Question 1

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

Question 2

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

Accepted Answer

Question 3

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. 
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 4

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

Accepted Answer

A) ($\sigma$ and $\sigma$*) 
B) ($\pi$ and $\pi$*) 
C) ($\sigma$, $\sigma$* and $\pi$) 
D) ($\pi$, $\pi$*, and $\sigma$) 
E) ($\sigma$, $\sigma$*, $\pi$, and $\pi$*) 
A) ($\sigma$ and $\sigma$*) 
B) ($\pi$ and $\pi$*) 
C) ($\sigma$, $\sigma$* and $\pi$) 
D) ($\pi$, $\pi$*, and $\sigma$) 
E) ($\sigma$, $\sigma$*, $\pi$, and $\pi$*)

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

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

Question 7

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

Question 8

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

Accepted Answer

PF₅ is trigonal bipyr

Question 9

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

Accepted Answer

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

Question 10

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

Question 11

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?

Accepted Answer

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

Question 12

The geometry of the SF4 molecule is

Accepted Answer

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

Question 13

Explain why CO2 is nonpolar, but OCS is polar.

Accepted Answer

In CO₂ the two bond moments point in oppo

Question 14

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

Question 15

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 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 $\pi$ and 2 $\sigma$ bonds 
B) 2 $\pi$ and 1 $\sigma$ bonds 
C) 2 $\pi$ and 2 $\sigma$ bonds 
D) 0 $\pi$ and 2 $\sigma$ bonds 
E) 0 $\pi$ and 3 $\sigma$ bonds 
A) 1 $\pi$ and 2 $\sigma$ bonds 
B) 2 $\pi$ and 1 $\sigma$ bonds 
C) 2 $\pi$ and 2 $\sigma$ bonds 
D) 0 $\pi$ and 2 $\sigma$ bonds 
E) 0 $\pi$ and 3 $\sigma$ bonds

Question 17

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

Question 18

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

Accepted Answer

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

Question 19

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

Question 20

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

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

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

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

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

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

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

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

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

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

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

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

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?

The geometry of the SF4 molecule is

Explain why CO2 is nonpolar, but OCS is polar.

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

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

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

Which of the following molecules have the same geometries?

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

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

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?

Chemistry: the Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

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

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

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

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

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

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

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

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

The geometry of the SF₄ molecule is

Explain why CO₂ is nonpolar, but OCS is polar.

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