Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

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 C)
G) All of the above

Question 3

Considering all the bonds in a molecule with trigonal bipyramidal geometry, what are the bond angles present?

Accepted Answer

A)  120° only
B)  90° only
C)  180° only
D)  60° and 90° only
E)  90°, 120°, and 180°F) C) and D)
G) B) and C)

Question 4

In which one of the following species is the central atom (the first atom in the formula)  likely to violate the octet rule?

Accepted Answer

A)  BF 4 −
B)  XeO 3
C)  SiCl 4
D)  NH 3
E)  CH 2Cl 2F) All of the above
G) A) and E)

Question 5

Which one of the following Lewis structures is definitely incorrect?

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  EF) B) and D)
G) All of the above

Question 6

According to VSEPR theory, a molecule with the general formula AX5 will have a __________ molecular shape.

Accepted Answer

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

Question 7

Predict the ideal bond angles in IF2− using the molecular shape given by the VSEPR theory.

Accepted Answer

A)  60°
B)  90°
C)  109°
D)  120°
E)  180°F) A) and B)
G) A) and E)

Question 8

In the nitrate ion (NO3−) , nitrogen and oxygen are held together by

Accepted Answer

A)  ionic interactions.
B)  covalent bonds.
C)  dative bonds.
D)  electronegativity.
E)  network bonds.F) B) and E)
G) C) and D)

Question 9

According to VSEPR theory, a molecule with the general formula AX2E2 will have a __________ molecular shape.

Accepted Answer

A)  linear
B)  bent
C)  trigonal planar
D)  tetrahedral
E)  see-sawF) B) and E)
G) B) and D)

Question 10

According to VSEPR theory, a molecule with the general formula AX3 will have a __________ molecular shape.

Accepted Answer

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

Question 11

According to VSEPR theory, a molecule with the general formula AX4E will have a __________ molecular shape.

Accepted Answer

A)  bent
B)  see-saw
C)  trigonal planar
D)  T-shaped
E)  square planarF) C) and D)
G) A) and E)

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) A) and E)
G) C) and D)

Question 13

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) C) and D)
G) A) and E)

Question 14

Oxygen difluoride is a powerful oxidizing and fluorinating agent. Select its Lewis structure.

Accepted Answer

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

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 E)
G) C) and E)

Question 16

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

Accepted Answer

A)  Linear
B)  Trigonal planar
C)  Bent
D)  Tetrahedral
E)  Trigonal pyramidalF) A) and C)
G) C) and E)

Question 17

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) B) and E)
G) C) and E)

Question 18

The formal charges on Cl and O in the structure shown for the ClO− ion are, respectively − ion are, respectively   A) 0 and −1 B) −1 and 0 C) 1 and −2 D) −2 and 1 E) None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  0 and −1
B)  −1 and 0
C)  1 and −2
D)  −2 and 1
E)  None of these choices are correct.F) All of the above
G) None of the above

Question 19

List all possible molecular geometries (shapes)  for a nonpolar molecule with the formula AX4.

Accepted Answer

A)  tetrahedral
B)  see-saw
C)  square planar
D)  either tetrahedral or square planar
E)  any of the above shapesF) B) and D)
G) B) and C)

Question 20

What is the molecular symmetry around the carbons in CCl2CH2 as predicted by the VSEPR theory?

Accepted Answer

A)  linear
B)  Trigonal planar
C)  V-shaped
D)  Tetrahedral
E)  Trigonal pyramidalF) A) and D)
G) B) and C)

Exam 10: The Shapes of Molecules

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

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

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

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In the nitrate ion (NO3−) , nitrogen and oxygen are held together by

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

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Predict the ideal bond angles in IF2− using the molecular shape given by the VSEPR theory.

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

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What is the molecular symmetry around the carbons in CCl2CH2 as predicted by the VSEPR theory?

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

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List all possible molecular geometries (shapes) for a nonpolar molecule with the formula AX4.

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Considering all the bonds in a molecule with trigonal bipyramidal geometry, what are the bond angles present?

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Which one of the following Lewis structures is definitely incorrect?

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Oxygen difluoride is a powerful oxidizing and fluorinating agent. Select its Lewis structure.

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According to VSEPR theory, a molecule with the general formula AX5 will have a __________ molecular shape.

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The formal charges on Cl and O in the structure shown for the ClO− ion are, respectively

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

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In which one of the following species is the central atom (the first atom in the formula) likely to violate the octet rule?

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According to VSEPR theory, a molecule with the general formula AX3 will have a __________ molecular shape.

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According to VSEPR theory, a molecule with the general formula AX4E will have a __________ molecular shape.

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According to VSEPR theory, a molecule with the general formula AX2E2 will have a __________ molecular shape.

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In the nitrate ion (NO₃⁻) , nitrogen and oxygen are held together by

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According to VSEPR theory, a molecule with the general formula AX₄will have a __________ molecular shape.

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Predict the ideal bond angles in IF₂⁻ using the molecular shape given by the VSEPR theory.

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What is the molecular symmetry around the carbons in CCl₂CH₂as predicted by the VSEPR theory?

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List all possible molecular geometries (shapes) for a nonpolar molecule with the formula AX₄.

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According to VSEPR theory, a molecule with the general formula AX₅ will have a __________ molecular shape.

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The formal charges on Cl and O in the structure shown for the ClO⁻ion are, respectively

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

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According to VSEPR theory, a molecule with the general formula AX₃ will have a __________ molecular shape.

Correct Answer
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According to VSEPR theory, a molecule with the general formula AX₄E will have a __________ molecular shape.

Correct Answer
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According to VSEPR theory, a molecule with the general formula AX₂E₂will have a __________ molecular shape.

Correct Answer
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