Question 1

Which of the following molecules have the same geometries?

Accepted Answer

A)  SF4 and CH4
B)  CO2 and H2O
C)  CO2 and BeH2
D)  N2O and NO2

Question 2

What is the hybridization on the central atom in NO3-?

Accepted Answer

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

Question 3

According to the VSEPR theory, will the molecule PF5 will be polar or nonpolar?

Accepted Answer

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)  are responsible for the fact that the bonds between three pairs of carbon atoms in the ring are longer and stronger than the bonds between the other three pairs of carbon atoms.

Question 5

The geometry of the SF4 molecule is

Accepted Answer

A)  tetrahedral.
B)  trigonal pyramidal.
C)  trigonal planar.
D)  square planar.
E)  distorted tetrahedron (seesaw) .

Question 6

Ibuprofen is used as an analgesic for the relief of pain, and also to help reduce fever.  How many sigma bonds and pi bonds are contained in an ibuprofen molecule?

Accepted Answer

33 sigma b...

Question 7

Which of the following species has the largest dipole moment (i.e., is the most polar) ?

Accepted Answer

A)  CH4
B)  CH3Br
C)  CH3Cl
D)  CH3F
E)  CH3I

Question 8

The geometry of the hybrid orbitals of the central atom of a molecule is always the same as molecular geometry.

Accepted Answer

A) True 
 B)False

Question 9

According to the VSEPR theory, the geometry of the SO3 molecule is

Accepted Answer

A)  pyramidal.
B)  tetrahedral.
C)  trigonal planar.
D)  distorted tetrahedron (seesaw) .
E)  square planar.

Question 10

Use VSEPR theory to predict the geometry of the PCl3 molecule.

Accepted Answer

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

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

Ibuprofen is used as an analgesic for the relief of pain, and also to help reduce fever.What is the hybridization state of carbon indicated by the arrow in the structure of ibuprofen shown below? 2 C) sp3 D) sp3d E) sp3d2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 13

According to Molecular Orbital Theory, two separate px orbitals interact about the y-axis to form what molecular orbitals?

Accepted Answer

A)  ( σ\sigmaσ  and  σ\sigmaσ *) 
B)  ( π\piπ  and  π\piπ *) 
C)  ( σ\sigmaσ ,  σ\sigmaσ * and  π\piπ ) 
D)  ( π\piπ ,  π\piπ *, and  σ\sigmaσ ) 
E)  ( σ\sigmaσ ,  σ\sigmaσ *,  π\piπ , and  π\piπ *)

Question 14

Which one of the following molecules has a zero dipole moment?

Accepted Answer

A)  CO
B)  CH2Cl2
C)  SO3
D)  SO2
E)  NH3

Question 15

Indicate the type of hybrid orbitals used by the central atom in PCl3.

Accepted Answer

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

Question 16

A sp hybridized terminal nitrogen atom (bonded to one other atom only) with 1 lone pair of electrons has what type of bonding?

Accepted Answer

A)  1  π\piπ  and 2  σ\sigmaσ  bonds
B)  2  π\piπ  and 1  σ\sigmaσ  bonds
C)  2  π\piπ  and 2  σ\sigmaσ  bonds
D)  0  π\piπ  and 2  σ\sigmaσ  bonds
E)  0  π\piπ  and 3  σ\sigmaσ  bonds

Question 17

A molecule with 2 single bonds and 3 lone pair of electrons is predicted to have which type of moleculary geometry?

Accepted Answer

A)  Octahedral
B)  T-shaped
C)  Seesaw
D)  Trigonal bipyramidal
E)  Linear

Question 18

How does the geometrical structure of PF5 differ from that of IF5?

Accepted Answer

PF₅ is trigonal bipyr...

Question 19

According to the VSEPR theory, which one of the following species is linear?

Accepted Answer

A)  H2S
B)  HCN
C)  BF3
D)  H2CO
E)  SO2

Question 20

Explain why CO2 is nonpolar, but OCS is polar.

Accepted Answer

In CO₂ the two bond moments point in oppo...

Exam 10: Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

What is the hybridization on the central atom in NO3-?

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According to the VSEPR theory, will the molecule PF5 will be polar or nonpolar?

Correct AnswerverifiedShow Answer

How does the geometrical structure of PF5 differ from that of IF5?

Correct AnswerverifiedPF5 is trigonal bipyr...View AnswerShow Answer

Ibuprofen is used as an analgesic for the relief of pain, and also to help reduce fever.What is the hybridization state of carbon indicated by the arrow in the structure of ibuprofen shown below?

Correct AnswerverifiedShow Answer

Indicate the type of hybrid orbitals used by the central atom in PCl3.

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The geometry of the hybrid orbitals of the central atom of a molecule is always the same as molecular geometry.

Correct AnswerverifiedShow Answer

Ibuprofen is used as an analgesic for the relief of pain, and also to help reduce fever. How many sigma bonds and pi bonds are contained in an ibuprofen molecule?

Correct Answerverified33 sigma b...View AnswerShow Answer

Which one of the following molecules has a zero dipole moment?

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A molecule with 2 single bonds and 3 lone pair of electrons is predicted to have which type of moleculary geometry?

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

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A sp hybridized terminal nitrogen atom (bonded to one other atom only) with 1 lone pair of electrons has what type of bonding?

Correct AnswerverifiedShow Answer

The geometry of the SF4 molecule is

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According to Molecular Orbital Theory, two separate px orbitals interact about the y-axis to form what molecular orbitals?

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Which of the following species has the largest dipole moment (i.e., is the most polar) ?

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Which of the following molecules have the same geometries?

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

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Explain why CO2 is nonpolar, but OCS is polar.

Correct AnswerverifiedIn CO2 the two bond moments point in oppo...View AnswerShow Answer

According to the VSEPR theory, which one of the following species is linear?

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Use VSEPR theory to predict the geometry of the PCl3 molecule.

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According to the VSEPR theory, the geometry of the SO3 molecule is

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What is the hybridization on the central atom in NO₃^-?

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According to the VSEPR theory, will the molecule PF₅ will be polar or nonpolar?

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How does the geometrical structure of PF₅ differ from that of IF₅?

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PF₅ is trigonal bipyr...
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Indicate the type of hybrid orbitals used by the central atom in PCl₃.

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33 sigma b...
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The electrons in the delocalized molecular orbitals of benzene (C₆H₆)

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The geometry of the SF₄ molecule is

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According to Molecular Orbital Theory, two separate p_x orbitals interact about the y-axis to form what molecular orbitals?

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

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Explain why CO₂ is nonpolar, but OCS is polar.

Correct Answer
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In CO₂ the two bond moments point in oppo...
View Answer

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Use VSEPR theory to predict the geometry of the PCl₃ molecule.

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According to the VSEPR theory, the geometry of the SO₃ molecule is

Correct Answer
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