

A) 2
B) 3
C) 4
D) 5
E) 6

Question 17

The number of electrons in the valence shell of sulfur is:

A) 2
B) 3
C) 4
D) 5
E) 6

Question 18

Which of the following molecules are structural isomers?

A) 1, 2, and 4
B) 1, 2, and 3
C) 1, 3, and 4
D) 2, 3, and 4
E) 3 and 4

Question 19

Which of the following elements has three electrons in the valence (outer) shell?

A) C
B) B
C) S
D) F
E) N

Question 20

The most electronegative elements in the periodic table are generally found

A) toward the left in a horizontal row and toward the top in a column.
B) toward the right in a horizontal row and toward the top in a column.
C) toward the left in a horizontal row and toward the bottom in a column.
D) toward the right in a horizontal row and toward the bottom in a column.
E) distributed randomly throughout the table.

Question 21

Which of the following molecules is heterocyclic?

A)
B)
C)
D)
E)

Question 22

Which of the following molecules can be classified as an amide?

A)
B)
C)
D)
E) Answers A and D

Question 23

The curved arrows in the resonance structure for the acetate ion shown below indicate the following alternative resonance structure for the acetate ion:

A)
B)
C)
D)
E)

Question 24

The formal charges in the perchlorate ion are:

A) -1 on each O and +3 on the Cl.
B) 0 on each O and -1 on the Cl.
C) -1 on each O and +4 on the Cl.
D) -1/4 on each O and 0 on the Cl.
E) +1 on each O and -1 on the Cl.

Question 25

What is the percent s character in an sp² hybridized orbital?

A) 25%
B) 33%
C) 50%
D) 67%
E) 75%

Question 26

What is the formal charge of N in HNO₃, as seen below?

A) +1
B) +2
C) 0
D) -1
E) -2

Question 27

The formal charges in the complex are:

A) 0 on each H, +1 on N, and -1 on B.
B) +1 on each H, +1 on N, and -1 on B.
C) 0 on each H, -1 on N, and +1 on B.
D) 0 on each H, 0 on N, and 0 on B.
E) -1 on each H, +3 on N, and +3 on B.

Question 28

For carbon monoxide, formal charge of:

A) +1
B) -1
C) 0
D) -2
E) +2

Question 29

The maximum number of electrons that a molecular orbital can contain is:

A) 1
B) 2
C) 3
D) 4
E) 5

Question 30

For carbon monoxide, formal charge of:

A) +1
B) -1
C) 0
D) -2
E) +2

Question 31

The structural formula has the molecular formula:

A) C₇H₁₆
B) C₆H₁₄
C) C₇H₁₄
D) C₆H₁₂
E) C₇H₁₀

Question 32

Which of the following molecules is acyclic?

A)
B)
C)
D)
E)

Question 33

The approximate H-C-H bond angle in methane is:

A) 60°
B) 90°
C) 109.5°
D) 120°
E) 180°

Question 34

Which of the following structures is a resonance structure of :

A)
B)
C)
D)
E)

Question 35

Which of the following molecules contain the same functional group?

A) 2 and 3
B) 1, 2 and 4
C) 2 and 4
D) 1 and 2
E) 1 and 4

Question 36

The Lewis structure of methane is The shape of the methane can be described as a

A) square planar
B) trigonal planar
C) trigonal pyramidal
D) tetrahedral
E) square pyramidal

Question 37

Which of the following molecules contain the same functional group?

A) 1, 2 and 3
B) 1, 3 and 4
C) 1 and 2
D) 2 and 4
E) 3 and 4

Question 38

The structural formula for (CH₃CH₂)₂CHCH₂CH(CH₃)₂ is

A) C₉H₂₀
B)
C)
D)
E)

Question 39

The structural formula has the molecular formula:

A) C₁₀H₁₆
B) C₉H₁₆
C) C₁₁H₂₂
D) C₉H₁₄
E) C₁₀H₁₈

Question 40

Which of the following structural formulas has the molecular formula C₆H₁₂?

A) 2 and 3
B) 1 and 4
C) 1, 4, and 5
D) 1 and 2
E) 4 and 5