Question 1

Select the correct Lewis structure for nitrogen trifluoride, NF3.

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 2

What is the predicted molecular geometry of the CH4 molecule according to the VSEPR model?

Accepted Answer

A) tetrahedral 
B) trigonal pyramidal 
C) trigonal planar 
D) square planar 
E) seesaw 
A) tetrahedral 
B) trigonal pyramidal 
C) trigonal planar 
D) square planar 
E) seesaw

Question 3

Which substance will exhibit hydrogen bonding between molecules?

Accepted Answer

A) (CH3)3N 
B) CH3-O-CH3 
C) CH3CH2-OH 
D) CH3CH2-F 
E) HI 
A) (CH3)3N 
B) CH3-O-CH3 
C) CH3CH2-OH 
D) CH3CH2-F 
E) HI

Question 4

The strongest intermolecular interactions between hydrogen fluoride (HF) molecules arise from

Accepted Answer

A) dipole-dipole forces. 
B) London dispersion forces. 
C) hydrogen bonding. 
D) ion-dipole interactions. 
E) ionic bonds. 
A) dipole-dipole forces. 
B) London dispersion forces. 
C) hydrogen bonding. 
D) ion-dipole interactions. 
E) ionic bonds.

Question 5

What is wrong with this Lewis structure?

Accepted Answer

A) There are too many electrons. 
B) There are too few electrons. 
C) The O atom does not have an octet. 
D) The C atom does not have an octet. 
E) There is nothing wrong with this Lewis structure. 
A) There are too many electrons. 
B) There are too few electrons. 
C) The O atom does not have an octet. 
D) The C atom does not have an octet. 
E) There is nothing wrong with this Lewis structure.

Question 6

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

Question 7

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

Accepted Answer

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

Question 8

What does the abbreviation VSEPR stand for?

Accepted Answer

A) Very Specific Electron and Proton Repair 
B) Variable Selective of Electron and Protons 
C) Valence Shell for Every Proton 
D) Very Selective Electron Pair theory 
E) Valence-Shell Electron-Pair Repulsion 
A) Very Specific Electron and Proton Repair 
B) Variable Selective of Electron and Protons 
C) Valence Shell for Every Proton 
D) Very Selective Electron Pair theory 
E) Valence-Shell Electron-Pair Repulsion

Question 9

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

Question 10

According to the VSEPR model, the predicted molecular geometry of the SO3 molecule is

Accepted Answer

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

Question 11

According to the VSEPR model, a molecule with the general formula AB2 with two lone pairs on the central atom will have a _____ molecular geometry.

Accepted Answer

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

Question 12

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) octahedral 
A) trigonal planar 
B) trigonal pyramidal 
C) tetrahedral 
D) trigonal bipyramidal 
E) octahedral

Question 13

Using the VSEPR model, predict the molecular geometry around the central atom in PO43−.

Accepted Answer

A) trigonal planar 
B) trigonal pyramidal 
C) tetrahedral 
D) trigonal bipyramidal 
E) octahedral 
A) trigonal planar 
B) trigonal pyramidal 
C) tetrahedral 
D) trigonal bipyramidal 
E) octahedral

Question 14

The Lewis structure for CS2 is:

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 15

What is the number of lone electron pairs on the central atom of a molecule having a trigonal pyramidal molecular geometry, such as NH3?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 0 
E) 4 
A) 1 
B) 2 
C) 3 
D) 0 
E) 4

Question 16

Which one of the following molecules is polar?

Accepted Answer

A) CH4 
B) CHBr3 
C) F2 
D) CBr4 
E) CO2 
A) CH4 
B) CHBr3 
C) F2 
D) CBr4 
E) CO2

Question 17

In which one of the following is the best Lewis structure a resonance structure?

Accepted Answer

A) SO3 
B) BF3 
C) I3− 
D) SCO (C = central atom) 
E) SO32− 
A) SO3 
B) BF3 
C) I3− 
D) SCO (C = central atom) 
E) SO32−

Question 18

The strongest intermolecular interactions between ethyl alcohol (CH3CH2OH) molecules arise from

Accepted Answer

A) dipole-dipole forces. 
B) London dispersion forces. 
C) hydrogen bonding. 
D) ion-dipole interactions. 
E) carbon-oxygen bonds. 
A) dipole-dipole forces. 
B) London dispersion forces. 
C) hydrogen bonding. 
D) ion-dipole interactions. 
E) carbon-oxygen bonds.

