Question 1

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

Accepted Answer

A)  HCN
B)  CF4
C)  SeBr4
D)  ICl3

Question 2

How many of the following molecules have sp3 hybridization on the central atom? 
XeCl4  \quad CH4  \quad SF4  \quad C2H2

Accepted Answer

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

Question 3

Draw the Lewis structure for BF3.What is the hybridization on the B atom?

Accepted Answer

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

Question 4

Determine the electron geometry (eg) and molecular geometry (mg) of NCl3.

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 = tetrahedral,mg = trigonal pyramidal

Question 5

Determine the electron geometry (eg) and molecular geometry (mg) of PF5.

Accepted Answer

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

Question 6

List the number of sigma bonds and pi bonds in a single bond.

Accepted Answer

A)  1 sigma,0 pi
B)  0 sigma,1 pi
C)  1 sigma,1 pi
D)  1 sigma,2 pi

Question 7

Draw the Lewis structure for BrF5.What is the hybridization on the Br atom?

Accepted Answer

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

Question 8

Using the VSEPR model,the molecular geometry of the central atom in XeF2 is ________.

Accepted Answer

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

Question 9

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

Accepted Answer

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

Question 10

What is the molecular geometry of NCl3?

Accepted Answer

A)  T-shaped
B)  tetrahedral
C)  trigonal planar
D)  trigonal pyramidal

Question 11

Determine the electron geometry (eg) and molecular geometry (mg) of ICl2-.

Accepted Answer

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

Question 12

Use the molecular orbital diagram shown to determine which of the following is most stable. 2 B) F22+ C) Ne22+ D) O22+ E) F22-" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  F2
B)  F22+
C)  Ne22+
D)  O22+
E)  F22-

Question 13

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

Accepted Answer

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

Question 14

Draw the Lewis structure for BrO4-.What is the hybridization on the Br atom?

Accepted Answer

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

Question 15

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

Accepted Answer

A)  180°
B)  
C)  
D)  109.5°
E)  <120°

Question 16

Determine the electron geometry for the molecule BrF3.

Accepted Answer

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

Question 17

Draw the Lewis structure for BrCl3.What is the hybridization on the Br atom?

Accepted Answer

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

Question 18

Using the VSEPR model,the electron-domain geometry of the central atom in H2O  is ________.

Accepted Answer

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

Question 19

What is the molecular geometry of SF5-?

Accepted Answer

A)  octahedral
B)  seesaw
C)  square pyramidal
D)  trigonal bipyramidal

Question 20

Draw the Lewis structure for SO3.What is the hybridization on the S atom?

Accepted Answer

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

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

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

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

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How many of the following molecules have sp3 hybridization on the central atom? XeCl4 \quad CH4 \quad SF4 \quad C2H2

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Determine the electron geometry (eg) and molecular geometry (mg) of ICl2-.

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

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

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Draw the Lewis structure for BF3.What is the hybridization on the B atom?

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

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Draw the Lewis structure for BrCl3.What is the hybridization on the Br atom?

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Using the VSEPR model,the electron-domain geometry of the central atom in H2O is ________.

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List the number of sigma bonds and pi bonds in a single bond.

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Determine the electron geometry (eg) and molecular geometry (mg) of NCl3.

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Using the VSEPR model,the molecular geometry of the central atom in XeF2 is ________.

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What is the molecular geometry of SF5-?

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What is the molecular geometry of NCl3?

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Draw the Lewis structure for SO3.What is the hybridization on the S atom?

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Draw the Lewis structure for BrO4-.What is the hybridization on the Br atom?

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Determine the electron geometry (eg) and molecular geometry (mg) of PF5.

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Draw the Lewis structure for BrF5.What is the hybridization on the Br atom?

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Determine the electron geometry for the molecule BrF3.

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How many of the following molecules have sp³ hybridization on the central atom? XeCl₄ $\quad$ CH₄ $\quad$ SF₄ $\quad$ C₂H₂

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Determine the electron geometry (eg) and molecular geometry (mg) of ICl₂^-.

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Draw the Lewis structure for BF₃.What is the hybridization on the B atom?

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Draw the Lewis structure for BrCl₃.What is the hybridization on the Br atom?

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Using the VSEPR model,the electron-domain geometry of the central atom in H₂O is ________.

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Determine the electron geometry (eg) and molecular geometry (mg) of NCl₃.

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Using the VSEPR model,the molecular geometry of the central atom in XeF₂ is ________.

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What is the molecular geometry of SF₅^-?

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What is the molecular geometry of NCl₃?

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Draw the Lewis structure for SO₃.What is the hybridization on the S atom?

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Draw the Lewis structure for BrO₄^-.What is the hybridization on the Br atom?

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Determine the electron geometry (eg) and molecular geometry (mg) of PF₅.

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Draw the Lewis structure for BrF₅.What is the hybridization on the Br atom?

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Determine the electron geometry for the molecule BrF₃.

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