Question 1

The PCl5 molecule has

Accepted Answer

A)   nonpolar bonds, and is a nonpolar molecule.
B)   nonpolar bonds, but is a polar molecule.
C)   polar bonds, and is a polar molecule.
D)   polar bonds, but is a nonpolar molecule.E) A) and C)
F) All of the above

Question 2

Indicate the type of hybrid orbitals used by the central atom in SF6.

Accepted Answer

A)   sp
B)   sp2
C)   sp3
D)   sp3d
E)   sp3d2F) A) and B)
G) D) and E)

Question 3

According to molecular orbital theory, what is the bond order of the hypofluorite ion, OF-?

Accepted Answer

A)   0
B)   0.5
C)   1
D)   1.5
E)   2F) A) and B)
G) A) and C)

Question 4

Which figure best illustrates the hybrid orbitals on phosphorous in PH3?

Accepted Answer

A)   3? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
B)   3? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
C)   3? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
D)   3? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
E)   3? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >F) B) and C)
G) None of the above

Question 5

What is the number of lone electron pairs on the central atom of a molecule having a seesaw molecular geometry, such as SF4?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   6F) A) and B)
G) None of the above

Question 6

How many electron domains are on the central atom for a sp2 hybridized atom?

Accepted Answer

Question 7

In one sentence state the basic principle of valence bond theory.

Accepted Answer

A covalent bond forms when the...

Question 8

Which figure best illustrates the hybrid orbitals on carbon in benzene, C6H6?

Accepted Answer

A)   6H6? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
B)   6H6? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
C)   6H6? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
D)   6H6? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
E)   6H6? 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >F) D) and E)
G) A) and B)

Question 9

What is the molecular geometry of SiF62- as predicted by the VSEPR model? 62- as predicted by the VSEPR model?   A)  trigonal bipyramidal B)  octahedral C)  tetrahedral D)  seesaw E)  square pyramidal" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   trigonal bipyramidal
B)   octahedral
C)   tetrahedral
D)   seesaw
E)   square pyramidalF) C) and D)
G) None of the above

Question 10

Allene, C3H4 (shown below) , is one component of gas used for high-temperature welding. According to the valence bond model, which is a proper description of the bonding on the central carbon atom in allene? 3H4 (shown below) , is one component of gas used for high-temperature welding. According to the valence bond model, which is a proper description of the bonding on the central carbon atom in allene?   A)  It shares four   bonds, two with each carbon atom on either side. B)  It shares four σ bonds, two with each carbon atom on either side. C)  It shares one σ bond and one   bond with each carbon atom on either side. D)  It shares two σ bonds with the carbon atom on the left, and two   bonds with the carbon atom on the right. E)  It shares two σ bonds with the carbon atom on the right, and two   bonds with the carbon atom on the left." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   It shares four 3H4 (shown below) , is one component of gas used for high-temperature welding. According to the valence bond model, which is a proper description of the bonding on the central carbon atom in allene?   
A)   It shares four   bonds, two with each carbon atom on either side. 
B)   It shares four σ bonds, two with each carbon atom on either side. 
C)   It shares one σ bond and one   bond with each carbon atom on either side. 
D)   It shares two σ bonds with the carbon atom on the left, and two   bonds with the carbon atom on the right. 
E)   It shares two σ bonds with the carbon atom on the right, and two   bonds with the carbon atom on the left." class="answers-bank-image d-inline" rel="preload" > bonds, two with each carbon atom on either side.
B)   It shares four σ bonds, two with each carbon atom on either side.
C)   It shares one σ bond and one 3H4 (shown below) , is one component of gas used for high-temperature welding. According to the valence bond model, which is a proper description of the bonding on the central carbon atom in allene?   
A)   It shares four   bonds, two with each carbon atom on either side. 
B)   It shares four σ bonds, two with each carbon atom on either side. 
C)   It shares one σ bond and one   bond with each carbon atom on either side. 
D)   It shares two σ bonds with the carbon atom on the left, and two   bonds with the carbon atom on the right. 
E)   It shares two σ bonds with the carbon atom on the right, and two   bonds with the carbon atom on the left." class="answers-bank-image d-inline" rel="preload" > bond with each carbon atom on either side.
D)   It shares two σ bonds with the carbon atom on the left, and two 3H4 (shown below) , is one component of gas used for high-temperature welding. According to the valence bond model, which is a proper description of the bonding on the central carbon atom in allene?   
A)   It shares four   bonds, two with each carbon atom on either side. 
B)   It shares four σ bonds, two with each carbon atom on either side. 
C)   It shares one σ bond and one   bond with each carbon atom on either side. 
D)   It shares two σ bonds with the carbon atom on the left, and two   bonds with the carbon atom on the right. 
E)   It shares two σ bonds with the carbon atom on the right, and two   bonds with the carbon atom on the left." class="answers-bank-image d-inline" rel="preload" > bonds with the carbon atom on the right.
E)   It shares two σ bonds with the carbon atom on the right, and two 3H4 (shown below) , is one component of gas used for high-temperature welding. According to the valence bond model, which is a proper description of the bonding on the central carbon atom in allene?   
A)   It shares four   bonds, two with each carbon atom on either side. 
B)   It shares four σ bonds, two with each carbon atom on either side. 
C)   It shares one σ bond and one   bond with each carbon atom on either side. 
D)   It shares two σ bonds with the carbon atom on the left, and two   bonds with the carbon atom on the right. 
E)   It shares two σ bonds with the carbon atom on the right, and two   bonds with the carbon atom on the left." class="answers-bank-image d-inline" rel="preload" > bonds with the carbon atom on the left.F) B) and C)
G) A) and E)

