Question 1

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

Question 2

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

Question 3

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) B) and C)
G) All of the above

Question 4

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) A) and E)
G) A) and B)

Question 5

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

Question 6

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) B) and D)
G) A) and B)

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 D)
G) A) and E)

Question 8

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) A) and E)
G) None of the above

Question 9

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

Question 10

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) None of the above

Question 11

Which one of the following Lewis structures is definitely incorrect?

Accepted Answer

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

Question 12

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

Question 13

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) D) and E)

Question 14

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) A) and B)
G) None of the above

Question 15

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 16

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) A) and D)
G) None of the above

Question 17

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

Question 18

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

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

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) All of the above
G) C) and E)

Exam 10: The Shapes of Molecules

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

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

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

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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 AX4E will have a __________ molecular shape.

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

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

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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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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 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 AX2E2 will have a __________ molecular shape.

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

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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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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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Which one of the following Lewis structures is definitely incorrect?

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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 AX5 will have a __________ molecular shape.

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

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

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

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

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

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

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

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

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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 AX₃ will have a __________ molecular shape.

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

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