Question 1

Determine the electron geometry (eg) and molecular geometry (mg) of CO32⁻.

Accepted Answer

A)  eg = tetrahedral,mg = tetrahedral
B)  eg = tetrahedral,mg = trigonal pyramidal
C)  eg = trigonal planar,mg = bent
D)  eg = trigonal planar,mg = trigonal planar
E)  eg = tetrahedral,mg = trigonal planar

Question 2

Using the VSEPR model,the electron-domain geometry of the central atom in AlCl3 is ________.

Accepted Answer

A)  linear
B)  trigonal planar
C)  tetrahedral
D)  trigonal bipyramidal
E)  octahedral

Question 3

Draw the Lewis structure for the molecule C3H4.How many sigma and pi bonds does it contain?

Accepted Answer

A)  7 sigma,1 pi
B)  8 sigma,0 pi
C)  6 sigma,2 pi
D)  10 sigma,0 pi
E)  8 sigma,2 pi

Question 4

The hybrid orbital set used by the central atom in NF3 is ________.

Accepted Answer

A)  sp
B)   sp2
C)   sp3
D)   sp3d
E)   sp3d2

Question 5

Draw the Lewis structure for the molecule CH3CH2CCH.How many sigma and pi bonds does it contain?

Accepted Answer

A)  11 sigma,0 pi
B)  9 sigma,1 pi
C)  8 sigma,3 pi
D)  9 sigma,2 pi
E)  8 sigma,2 pi

Question 6

Give the approximate bond angle for a molecule with trigonal planar electron geometry and bent molecular geometry.

Accepted Answer

A)  
B)  90°
C)  
D)  
E)  120°

Question 7

Determine the molecular geometry for the molecule CS2.

Accepted Answer

A)  Trigonal planar
B)  Bent
C)  Linear
D)  T-shaped
E)  Square planar

Question 8

Determine the electron geometry for the molecule PCl5.

Accepted Answer

A)  Linear
B)  Trigonal planar
C)  Tetrahedral
D)  Trigonal bipyramidal
E)  Octahedral

Question 9

Using the VSEPR model,the molecular geometry of the central atom in BF3 is ________.

Accepted Answer

A)  tetrahedral
B)  trigonal bipyramidal
C)  trigonal planar
D)  bent
E)  linear

Question 10

The VSEPR model predicts the H-O-H bond angle in H3O+ to be

Accepted Answer

A)  60°.
B)  90°.
C)  less than 109.5° but greater than 90°.
D)  109.5°.

Question 11

Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of SO3.

Accepted Answer

A)  eg = tetrahedral,mg = trigonal pyramidal,polar
B)  eg = tetrahedral,mg = tetrahedral,nonpolar
C)  eg = trigonal planar,mg = trigonal planar,nonpolar
D)  eg = trigonal bipyramidal,mg = trigonal planar,polar
E)  eg = trigonal pyramidal,mg = bent,nonpolar

Question 12

Determine the electron geometry for the molecule SBr2.

Accepted Answer

A)  Linear
B)  Trigonal planar
C)  Tetrahedral
D)  Trigonal bipyramidal
E)  Octahedral

Question 13

Identify the number of electron groups around a molecule with a tetrahedral shape.

Accepted Answer

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

Question 14

What geometric arrangement of charge clouds is expected for an atom that has four charge clouds?

Accepted Answer

A)  trigonal bipyramidal
B)  octahedral
C)  tetrahedral
D)  square planar

Question 15

Determine the electron geometry for the molecule CS2.

Accepted Answer

A)  Linear
B)  Trigonal planar
C)  Tetrahedral
D)  Trigonal bipyramidal
E)  Octahedral

Question 16

Give the approximate bond angle for a molecule with trigonal bipyramidal electron geometry and linear molecular geometry.

Accepted Answer

A)  180°
B)  
C)  >180°
D)  
E)  <120°

Question 17

Choose the compound below that contains at least one polar covalent bond but is nonpolar.

Accepted Answer

A)  GeH2Br2
B)  SCl2
C)  AsCl5
D)  CF2Cl2

Question 18

A molecule or ion with two electrons in a bonding orbital and two electrons in an antibonding orbital would have a bond order of:

Accepted Answer

A)  0
B)  1
C)  1.5
D)  0.5
E)  -1

Exam 10: Chemical Bonding II: Molecular Shapes, valence Bond Theory, and Molecular Orbital Theory

Give the approximate bond angle for a molecule with trigonal planar electron geometry and bent molecular geometry.

Correct Answer
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Determine the molecular geometry for the molecule CS₂.

Correct Answer
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Determine the electron geometry for the molecule SBr₂.