Question 11

What is the number of lone electron pairs on the central atom of a molecule having a linear molecular geometry, such as ClF2-?

Accepted Answer

A)   1
B)   2
C)   3
D)   0
E)   4F) B) and D)
G) A) and C)

Question 12

The hybridization of the central nitrogen atom in the molecule N2O is

Accepted Answer

A)   sp.
B)   sp2.
C)   sp3.
D)   sp3d.
E)   sp3d2.F) B) and E)
G) A) and E)

Question 13

What is the molecular geometry of HOF as predicted by the VSEPR model?

Accepted Answer

A)   trigonal pyramidal
B)   bent
C)   tetrahedral
D)   linear
E)   trigonal planarF) B) and D)
G) A) and B)

Question 14

Consider the species N2-, N2, and N2+. Which of these species will be paramagnetic?

Accepted Answer

A)   N2 and N2-
B)   N2+ and N2
C)   N2+ and N2- 
D)   N2-, N2, and N2+
E)   None is paramagnetic.F) B) and E)
G) D) and E)

Question 15

Which molecular formula corresponds to a structural formula with carbon atoms having hybridizations of sp, sp2, and sp3?

Accepted Answer

A)   C3H6
B)   C4H4
C)   C4H6
D)   C5H6
E)   C5H8F) B) and E)
G) All of the above

Question 16

What is the predicted O-C-O bond angle in CO2?

Accepted Answer

A)   60°
B)   90°
C)   109.5°
D)   120°
E)   180°F) D) and E)
G) A) and D)

Question 17

What is the total number of electron domains around the central atom for a molecule having a square pyramidal molecular geometry, such as ClF5?

Accepted Answer

A)   5
B)   2
C)   3
D)   4
E)   6F) B) and C)
G) B) and E)

Question 18

Atoms of period 3 and beyond can undergo sp3d2 hybridization, but atoms of period 2 cannot.

Accepted Answer

A) True 
 B)False

Question 19

The BrF5 molecule has polar bonds and has a net dipole moment.

Accepted Answer

A) True 
 B)False

Question 20

The number of π bonds in phosgene, COCl2, is

Accepted Answer

A)   0.
B)   1.
C)   2.
D)   3.
E)   4.F) B) and C)
G) D) and E)

Exam 9: Chemical Bonding II: Molecular Geometry and Bonding Theories

The PCl5 molecule has

Correct AnswerverifiedShow Answer

Consider the species N2-, N2, and N2+. Which of these species will be paramagnetic?

