Question 1

Which molecule(s) is (are) polar?

Accepted Answer

A)  I only 
B)  II only 
C)  I and II 
D)  I, II, and III 
E)  II, III, and IV 
A)  I only 
B)  II only 
C)  I and II 
D)  I, II, and III 
E)  II, III, and IV

Question 2

The VSEPR model attempts to ____ electron-pair ____.

Accepted Answer

A)  eliminate; repulsions 
B)  minimize; collisions 
C)  minimize; repulsions 
D)  maximize; attractions 
E)  maximize; repulsions 
A)  eliminate; repulsions 
B)  minimize; collisions 
C)  minimize; repulsions 
D)  maximize; attractions 
E)  maximize; repulsions

Question 3

Which compound experiences hydrogen bonding as one of its intermolecular forces?

Accepted Answer

A)  O2 
B)  SiH4 
C)  AsH3 
D)  HI 
E)  CH3OH 
A)  O2 
B)  SiH4 
C)  AsH3 
D)  HI 
E)  CH3OH

Question 4

Which interaction(s) exist(s) between ClF3 molecules? 
I. London forces.
II. ion-dipole forces
III. dipole-dipole attractions
IV. Hydrogen bonding

Accepted Answer

A)  I only 
B)  I and III 
C)  II and III 
D)  III only 
E)  III and IV 
A)  I only 
B)  I and III 
C)  II and III 
D)  III only 
E)  III and IV

Question 5

Use the VSEPR model to predict the electron-pair geometry of O3.

Accepted Answer

A)  linear 
B)  tetrahedral 
C)  triangular bipyramidal 
D)  bent 
E)  triangular planar 
A)  linear 
B)  tetrahedral 
C)  triangular bipyramidal 
D)  bent 
E)  triangular planar

Question 6

In the VSEPR model, under which condition will the electron-pair geometry be the same as the molecular geometry?

Accepted Answer

A)  in molecules with at least one lone pair of electrons on the central atom 
B)  in molecules with no lone pairs of electrons on the substituent atoms 
C)  in molecules with a central atom which is a nonmetal 
D)  in molecules with no lone pairs of electrons on the central atom 
E)  in molecules with more than one octet around the central atom 
A)  in molecules with at least one lone pair of electrons on the central atom 
B)  in molecules with no lone pairs of electrons on the substituent atoms 
C)  in molecules with a central atom which is a nonmetal 
D)  in molecules with no lone pairs of electrons on the central atom 
E)  in molecules with more than one octet around the central atom

Question 7

Use the VSEPR model to predict the electron-pair geometry of IF2-.

Accepted Answer

A)  linear 
B)  bent 
C)  triangular bipyramidal 
D)  tetrahedral 
E)  T-shaped 
A)  linear 
B)  bent 
C)  triangular bipyramidal 
D)  tetrahedral 
E)  T-shaped

Question 8

Which molecule is polar?

Accepted Answer

A)  BF3 
B)  H2Se 
C)  N2 
D)  GeF4 
E)  CO2 
A)  BF3 
B)  H2Se 
C)  N2 
D)  GeF4 
E)  CO2

Question 9

Which correctly lists the relative strengths of electron-pair repulsions?

Accepted Answer

A)  bonding pair-bonding pair > lone pair-bonding pair > lone pair-lone pair 
B)  lone pair-lone pair > lone pair-bonding pair > bonding pair-bonding pair 
C)  lone pair-lone pair > bonding pair-bonding pair > lone pair-bonding pair 
D)  lone pair-bonding pair > lone pair-lone pair > bonding pair-bonding pair 
E)  bonding pair-bonding pair > lone pair-lone pair > lone pair-bonding pair 
A)  bonding pair-bonding pair > lone pair-bonding pair > lone pair-lone pair 
B)  lone pair-lone pair > lone pair-bonding pair > bonding pair-bonding pair 
C)  lone pair-lone pair > bonding pair-bonding pair > lone pair-bonding pair 
D)  lone pair-bonding pair > lone pair-lone pair > bonding pair-bonding pair 
E)  bonding pair-bonding pair > lone pair-lone pair > lone pair-bonding pair

Question 10

Which molecule is nonpolar?

Accepted Answer

A)  NCl3 
B)  SO2 
C)  PH3 
D)  IF 
E)  CF4 
A)  NCl3 
B)  SO2 
C)  PH3 
D)  IF 
E)  CF4

Question 11

Which compound has the lowest boiling point?