Correct Answer
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Give the approximate bond angle for a molecule with trigonal bipyramidal electron geometry and linear molecular geometry.

Correct Answer
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The hybrid orbital set used by the central atom in NF₃ is ________.

Correct Answer
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Using the VSEPR model,the electron-domain geometry of the central atom in AlCl₃ is ________.

Correct Answer
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Determine the electron geometry for the molecule CS₂.

Correct Answer
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Choose the compound below that contains at least one polar covalent bond but is nonpolar.

Correct Answer
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Using the VSEPR model,the molecular geometry of the central atom in BF₃ is ________.

Correct Answer
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A molecule or ion with two electrons in a bonding orbital and two electrons in an antibonding orbital would have a bond order of:

Correct Answer
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Draw the Lewis structure for the molecule CH₃CH₂CCH.How many sigma and pi bonds does it contain?

Correct Answer
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What geometric arrangement of charge clouds is expected for an atom that has four charge clouds?

Correct Answer
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The VSEPR model predicts the H-O-H bond angle in H₃O⁺ to be

Correct Answer
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Draw the Lewis structure for the molecule C₃H₄.How many sigma and pi bonds does it contain?

Correct Answer
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Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of SO₃.

Correct Answer
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Determine the electron geometry for the molecule PCl₅.

Correct Answer
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Identify the number of electron groups around a molecule with a tetrahedral shape.

Correct Answer
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Determine the electron geometry (eg) and molecular geometry (mg) of CO₃²⁻.

Correct Answer
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Exam 10: Chemical Bonding II: Molecular Shapes, valence Bond Theory, and Molecular Orbital Theory

Give the approximate bond angle for a molecule with trigonal planar electron geometry and bent molecular geometry.

Correct AnswerverifiedShow Answer

Determine the molecular geometry for the molecule CS2.

Correct AnswerverifiedShow Answer

Determine the electron geometry for the molecule SBr2.

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Give the approximate bond angle for a molecule with trigonal bipyramidal electron geometry and linear molecular geometry.

Correct AnswerverifiedShow Answer

The hybrid orbital set used by the central atom in NF3 is ________.

Correct AnswerverifiedShow Answer

Using the VSEPR model,the electron-domain geometry of the central atom in AlCl3 is ________.

Correct AnswerverifiedShow Answer

Determine the electron geometry for the molecule CS2.

Correct AnswerverifiedShow Answer

Choose the compound below that contains at least one polar covalent bond but is nonpolar.

Correct AnswerverifiedShow Answer

Using the VSEPR model,the molecular geometry of the central atom in BF3 is ________.

Correct AnswerverifiedShow Answer

A molecule or ion with two electrons in a bonding orbital and two electrons in an antibonding orbital would have a bond order of:

Correct AnswerverifiedShow Answer

Draw the Lewis structure for the molecule CH3CH2CCH.How many sigma and pi bonds does it contain?

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What geometric arrangement of charge clouds is expected for an atom that has four charge clouds?

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The VSEPR model predicts the H-O-H bond angle in H3O+ to be

Correct AnswerverifiedShow Answer

Draw the Lewis structure for the molecule C3H4.How many sigma and pi bonds does it contain?

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Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of SO3.

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Determine the electron geometry for the molecule PCl5.

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Identify the number of electron groups around a molecule with a tetrahedral shape.

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Determine the electron geometry (eg) and molecular geometry (mg) of CO32⁻.

Correct AnswerverifiedShow Answer

Correct Answer
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Determine the molecular geometry for the molecule CS₂.

Correct Answer
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Determine the electron geometry for the molecule SBr₂.

Correct Answer
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Correct Answer
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The hybrid orbital set used by the central atom in NF₃ is ________.

Correct Answer
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Using the VSEPR model,the electron-domain geometry of the central atom in AlCl₃ is ________.

Correct Answer
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Determine the electron geometry for the molecule CS₂.

Correct Answer
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Correct Answer
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Using the VSEPR model,the molecular geometry of the central atom in BF₃ is ________.

Correct Answer
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Correct Answer
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Draw the Lewis structure for the molecule CH₃CH₂CCH.How many sigma and pi bonds does it contain?

Correct Answer
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Correct Answer
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The VSEPR model predicts the H-O-H bond angle in H₃O⁺ to be

Correct Answer
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Draw the Lewis structure for the molecule C₃H₄.How many sigma and pi bonds does it contain?

Correct Answer
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Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of SO₃.

Correct Answer
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Determine the electron geometry for the molecule PCl₅.

Correct Answer
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Correct Answer
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Determine the electron geometry (eg) and molecular geometry (mg) of CO₃²⁻.

Correct Answer
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