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Indicate the type of hybrid orbitals used by the central atom in SF6.

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What is the molecular geometry of SiF62- as predicted by the VSEPR model?

Correct AnswerverifiedShow Answer

Which figure best illustrates the hybrid orbitals on phosphorous in PH3?

Correct AnswerverifiedShow Answer

What is the total number of electron domains around the central atom for a molecule having a square pyramidal molecular geometry, such as ClF5?

Correct AnswerverifiedShow Answer

What is the predicted O-C-O bond angle in CO2?

Correct AnswerverifiedShow Answer

According to molecular orbital theory, what is the bond order of the hypofluorite ion, OF-?

Correct AnswerverifiedShow Answer

Atoms of period 3 and beyond can undergo sp3d2 hybridization, but atoms of period 2 cannot.

Correct AnswerverifiedShow Answer

Allene, C3H4 (shown below) , is one component of gas used for high-temperature welding. According to the valence bond model, which is a proper description of the bonding on the central carbon atom in allene?

Correct AnswerverifiedShow Answer

The BrF5 molecule has polar bonds and has a net dipole moment.

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Which figure best illustrates the hybrid orbitals on carbon in benzene, C6H6?

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In one sentence state the basic principle of valence bond theory.

Correct AnswerverifiedA covalent bond forms when the...View AnswerShow Answer

What is the number of lone electron pairs on the central atom of a molecule having a linear molecular geometry, such as ClF2-?

Correct AnswerverifiedShow Answer

How many electron domains are on the central atom for a sp2 hybridized atom?

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What is the number of lone electron pairs on the central atom of a molecule having a seesaw molecular geometry, such as SF4?

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Which molecular formula corresponds to a structural formula with carbon atoms having hybridizations of sp, sp2, and sp3?

Correct AnswerverifiedShow Answer

What is the molecular geometry of HOF as predicted by the VSEPR model?

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The hybridization of the central nitrogen atom in the molecule N2O is

Correct AnswerverifiedShow Answer

The number of π bonds in phosgene, COCl2, is

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The PCl₅ molecule has

Correct Answer
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Consider the species N₂^-, N₂, and N₂⁺. Which of these species will be paramagnetic?

Correct Answer
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Indicate the type of hybrid orbitals used by the central atom in SF₆.

Correct Answer
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What is the molecular geometry of SiF₆^2- as predicted by the VSEPR model?

Correct Answer
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Which figure best illustrates the hybrid orbitals on phosphorous in PH₃?

Correct Answer
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What is the total number of electron domains around the central atom for a molecule having a square pyramidal molecular geometry, such as ClF₅?

Correct Answer
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What is the predicted O-C-O bond angle in CO₂?

Correct Answer
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According to molecular orbital theory, what is the bond order of the hypofluorite ion, OF^-?

Correct Answer
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Atoms of period 3 and beyond can undergo sp³^d² hybridization, but atoms of period 2 cannot.

Correct Answer
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Allene, C₃H₄ (shown below) , is one component of gas used for high-temperature welding. According to the valence bond model, which is a proper description of the bonding on the central carbon atom in allene?

Correct Answer
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The BrF₅ molecule has polar bonds and has a net dipole moment.

Correct Answer
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Which figure best illustrates the hybrid orbitals on carbon in benzene, C₆H₆?

Correct Answer
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Correct Answer
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A covalent bond forms when the...
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What is the number of lone electron pairs on the central atom of a molecule having a linear molecular geometry, such as ClF₂^-?

Correct Answer
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How many electron domains are on the central atom for a sp² hybridized atom?

Correct Answer
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What is the number of lone electron pairs on the central atom of a molecule having a seesaw molecular geometry, such as SF₄?

Correct Answer
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Which molecular formula corresponds to a structural formula with carbon atoms having hybridizations of sp, sp², and sp³?

Correct Answer
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Correct Answer
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The hybridization of the central nitrogen atom in the molecule N₂O is

Correct Answer
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The number of π bonds in phosgene, COCl₂, is

Correct Answer
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