Question 19

For which of the following pure substances are the intermolecular interactions entirely due to dispersion forces?

Accepted Answer

A) C2H6 
B) CH3OCH3 
C) NO2 
D) H2S 
E) Ca(NO3)2 
A) C2H6 
B) CH3OCH3 
C) NO2 
D) H2S 
E) Ca(NO3)2

Question 20

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) 4 
A) 1 
B) 2 
C) 3 
D) 0 
E) 4

Select the correct Lewis structure for nitrogen trifluoride, NF₃.

What is the predicted molecular geometry of the CH₄ molecule according to the VSEPR model?

Which substance will exhibit hydrogen bonding between molecules?

The strongest intermolecular interactions between hydrogen fluoride (HF) molecules arise from

What is wrong with this Lewis structure?

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

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

What does the abbreviation VSEPR stand for?

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

According to the VSEPR model, the predicted molecular geometry of the SO₃ molecule is

According to the VSEPR model, a molecule with the general formula AB₂ with two lone pairs on the central atom will have a _____ molecular geometry.

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

Using the VSEPR model, predict the molecular geometry around the central atom in PO₄³⁻.

The Lewis structure for CS₂ is:

What is the number of lone electron pairs on the central atom of a molecule having a trigonal pyramidal molecular geometry, such as NH₃?

Which one of the following molecules is polar?

In which one of the following is the best Lewis structure a resonance structure?

The strongest intermolecular interactions between ethyl alcohol (CH₃CH₂OH) molecules arise from

For which of the following pure substances are the intermolecular interactions entirely due to dispersion forces?

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

Atoms and Elements

Electrons and the Periodic Table

Compounds and Chemical Bonds

How Chemists Use Numbers

The Mole and Chemical Formulas

Solids, Liquids, and Phase Changes

Gases

Physical Properties of Solutions

Chemical Reactions and Chemical Equations

Using Balanced Chemical Equations

Acids and Bases

Equilibrium

Organic Chemistry

Biochemistry

Nuclear Chemistry

Electrochemistry

Filters

Exam 6: Molecular Shape

Select the correct Lewis structure for nitrogen trifluoride, NF3.

What is the predicted molecular geometry of the CH4 molecule according to the VSEPR model?

Which substance will exhibit hydrogen bonding between molecules?

The strongest intermolecular interactions between hydrogen fluoride (HF) molecules arise from

What is wrong with this Lewis structure?

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

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

What does the abbreviation VSEPR stand for?

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

According to the VSEPR model, the predicted molecular geometry of the SO3 molecule is

According to the VSEPR model, a molecule with the general formula AB2 with two lone pairs on the central atom will have a _____ molecular geometry.

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

Using the VSEPR model, predict the molecular geometry around the central atom in PO43−.

The Lewis structure for CS2 is:

What is the number of lone electron pairs on the central atom of a molecule having a trigonal pyramidal molecular geometry, such as NH3?

Which one of the following molecules is polar?

In which one of the following is the best Lewis structure a resonance structure?

The strongest intermolecular interactions between ethyl alcohol (CH3CH2OH) molecules arise from

For which of the following pure substances are the intermolecular interactions entirely due to dispersion forces?

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

Atoms and Elements

Electrons and the Periodic Table

Compounds and Chemical Bonds

How Chemists Use Numbers

The Mole and Chemical Formulas

Solids, Liquids, and Phase Changes

Gases

Physical Properties of Solutions

Chemical Reactions and Chemical Equations

Using Balanced Chemical Equations

Acids and Bases

Equilibrium

Organic Chemistry

Biochemistry

Nuclear Chemistry

Electrochemistry

Filters

Select the correct Lewis structure for nitrogen trifluoride, NF₃.

What is the predicted molecular geometry of the CH₄ molecule according to the VSEPR model?

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

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

According to the VSEPR model, the predicted molecular geometry of the SO₃ molecule is

According to the VSEPR model, a molecule with the general formula AB₂ with two lone pairs on the central atom will have a _____ molecular geometry.

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

Using the VSEPR model, predict the molecular geometry around the central atom in PO₄³⁻.

The Lewis structure for CS₂ is:

What is the number of lone electron pairs on the central atom of a molecule having a trigonal pyramidal molecular geometry, such as NH₃?

The strongest intermolecular interactions between ethyl alcohol (CH₃CH₂OH) molecules arise from

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