Question 1

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

Accepted Answer

A)   6H6? 
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B)   6H6? 
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C)   6H6? 
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D)   6H6? 
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E)   6H6? 
A)     
B)     
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D)     
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G) B) and D)

Question 2

Which is the most reasonable prediction for the Cl-N-Cl bond angle in NCl3?

Accepted Answer

A)  120°
B)  111°
C)  109.5°
D)  107°
E)  90°F) None of the above
G) A) and D)

Question 3

Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion,CO32-.

Accepted Answer

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

Question 4

The electrons in the delocalized molecular orbitals of benzene (C6H6)

Accepted Answer

A)  are confined between two adjacent bonding atoms.
B)  are free to move around the six-membered ring.
C)  form the electron pairs in the C-H bonds of the compound.
D)  are unevenly distributed through the molecule.
E)  give rise to alternating single and double bonds around the ring.F) C) and E)
G) A) and C)

Question 5

Indicate the type of hybrid orbitals used by the central atom in CCl4.

Accepted Answer

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

Question 6

Using the VSEPR model,predict the molecular geometry around the central atom in SO32-.

Accepted Answer

A)  trigonal planar
B)  trigonal pyramidal
C)  tetrahedral
D)  trigonal bipyramidal
E)  octahedralF) B) and D)
G) B) and C)

Question 7

According to the VSEPR model,a molecule with the general formula AB5 with no lone pairs on the central atom will have a ______ molecular geometry.

Accepted Answer

A)  tetrahedral
B)  trigonal planar
C)  trigonal pyramidal
D)  trigonal bipyramidal
E)  seesawF) A) and B)
G) D) and E)

Question 8

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) All of the above
G) B) and E)

Question 9

What is the hybridization of the central atom in ClO3-?

Accepted Answer

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

Question 10

When PCl5 solidifies it forms PCl4+cations and PCl6- anions.According to valence bond theory,what hybrid orbitals are used by phosphorus in the PCl4+cation?

Accepted Answer

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

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) A) and B)
G) A) and C)

Question 12

The number of lone pairs of electrons on the central atoms is an important factor used to determine the molecular shape or molecular geometry.

Accepted Answer

A) True 
 B)False

Question 13

Which figure best illustrates the hybrid orbitals on iodine in ICl2-?

Accepted Answer

A)  2-? 
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B)   2-? 
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C)  2-? 
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D)  2-? 
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G) A) and C)

Question 14

What is the molecular geometry of BeH2 as predicted by the VSEPR model?

Accepted Answer

A)  tetrahedral
B)  bent
C)  trigonal planar
D)  linear
E)  trigonal pyramidalF) A) and E)
G) A) and D)

Question 15

According to the VSEPR model,a molecule with the general formula AB3 possessing two lone pairs on the central atom has a trigonal planar molecular geometry.

Accepted Answer

A) True 
 B)False

Question 16

According to the VSEPR model,what is the predicted Cl-C-Cl bond angle in CCl4?

Accepted Answer

A)  90°
B)  109.5°
C)  120°
D)  145°
E)  180°F) C) and D)
G) A) and B)

Question 17

According to the VSEPR model,which one of the following molecules and ions will definitely have at least one 90° bond angle in it? (In each case,except water,the central atom is the first one in the formula.)

Accepted Answer

A)  AlCl4-
B)  NH3
C)  PCl5
D)  CO2
E)  H2OF) A) and B)
G) A) and D)

Question 18

The bond angles in the H3O+ ion are

Accepted Answer

A)  120°.
B)  90°,120°.
C)  109°.
D)  90°.
E)  180°.F) A) and D)
G) D) and E)

Question 19

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) A) and E)

Question 20

What is the total number of electron domains around the central atom for a molecule having a T-shaped molecular geometry,such as BrF3?

Accepted Answer

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

Exam 9: Chemical Bonding Ii Molecular Geometry and Bonding Theories

According to the VSEPR model,a molecule with the general formula AB3 possessing two lone pairs on the central atom has a trigonal planar molecular geometry.

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Using the VSEPR model,predict the molecular geometry around the central atom in SO32-.

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The number of π bonds in phosgene,COCl2,is

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When PCl5 solidifies it forms PCl4+cations and PCl6- anions.According to valence bond theory,what hybrid orbitals are used by phosphorus in the PCl4+cation?

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According to the VSEPR model,what is the predicted Cl-C-Cl bond angle in CCl4?

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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-?

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

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Indicate the type of hybrid orbitals used by the central atom in CCl4.

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Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion,CO32-.

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

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According to the VSEPR model,a molecule with the general formula AB5 with no lone pairs on the central atom will have a ______ molecular geometry.

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What is the hybridization of the central atom in ClO3-?

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What is the molecular geometry of BeH2 as predicted by the VSEPR model?

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Which figure best illustrates the hybrid orbitals on iodine in ICl2-?

Correct AnswerverifiedShow Answer

According to the VSEPR model,which one of the following molecules and ions will definitely have at least one 90° bond angle in it? (In each case,except water,the central atom is the first one in the formula.)

Correct AnswerverifiedShow Answer

The bond angles in the H3O+ ion are

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Which is the most reasonable prediction for the Cl-N-Cl bond angle in NCl3?

Correct AnswerverifiedShow Answer

The electrons in the delocalized molecular orbitals of benzene (C6H6)

Correct AnswerverifiedShow Answer

The number of lone pairs of electrons on the central atoms is an important factor used to determine the molecular shape or molecular geometry.

Correct AnswerverifiedShow Answer

What is the total number of electron domains around the central atom for a molecule having a T-shaped molecular geometry,such as BrF3?

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According to the VSEPR model,a molecule with the general formula AB₃ possessing two lone pairs on the central atom has a trigonal planar molecular geometry.

Correct Answer
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Using the VSEPR model,predict the molecular geometry around the central atom in SO₃^2-.

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

Correct Answer
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When PCl₅ solidifies it forms PCl₄⁺cations and PCl₆^- anions.According to valence bond theory,what hybrid orbitals are used by phosphorus in the PCl₄⁺cation?

Correct Answer
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According to the VSEPR model,what is the predicted Cl-C-Cl bond angle in CCl₄?

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

Correct Answer
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Indicate the type of hybrid orbitals used by the central atom in CCl₄.

Correct Answer
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Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion,CO₃^2-.

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

Correct Answer
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According to the VSEPR model,a molecule with the general formula AB₅ with no lone pairs on the central atom will have a ______ molecular geometry.

Correct Answer
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What is the hybridization of the central atom in ClO₃^-?

Correct Answer
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What is the molecular geometry of BeH₂ as predicted by the VSEPR model?

Correct Answer
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Which figure best illustrates the hybrid orbitals on iodine in ICl₂^-?

Correct Answer
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Correct Answer
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The bond angles in the H₃O⁺ ion are

Correct Answer
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Which is the most reasonable prediction for the Cl-N-Cl bond angle in NCl₃?

Correct Answer
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The electrons in the delocalized molecular orbitals of benzene (C₆H₆)

Correct Answer
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Correct Answer
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What is the total number of electron domains around the central atom for a molecule having a T-shaped molecular geometry,such as BrF₃?

Correct Answer
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