Question 1

How many carbon-carbon sigma bonds are in the molecule shown?

Accepted Answer

A)  1
B)  2
C)  3
D)  4E) All of the above
F) None of the above

Question 2

Which carbon(s) in the following molecule is (are) sp hybridized?

Accepted Answer

A)  carbon 1
B)  carbon 2
C)  carbons 1, 3
D)  carbons 4
E)  carbons 4, 5F) C) and D)
G) A) and B)

Question 3

The lone-pair electrons of the methyl anion occupy a(n) ________ orbital.

Accepted Answer

A)  s
B)  p
C)  sp
D)  sp2
E)  sp3F) D) and E)
G) B) and D)

Question 4

BF3 has a dipole moment of zero. Propose a structure for BF3 that is consistent with this information.

Accepted Answer

BF₃ is trig...

Question 5

Identify the hybridization of carbon in H2CO.

Accepted Answer

A)  sp
B)  sp2
C)  sp3
D)  sp4
E)  s3pF) A) and B)
G) A) and C)

Question 6

Each lone pair of electrons on the O atom in methanol (CH3OH) occupies a(n) ________ orbital.

Accepted Answer

A)  s
B)  p
C)  sp
D)  sp2
E)  sp3F) C) and D)
G) A) and E)

Question 7

Which bond in the following molecule is the shortest?

Accepted Answer

A)  bond 1
B)  bond 2
C)  bond 3
D)  bond 4
E)  bond 5F) C) and D)
G) A) and D)

Question 8

Give the formal charge on nitrogen in NH4.

Accepted Answer

A)  -2
B)  -1
C)  0
D)  +1
E)  +2F) B) and C)
G) D) and E)

Question 9

Draw a Lewis structure for the molecule given and show all formal charges.
CH2CO

Accepted Answer

Question 10

Provide the mathematical equation for the dipole moment of a bond, and identify the variables.

Accepted Answer

μ = e × d, where μ is the bond...

Question 11

Give the hybridization, shape, and bond angle for each carbon in CH3CN.

Accepted Answer

CH₃- sp³, te...

Question 12

Give the shape of the methyl radical.

Accepted Answer

A)  trigonal pyramidal
B)  tetrahedral
C)  bent
D)  linear
E)  trigonal planarF) D) and E)
G) B) and E)

Question 13

What kind of molecular orbital (σ, σ*, π, or π*)results when the two atomic orbitals shown below interact in the manner indicated?

Accepted Answer

The answer of What kind of molecular orbital (σ, σ*,...

Question 14

Which of the following is closest to the C-O-C bond angle in CH3-O-CH3?

Accepted Answer

A)  180°
B)  120°
C)  109.5°
D)  90°
E)  160°F) B) and D)
G) C) and D)

Question 15

Why is the C-H bond in ethene (H2C  CH2)shorter and stronger than the C-H bond in ethane (CH3CH3)?

Accepted Answer

The length and strength of a C-H bond de...

Question 16

What kind of molecular orbital (σ, σ*, π, or π*)results when the two atomic orbitals shown below interact in the manner indicated?

Accepted Answer

The answer of What kind of molecular orbital (σ, σ*,...

Question 17

Give the number of nonbonding pairs of electrons in H2NOH.

Accepted Answer

A)  0
B)  1
C)  2
D)  3
E)  4F) A) and B)
G) A) and E)

Question 18

Expand the condensed structure below to show the covalent bonds and the lone-pair electrons.
(CH3)2CHCH2CHO

Accepted Answer

Question 19

Give the hybridizations of the carbons, from left to right, in CH3CH  CHCl.

Accepted Answer

Question 20

Which of the following is an sp2 hybridized carbon?

Accepted Answer

A)   2 hybridized carbon? 
A)     
B)  ∙ CH3 
C)     
D)  A and B 
E)  A, B and C" class="answers-bank-image d-inline" rel="preload" >
B)  ∙ CH3
C)   2 hybridized carbon? 
A)     
B)  ∙ CH3 
C)     
D)  A and B 
E)  A, B and C" class="answers-bank-image d-inline" rel="preload" >
D)  A and B
E)  A, B and CF) B) and E)
G) B) and C)

Exam 1: Remembering General Chemistry: Electronic Structure and Bonding

Give the shape of the methyl radical.