Accepted Answer

A)  NH3 
B)  CH4 
C)  H2O 
D)  HCl 
E)  H2Se 
A)  NH3 
B)  CH4 
C)  H2O 
D)  HCl 
E)  H2Se

Question 12

Which substances have triangular pyramidal molecular geometry? I. nitrite ion
II. hydronium ion
III. sulfite ion
IV. carbonate ion

Accepted Answer

A)  I and II 
B)  I and III 
C)  II and III 
D)  II and IV 
E)  III and IV 
A)  I and II 
B)  I and III 
C)  II and III 
D)  II and IV 
E)  III and IV

Question 13

If the molecular geometry of a substance is linear, the electron-pair geometry could be ____ with the central atom having ____ lone pairs.

Accepted Answer

A)  triangular planar; one 
B)  tetrahedral; two 
C)  tetrahedral; four 
D)  triangular bipyramidal; two 
E)  triangular bipyramidal; three 
A)  triangular planar; one 
B)  tetrahedral; two 
C)  tetrahedral; four 
D)  triangular bipyramidal; two 
E)  triangular bipyramidal; three

Which molecule(s) is (are) polar?

The VSEPR model attempts to electron-pair .

Which compound experiences hydrogen bonding as one of its intermolecular forces?

Which interaction(s) exist(s) between ClF₃ molecules? I. London forces. II. ion-dipole forces III. dipole-dipole attractions IV. Hydrogen bonding

Use the VSEPR model to predict the electron-pair geometry of O₃.

In the VSEPR model, under which condition will the electron-pair geometry be the same as the molecular geometry?

Use the VSEPR model to predict the electron-pair geometry of IF₂^-.

Which molecule is polar?

Which correctly lists the relative strengths of electron-pair repulsions?

Which molecule is nonpolar?

Which compound has the lowest boiling point?

Which substances have triangular pyramidal molecular geometry? I. nitrite ion II. hydronium ion III. sulfite ion IV. carbonate ion

If the molecular geometry of a substance is linear, the electron-pair geometry could be with the central atom having lone pairs.

The Nature of Chemistry

Atoms and Elements

Chemical Compounds

Quantities of Reactants and Products

Chemical Reactions

Energy and Chemical Reactions

Electron Configurations and the Periodic Table

Covalent Bonding

Gases and the Atmosphere

Liquids, Solids, and Materials

Chemical Kinetics: Rates of Reactions

Chemical Equilibrium

The Chemistry of Solutes and Solutions

Acids and Bases

Additional Aqueous Equilibria

Thermodynamics: Directionality of Chemical Reactions

Electrochemistry and Its Applications

Nuclear Chemistry

Filters

Exam 9: Molecular Structure

Which molecule(s) is (are) polar?

The VSEPR model attempts to ____ electron-pair ____.

Which compound experiences hydrogen bonding as one of its intermolecular forces?

Which interaction(s) exist(s) between ClF3 molecules? I. London forces. II. ion-dipole forces III. dipole-dipole attractions IV. Hydrogen bonding

Use the VSEPR model to predict the electron-pair geometry of O3.

In the VSEPR model, under which condition will the electron-pair geometry be the same as the molecular geometry?

Use the VSEPR model to predict the electron-pair geometry of IF2-.

Which molecule is polar?

Which correctly lists the relative strengths of electron-pair repulsions?

Which molecule is nonpolar?

Which compound has the lowest boiling point?

Which substances have triangular pyramidal molecular geometry? I. nitrite ion II. hydronium ion III. sulfite ion IV. carbonate ion

If the molecular geometry of a substance is linear, the electron-pair geometry could be ____ with the central atom having ____ lone pairs.

The Nature of Chemistry

Atoms and Elements

Chemical Compounds

Quantities of Reactants and Products

Chemical Reactions

Energy and Chemical Reactions

Electron Configurations and the Periodic Table

Covalent Bonding

Gases and the Atmosphere

Liquids, Solids, and Materials

Chemical Kinetics: Rates of Reactions

Chemical Equilibrium

The Chemistry of Solutes and Solutions

Acids and Bases

Additional Aqueous Equilibria

Thermodynamics: Directionality of Chemical Reactions

Electrochemistry and Its Applications

Nuclear Chemistry

Filters

The VSEPR model attempts to electron-pair .

Which interaction(s) exist(s) between ClF₃ molecules? I. London forces. II. ion-dipole forces III. dipole-dipole attractions IV. Hydrogen bonding

Use the VSEPR model to predict the electron-pair geometry of O₃.

Use the VSEPR model to predict the electron-pair geometry of IF₂^-.

If the molecular geometry of a substance is linear, the electron-pair geometry could be with the central atom having lone pairs.