Question 1

Which of the following atoms can expand its valence shell when bonding?

Accepted Answer

A)   N
B)   C
C)   O
D)   P
E)   AlF) A) and D)
G) A) and C)

Question 2

Which of the following has no net dipole moment?

Accepted Answer

A)   N2O
B)   NF3
C)   H2Se
D)   TeO3
E)   CH3ClF) A) and D)
G) A) and C)

Question 3

In order for a noncyclic triatomic molecule to be bent, VSEPR theory requires that there must be two lone pairs on the central atom.

Accepted Answer

A) True 
 B)False

Question 4

In which one of the following structures does the central atom have a formal charge of +2?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) A) and B)
G) A) and C)

Question 5

Which one of the following molecules does not have a dipole moment?

Accepted Answer

A)   CS2
B)   H2S
C)   CH2Cl2
D)   PH3
E)   CH2OF) B) and E)
G) A) and B)

Question 6

Select the Lewis structure in which formal charges are minimized for the periodate anion, IO4-.

Accepted Answer

A)   4-. 
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C)   4-. 
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D)   4-. 
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E)   4-. 
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G) D) and E)

Question 7

Boron never achieves an octet in any of its compounds.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following elements would you expect most likely to be a central atom with an expanded valence shell?

Accepted Answer

A)   Ne
B)   P
C)   N
D)   C
E)   BF) B) and D)
G) C) and D)

Question 9

Which one of the following Lewis structures is definitely incorrect?

Accepted Answer

A)   
B)   
C)   
D)   
E)  F) None of the above
G) B) and D)

Question 10

A molecule that contains polar bonds will always have a dipole moment.

Accepted Answer

A) True 
 B)False

Question 11

What is the molecular shape of NO2- as predicted by the VSEPR theory?

Accepted Answer

A)   linear
B)   trigonal planar
C)   bent
D)   tetrahedral
E)   resonantF) B) and D)
G) A) and B)

Question 12

According to VSEPR theory, a molecule with the general formula AX4 will have a ______ molecular shape.

Accepted Answer

A)   bent
B)   trigonal planar
C)   trigonal pyramidal
D)   square planar
E)   tetrahedralF) C) and D)
G) B) and D)

Question 13

What is the molecular shape of BCl3 as predicted by the VSEPR theory?

Accepted Answer

A)   linear
B)   trigonal planar
C)   bent
D)   tetrahedral
E)   trigonal pyramidalF) All of the above
G) C) and D)

Question 14

Predict the actual bond angle in SeCl2 using the VSEPR theory.

Accepted Answer

A)   more than 120°
B)   between 109° and 120°
C)   between 90° and 109°
D)   exactly 90°
E)   less than 90°F) B) and C)
G) B) and D) C

Question 15

What is the molecular shape of ClO3F as predicted by the VSEPR theory? 3F as predicted by the VSEPR theory?   A)  trigonal pyramidal B)  square planar C)  square pyramidal D)  tetrahedral E)  octahedral" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   trigonal pyramidal
B)   square planar
C)   square pyramidal
D)   tetrahedral
E)   octahedralF) B) and C)
G) C) and E)

Question 16

Hydrazine, N2H4, is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure.

Accepted Answer

A)   2H4, is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure. 
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C)     
D)     
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C)   2H4, is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure. 
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B)     
C)     
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D)   2H4, is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure. 
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E)   None of these choices are correct.F) B) and C)
G) None of the above C

Question 17

Predict the ideal bond angles around carbon in C2I2 using the molecular shape given by the VSEPR theory.

Accepted Answer

A)   90°
B)   109°
C)   120°
D)   180°
E)   None of these choices are correct.F) None of the above
G) D) and E)

Question 18

What is the molecular shape of HOF as predicted by the VSEPR theory?

Accepted Answer

A)   trigonal pyramidal
B)   trigonal
C)   tetrahedral
D)   linear
E)   bentF) All of the above
G) B) and E)

Question 19

Thionyl chloride is used as an oxidizing and chlorinating agent in organic chemistry. Select the best Lewis structure for SOCl2.

