Question 1

Determine the electron geometry (eg) and molecular geometry (mg) of the underlined atom CH3OCH3.

Accepted Answer

A)  eg = tetrahedral,mg = tetrahedral
B)  eg = linear,mg = linear
C)  eg = tetrahedral,mg = bent
D)  eg = trigonal bipyramidal,mg = tetrahedral
E)  eg = octahedral,mg = square planarF) A) and D)
G) A) and C)

Question 2

Identify the number of electron groups around a molecule with sp2 hybridization.

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5F) A) and B)
G) A) and D)

Question 3

Determine the molecular geometry about each interior atom in the following structure.Sketch the three-dimensional structure and label the interior atoms with the corresponding molecular geometry.
CH2CHCCCH3

Accepted Answer

The sketch should show all of the approp...

Question 4

Determine the electron geometry (eg) and molecular geometry (mg) of the underlined carbon in CH3CN.

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

Question 5

Draw the Lewis structure for CCl4.What is the hybridization on the C atom?

Accepted Answer

A)  sp
B)  sp3d2
C)  sp3d
D)  sp3
E)  sp2F) B) and E)
G) D) and E)

Question 6

What are the F-Po-F bond angles in PoF6 ?

Accepted Answer

A)  60°
B)  90°
C)  109.5°
D)  120°E) B) and D)
F) All of the above

Question 7

Place the following in order of increasing F-A-F bond angle,where A represents the central atom in each molecule. 
PF3 \quad OF2  \quad PF4+

Accepted Answer

A)  PF3 2 4+
B)  OF2 3 4+
C)  OF2 4+ 3
D)  PF4+ 2 3
E)  PF4+ 3 2 F) None of the above
G) B) and D)

Question 8

Give the approximate bond angle for a molecule with octahedral electron geometry and square planar molecular geometry.

Accepted Answer

A)  90°
B)  180°
C)  >120°
D)  
E)  <120°F) C) and D)
G) All of the above

Question 9

In molecular orbital theory the acronym LUMO stands for

Accepted Answer

A)  lowest unhybridized molecular orientation.
B)  lowest unoccupied molecular orbital.
C)  lowest unhybridized molecular orbital.
D)  linear-uninteresting molecular orientation.
E)  It has no meaning.F) A) and D)
G) All of the above

Question 10

Determine the molecular geometry for the molecule SBr2.

Accepted Answer

A)  Trigonal pyramidal
B)  Trigonal planar
C)  Tetrahedral
D)  T-shaped
E)  BentF) B) and D)
G) A) and B)

Question 11

Place the following in order of increasing dipole moment. 
I.BCl3  \quad II.BIF2   \quad III.BClF2

Accepted Answer

A)  I 
B)  II 
C)  I 
D)  II 
E)  I < III < II F) D) and E)
G) B) and D)

Question 12

Draw the Lewis structure for COCl2.What is the hybridization on the C atom?

Accepted Answer

A)  sp
B)  sp3d2
C)  sp3d
D)  sp3
E)  sp2F) A) and C)
G) C) and D)

Question 13

What is the O-B-O bond angle in BO33-?

Accepted Answer

A)  less than 109.5°
B)  109.5°
C)  120°
D)  greater than 120°E) All of the above
F) A) and B)

Question 14

Determine the electron geometry (eg) and molecular geometry (mg) of SiF4.

Accepted Answer

A)  eg = tetrahedral,mg = trigonal pyramidal
B)  eg = octahedral,mg = square planar
C)  eg = trigonal bipyramidal,mg = trigonal pyramidal
D)  eg = tetrahedral,mg = bent
E)  eg = tetrahedral,mg = tetrahedralF) B) and C)
G) All of the above

Question 15

Using the VSEPR model,the molecular geometry of the central atom in SeO2 is ________.

Accepted Answer

A)  linear
B)  tetrahedral
C)  bent
D)  trigonal planar
E)  trigonal pyramidalF) All of the above
G) A) and D)

Question 16

A molecule or ion with eight electrons in bonding orbitals and two electrons in an antibonding orbital has a bond order of:

Accepted Answer

A)  1
B)  1.5
C)  2
D)  2.5
E)  3F) A) and B)
G) A) and C)

Question 17

Using the VSEPR model,the molecular geometry of the central atom in XeCl4   is ________.

Accepted Answer

A)  tetrahedral
B)  seasaw
C)  trigonal bipyramidal
D)  square pyramidal
E)  square planarF) A) and C)
G) B) and C)

Question 18

Determine the electron geometry (eg) and molecular geometry (mg) of the underlined atom CH3OCH3.