Correct AnswerverifiedShow Answer

Which of the following is an sp2 hybridized carbon?

Correct AnswerverifiedShow Answer

Give the number of nonbonding pairs of electrons in H2NOH.

Correct AnswerverifiedShow Answer

Each lone pair of electrons on the O atom in methanol (CH3OH) occupies a(n) ________ orbital.

Correct AnswerverifiedShow Answer

BF3 has a dipole moment of zero. Propose a structure for BF3 that is consistent with this information.

Correct AnswerverifiedBF3 is trig...View AnswerShow Answer

What kind of molecular orbital (σ, σ*, π, or π*)results when the two atomic orbitals shown below interact in the manner indicated?

Correct AnswerverifiedShow Answer

Why is the C-H bond in ethene (H2C CH2)shorter and stronger than the C-H bond in ethane (CH3CH3)?

Correct AnswerverifiedThe length and strength of a C-H bond de...View AnswerShow Answer

Expand the condensed structure below to show the covalent bonds and the lone-pair electrons. (CH3)2CHCH2CHO

Correct AnswerverifiedShow Answer

Which of the following is closest to the C-O-C bond angle in CH3-O-CH3?

Correct AnswerverifiedShow Answer

Give the hybridizations of the carbons, from left to right, in CH3CH CHCl.

Correct AnswerverifiedShow Answer

Which carbon(s) in the following molecule is (are) sp hybridized?

Correct AnswerverifiedShow Answer

Draw a Lewis structure for the molecule given and show all formal charges. CH2CO

Correct AnswerverifiedShow Answer

How many carbon-carbon sigma bonds are in the molecule shown?

Correct AnswerverifiedShow Answer

Provide the mathematical equation for the dipole moment of a bond, and identify the variables.

Correct Answerverifiedμ = e × d, where μ is the bond...View AnswerShow Answer

Identify the hybridization of carbon in H2CO.

Correct AnswerverifiedShow Answer

Give the hybridization, shape, and bond angle for each carbon in CH3CN.

Correct AnswerverifiedCH3 - sp3, te...View AnswerShow Answer

Give the formal charge on nitrogen in NH4.

Correct AnswerverifiedShow Answer

The lone-pair electrons of the methyl anion occupy a(n) ________ orbital.

Correct AnswerverifiedShow Answer

What kind of molecular orbital (σ, σ*, π, or π*)results when the two atomic orbitals shown below interact in the manner indicated?

Correct AnswerverifiedShow Answer

Which bond in the following molecule is the shortest?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Which of the following is an sp² hybridized carbon?

Correct Answer
verified

Give the number of nonbonding pairs of electrons in H₂NOH.

Correct Answer
verified

Each lone pair of electrons on the O atom in methanol (CH₃OH) occupies a(n) ________ orbital.

Correct Answer
verified

BF₃ has a dipole moment of zero. Propose a structure for BF₃ that is consistent with this information.

Correct Answer
verified
BF₃ is trig...
View Answer

What kind of molecular orbital (σ, σ, π, or π)results when the two atomic orbitals shown below interact in the manner indicated?

Correct Answer
verified

Why is the C-H bond in ethene (H₂C CH₂)shorter and stronger than the C-H bond in ethane (CH₃CH₃)?

Correct Answer
verified
The length and strength of a C-H bond de...
View Answer

Expand the condensed structure below to show the covalent bonds and the lone-pair electrons. (CH₃)₂CHCH₂CHO

Correct Answer
verified

Which of the following is closest to the C-O-C bond angle in CH₃-O-CH₃?

Correct Answer
verified

Give the hybridizations of the carbons, from left to right, in CH₃CH CHCl.

Correct Answer
verified

Correct Answer
verified

Draw a Lewis structure for the molecule given and show all formal charges. CH₂CO

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
μ = e × d, where μ is the bond...
View Answer

Identify the hybridization of carbon in H₂CO.

Correct Answer
verified

Give the hybridization, shape, and bond angle for each carbon in CH₃CN.

Correct Answer
verified
CH₃- sp³, te...
View Answer

Give the formal charge on nitrogen in NH₄.

Correct Answer
verified

Correct Answer
verified

What kind of molecular orbital (σ, σ, π, or π)results when the two atomic orbitals shown below interact in the manner indicated?

Correct Answer
verified

Correct Answer
verified