Question 1

Draw the Lewis structure for N2H2.What is the hybridization on the N atoms?

Accepted Answer

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

Question 2

Give the approximate bond angle for a molecule with a linear shape.

Accepted Answer

A)  109.5°
B)  180°
C)  120°
D)  105°
E)  90°

Question 3

Draw a molecular orbital diagram and use it to determine which of the following is most stable.

Accepted Answer

A)  C22+
B)  N22+
C)  B2
D)  C22-
E)  B22+

Question 4

How many of the following molecules are polar? BrCl3  \quad CS2  \quad SiF4  \quad SO3

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  0

Question 5

Use the molecular orbital diagram shown to determine which of the following is paramagnetic. 22+ B) B22- C) N22+ D) C22- E) B2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  B22+
B)  B22-
C)  N22+
D)  C22-
E)  B2

Question 6

Using the VSEPR model,the electron-domain geometry of the central atom in BrF4- is ________.

Accepted Answer

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

Question 7

Determine the molecular geometry for the molecule PCl5.

Accepted Answer

A)  Linear
B)  Seesaw
C)  Square pyramidal
D)  Trigonal bipyramidal
E)  Square planar

Question 8

Place the following in order of increasing X-A-X bond angle,where A represents the central atom and X represents the outer atoms in each molecule. 
HCN  \quad H2O  \quad H3O+

Accepted Answer

A)  H3O+ 2O
B)  H3O+ 2O 
C)  HCN 3O+ 2O
D)  H2O 3O+
E)  H2O 3O+ < HCN

Question 9

Determine the electron geometry for the molecule XeF4.

Accepted Answer

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

Question 10

Determine the electron geometry (eg) and molecular geometry (mg) of CO2.

Accepted Answer

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

Question 11

How many of the following molecules are polar? 
PCl5  \quad COS  \quad XeO3  \quad SeBr2

Accepted Answer

A)  2
B)  0
C)  1
D)  3
E)  4

Question 12

Give the approximate bond angle between the axial position and the equatorial position for a molecule with a trigonal bipyramidal geometry.

Accepted Answer

A)  109.5°
B)  180°
C)  120°
D)  105°
E)  90°

Question 13

Give the approximate bond angle for a molecule with T-shape molecular geometry.

Accepted Answer

A)  
B)  90°
C)  >90°
D)  
E)  120°

Question 14

Give the approximate bond angle between two equatorial positions for a molecule with a trigonal bipyramidal geometry.

Accepted Answer

A)  109.5°
B)  180°
C)  120°
D)  105°
E)  90°

Question 15

Using the VSEPR model,the electron-domain geometry of the central atom in SCl4 is ________.

Accepted Answer

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

Question 16

Draw a molecular orbital diagram and use it to determine which of the following is most stable.

Accepted Answer

A)  C22+
B)  N22+
C)  B2
D)  C22-
E)  B22+

Question 17

Draw a molecular orbital diagram and use it to determine which of the following is paramagnetic.

Accepted Answer

A)  O22-
B)  Ne22+
C)  O22+
D)  F22+
E)  None of the above is paramagnetic.

Question 18

The hybrid orbital set used by the central atom in SCl4 is ________.

Accepted Answer

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

Question 19

Determine the electron geometry (eg) and molecular geometry (mg) of XeF2.

Accepted Answer

A)  eg = trigonal bipyramidal,mg = bent
B)  eg = linear,mg = linear
C)  eg = tetrahedral,mg = linear
D)  eg = trigonal bipyramidal,mg = linear
E)  eg = tetrahedral,mg = bent

Question 20

How many of the following molecules contain at least one pi bond? 
C2H6  \quad Cl2CO  \quad C2Cl4  \quad SeS3

Accepted Answer

A)  0
B)  1
C)  3
D)  4
E)  2

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

Draw a molecular orbital diagram and use it to determine which of the following is most stable.

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How many of the following molecules are polar? BrCl3 \quad CS2 \quad SiF4 \quad SO3

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Using the VSEPR model,the electron-domain geometry of the central atom in SCl4 is ________.

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Give the approximate bond angle between the axial position and the equatorial position for a molecule with a trigonal bipyramidal geometry.

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How many of the following molecules are polar? PCl5 \quad COS \quad XeO3 \quad SeBr2

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Draw the Lewis structure for N2H2.What is the hybridization on the N atoms?

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Use the molecular orbital diagram shown to determine which of the following is paramagnetic.

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Draw a molecular orbital diagram and use it to determine which of the following is most stable.

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How many of the following molecules contain at least one pi bond? C2H6 \quad Cl2CO \quad C2Cl4 \quad SeS3

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Draw a molecular orbital diagram and use it to determine which of the following is paramagnetic.

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Place the following in order of increasing X-A-X bond angle,where A represents the central atom and X represents the outer atoms in each molecule. HCN \quad H2O \quad H3O+

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Give the approximate bond angle between two equatorial positions for a molecule with a trigonal bipyramidal geometry.

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Determine the electron geometry (eg) and molecular geometry (mg) of XeF2.

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Give the approximate bond angle for a molecule with T-shape molecular geometry.

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The hybrid orbital set used by the central atom in SCl4 is ________.

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Determine the electron geometry for the molecule XeF4.

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Give the approximate bond angle for a molecule with a linear shape.

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Using the VSEPR model,the electron-domain geometry of the central atom in BrF4- is ________.

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Determine the electron geometry (eg) and molecular geometry (mg) of CO2.

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Determine the molecular geometry for the molecule PCl5.

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How many of the following molecules are polar? BrCl₃ $\quad$ CS₂ $\quad$ SiF₄ $\quad$ SO₃

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Using the VSEPR model,the electron-domain geometry of the central atom in SCl₄ is ________.

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How many of the following molecules are polar? PCl₅ $\quad$ COS $\quad$ XeO₃ $\quad$ SeBr₂

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Draw the Lewis structure for N₂H₂.What is the hybridization on the N atoms?

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How many of the following molecules contain at least one pi bond? C₂H₆ $\quad$ Cl₂CO $\quad$ C₂Cl₄ $\quad$ SeS₃

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Place the following in order of increasing X-A-X bond angle,where A represents the central atom and X represents the outer atoms in each molecule. HCN $\quad$ H₂O $\quad$ H₃O⁺

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Determine the electron geometry (eg) and molecular geometry (mg) of XeF₂.

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The hybrid orbital set used by the central atom in SCl₄ is ________.

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Determine the electron geometry for the molecule XeF₄.

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Using the VSEPR model,the electron-domain geometry of the central atom in BrF₄^- is ________.

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Determine the electron geometry (eg) and molecular geometry (mg) of CO₂.

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Determine the molecular geometry for the molecule PCl₅.

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