Accepted Answer

A)  eg = tetrahedral,mg = tetrahedral
B)  eg = linear,mg = linear
C)  eg = tetrahedral,mg = bent
D)  eg = trigonal bipyramidal,mg = tetrahedral
E)  eg = octahedral,mg = square planarF) A) and D)
G) C) and E)

Question 19

Place the following in order of decreasing dipole moment. 
I.cis-CHCl=CHCl  \quad II.trans-CHCl=CHCI  \quad III.cis-CHF=CHF

Accepted Answer

A)  III > I > II
B)  II > I > III
C)  I > III > II
D)  II > III > I
E)  I = III > II F) None of the above
G) A) and B)

Question 20

Explain why oil and water do not mix.

Accepted Answer

Water molecules are ...

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

Place the following in order of increasing F-A-F bond angle,where A represents the central atom in each molecule. PF3 \quad OF2 \quad PF4+

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Place the following in order of increasing dipole moment. I.BCl3 \quad II.BIF2 \quad III.BClF2

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In molecular orbital theory the acronym LUMO stands for

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Identify the number of electron groups around a molecule with sp2 hybridization.

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Place the following in order of decreasing dipole moment. I.cis-CHCl=CHCl \quad II.trans-CHCl=CHCI \quad III.cis-CHF=CHF

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Determine the molecular geometry about each interior atom in the following structure.Sketch the three-dimensional structure and label the interior atoms with the corresponding molecular geometry. CH2CHCCCH3

Correct AnswerverifiedThe sketch should show all of the approp...View AnswerShow Answer

Using the VSEPR model,the molecular geometry of the central atom in XeCl4 is ________.

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Explain why oil and water do not mix.

Correct AnswerverifiedWater molecules are ...View AnswerShow Answer

What are the F-Po-F bond angles in PoF6 ?

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Draw the Lewis structure for CCl4.What is the hybridization on the C atom?

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A molecule or ion with eight electrons in bonding orbitals and two electrons in an antibonding orbital has a bond order of:

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Determine the electron geometry (eg) and molecular geometry (mg) of the underlined atom CH3OCH3.

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Using the VSEPR model,the molecular geometry of the central atom in SeO2 is ________.

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Draw the Lewis structure for COCl2.What is the hybridization on the C atom?

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Determine the electron geometry (eg) and molecular geometry (mg) of the underlined carbon in CH3CN.

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Determine the electron geometry (eg) and molecular geometry (mg) of SiF4.

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What is the O-B-O bond angle in BO33-?

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Give the approximate bond angle for a molecule with octahedral electron geometry and square planar molecular geometry.

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Determine the electron geometry (eg) and molecular geometry (mg) of the underlined atom CH3OCH3.

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Determine the molecular geometry for the molecule SBr2.

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Place the following in order of increasing F-A-F bond angle,where A represents the central atom in each molecule. PF₃ $\quad$ OF₂ $\quad$ PF₄⁺

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Place the following in order of increasing dipole moment. I.BCl₃ $\quad$ II.BIF₂ $\quad$ III.BClF₂

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Identify the number of electron groups around a molecule with sp² hybridization.

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Place the following in order of decreasing dipole moment. I.cis-CHCl=CHCl $\quad$ II.trans-CHCl=CHCI $\quad$ III.cis-CHF=CHF

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Determine the molecular geometry about each interior atom in the following structure.Sketch the three-dimensional structure and label the interior atoms with the corresponding molecular geometry. CH₂CHCCCH₃

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The sketch should show all of the approp...
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Using the VSEPR model,the molecular geometry of the central atom in XeCl₄ is ________.

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Water molecules are ...
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What are the F-Po-F bond angles in PoF₆ ?

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Draw the Lewis structure for CCl₄.What is the hybridization on the C atom?

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Determine the electron geometry (eg) and molecular geometry (mg) of the underlined atom CH₃OCH₃.

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Using the VSEPR model,the molecular geometry of the central atom in SeO₂is ________.

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Draw the Lewis structure for COCl₂.What is the hybridization on the C atom?

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Determine the electron geometry (eg) and molecular geometry (mg) of the underlined carbon in CH₃CN.

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Determine the electron geometry (eg) and molecular geometry (mg) of SiF₄.

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What is the O-B-O bond angle in BO₃^3-?

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Determine the electron geometry (eg) and molecular geometry (mg) of the underlined atom CH₃OCH₃.

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Determine the molecular geometry for the molecule SBr₂.

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