Accepted Answer

A)   2. 
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C)   2. 
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D)   2. 
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E)   None of these choices are correct.F) B) and E)
G) B) and D) B

Question 20

According to VSEPR theory, a molecule with the general formula AX3E2 will have a _____ molecular shape.

Accepted Answer

A)   trigonal pyramidal
B)   trigonal bipyramidal
C)   trigonal planar
D)   T-shaped
E)   see-sawF) A) and D)
G) A) and B)

Exam 10: The Shapes of Molecules

Which of the following atoms can expand its valence shell when bonding?

Correct AnswerverifiedShow Answer

Which of the following has no net dipole moment?

Correct AnswerverifiedShow Answer

In order for a noncyclic triatomic molecule to be bent, VSEPR theory requires that there must be two lone pairs on the central atom.

Correct AnswerverifiedShow Answer

In which one of the following structures does the central atom have a formal charge of +2?

Correct AnswerverifiedShow Answer

Which one of the following molecules does not have a dipole moment?

Correct AnswerverifiedShow Answer

Select the Lewis structure in which formal charges are minimized for the periodate anion, IO4-.

Correct AnswerverifiedShow Answer

Boron never achieves an octet in any of its compounds.

Correct AnswerverifiedShow Answer

Which of the following elements would you expect most likely to be a central atom with an expanded valence shell?

Correct AnswerverifiedShow Answer

Which one of the following Lewis structures is definitely incorrect?

Correct AnswerverifiedShow Answer

A molecule that contains polar bonds will always have a dipole moment.

Correct AnswerverifiedShow Answer

What is the molecular shape of NO2- as predicted by the VSEPR theory?

Correct AnswerverifiedShow Answer

According to VSEPR theory, a molecule with the general formula AX4 will have a ______ molecular shape.

Correct AnswerverifiedShow Answer

What is the molecular shape of BCl3 as predicted by the VSEPR theory?

Correct AnswerverifiedShow Answer

Predict the actual bond angle in SeCl2 using the VSEPR theory.

Correct AnswerverifiedC

What is the molecular shape of ClO3F as predicted by the VSEPR theory?

Correct AnswerverifiedShow Answer

Hydrazine, N2H4, is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure.

Correct AnswerverifiedC

Predict the ideal bond angles around carbon in C2I2 using the molecular shape given by the VSEPR theory.

Correct AnswerverifiedShow Answer

What is the molecular shape of HOF as predicted by the VSEPR theory?

Correct AnswerverifiedShow Answer

Thionyl chloride is used as an oxidizing and chlorinating agent in organic chemistry. Select the best Lewis structure for SOCl2.

Correct AnswerverifiedB

According to VSEPR theory, a molecule with the general formula AX3E2 will have a _____ molecular shape.

Correct AnswerverifiedShow Answer

Correct Answer
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Select the Lewis structure in which formal charges are minimized for the periodate anion, IO₄^-.

Correct Answer
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What is the molecular shape of NO₂^- as predicted by the VSEPR theory?

Correct Answer
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According to VSEPR theory, a molecule with the general formula AX₄ will have a ______ molecular shape.

Correct Answer
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What is the molecular shape of BCl₃ as predicted by the VSEPR theory?

Correct Answer
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Predict the actual bond angle in SeCl₂ using the VSEPR theory.

Correct Answer
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C

What is the molecular shape of ClO₃F as predicted by the VSEPR theory?

Correct Answer
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Hydrazine, N₂H₄, is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure.

Correct Answer
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C

Predict the ideal bond angles around carbon in C₂I₂ using the molecular shape given by the VSEPR theory.

Correct Answer
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Correct Answer
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Thionyl chloride is used as an oxidizing and chlorinating agent in organic chemistry. Select the best Lewis structure for SOCl₂.

Correct Answer
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B

According to VSEPR theory, a molecule with the general formula AX₃E₂ will have a _____ molecular shape.

Correct Answer
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