Question 1

Use VSEPR theory to decide which one of the following ions and molecules is likely to be planar. (The central atom is always first in the formula.)

Accepted Answer

A)  BrF3 
B)  H3O+ 
C)  PCl3 
D)  SO42- 
E)  SF4 
A)  BrF3 
B)  H3O+ 
C)  PCl3 
D)  SO42- 
E)  SF4

Question 2

According to VSEPR theory, a molecule with the general formula AX5 will have a ______ molecular shape.

Accepted Answer

A)  tetrahedral 
B)  trigonal planar 
C)  trigonal pyramidal 
D)  trigonal bipyramidal 
E)  see-saw 
A)  tetrahedral 
B)  trigonal planar 
C)  trigonal pyramidal 
D)  trigonal bipyramidal 
E)  see-saw

Question 3

What is the molecular shape of ClF4- as predicted by the VSEPR theory?

Accepted Answer

A)  square pyramidal 
B)  square planar 
C)  see-saw 
D)  octahedral 
E)  tetrahedral 
A)  square pyramidal 
B)  square planar 
C)  see-saw 
D)  octahedral 
E)  tetrahedral

Question 4

Predict the ideal bond angles in FNO using the molecular shape given by the VSEPR theory.

Accepted Answer

A)  90° 
B)  109° 
C)  120° 
D)  180° 
E)  between 120 and 180° 
A)  90° 
B)  109° 
C)  120° 
D)  180° 
E)  between 120 and 180°

Question 5

Predict the ideal bond angles in AsCl3 using the molecular shape given by the VSEPR theory.

Accepted Answer

A)  90° 
B)  109° 
C)  120° 
D)  180° 
E)  between 110 and 120° 
A)  90° 
B)  109° 
C)  120° 
D)  180° 
E)  between 110 and 120°

Question 6

Use VSEPR theory to decide which one of the following molecules and ions will have a trigonal pyramidal geometry. (The central atom is always first in the formula.)

Accepted Answer

A)  PCl3 
B)  BF3 
C)  SO3 
D)  BrF3 
E)  CO32- 
A)  PCl3 
B)  BF3 
C)  SO3 
D)  BrF3 
E)  CO32-

Question 7

All possible resonance structures contribute equally to the resonance hybrid.

Accepted Answer

A) True 
 B)False

Question 8

In which of the following does the nitrogen atom have a formal charge of -1?

Accepted Answer

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

Question 9

In which one of the following species is the central atom (the first atom in the formula) likely to violate the octet rule?

Accepted Answer

A)  BF4- 
B)  XeO3 
C)  SiCl4 
D)  NH3 
E)  CH2Cl2 
A)  BF4- 
B)  XeO3 
C)  SiCl4 
D)  NH3 
E)  CH2Cl2

Question 10

Phosphoryl iodide is used in the preparation of organophosphorus derivatives and phosphate esters. Select the Lewis structure for POI3 that minimizes formal charges.

Accepted Answer

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

Question 11

According to VSEPR theory, a molecule with the general formula AX3 will have a ______ molecular shape.

Accepted Answer

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

Question 12

What is the molecular shape of N2O as predicted by the VSEPR theory?

Accepted Answer

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

Question 13

What is the molecular shape of SCl3F as predicted by the VSEPR theory?

Accepted Answer

A)  linear 
B)  bent 
C)  see-saw 
D)  T-shaped 
E)  trigonal pyramidal 
A)  linear 
B)  bent 
C)  see-saw 
D)  T-shaped 
E)  trigonal pyramidal

Question 14

What is the molecular shape of the thiocyanate anion, SCN-, as predicted by the VSEPR theory? (Carbon is the central atom.)

Accepted Answer

A)  linear 
B)  bent 
C)  angular 
D)  trigonal 
E)  None of these choices are correct. 
A)  linear 
B)  bent 
C)  angular 
D)  trigonal 
E)  None of these choices are correct.

Question 15

According to VSEPR theory, a molecule with the general formula AX3E will have a _____ molecular shape.

Accepted Answer

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

Question 16

What is the molecular shape of ClF2- as predicted by the VSEPR theory?

Accepted Answer

A)  linear 
B)  bent 
C)  see-saw 
D)  T-shaped 
E)  L-shaped 
A)  linear 
B)  bent 
C)  see-saw 
D)  T-shaped 
E)  L-shaped

Question 17

Which one of the following Lewis structures is definitely incorrect?

Accepted Answer

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

Question 18

Predict the ideal bond angles in GeCl4 using the molecular shape given by the VSEPR theory.

Accepted Answer

A)  90° 
B)  109° 
C)  120° 
D)  180° 
E)  < 90° 
A)  90° 
B)  109° 
C)  120° 
D)  180° 
E)  < 90°

Question 19

According to VSEPR theory, a molecule with the general formula AX2E will have a ______ molecular shape.

Accepted Answer

A)  bent 
B)  see-saw 
C)  trigonal planar 
D)  T-shaped 
E)  trigonal pyramidal 
A)  bent 
B)  see-saw 
C)  trigonal planar 
D)  T-shaped 
E)  trigonal pyramidal

Question 20

Which of the following molecules has a net dipole moment?

Accepted Answer

A)  BeCl2 
B)  SF2 
C)  KrF2 
D)  CO2 
E)  CCl4 
A)  BeCl2 
B)  SF2 
C)  KrF2 
D)  CO2 
E)  CCl4

Exam 10: The Shapes of Molecules

Use VSEPR theory to decide which one of the following ions and molecules is likely to be planar. (The central atom is always first in the formula.)

According to VSEPR theory, a molecule with the general formula AX5 will have a ______ molecular shape.

What is the molecular shape of ClF4- as predicted by the VSEPR theory?

Predict the ideal bond angles in FNO using the molecular shape given by the VSEPR theory.

Predict the ideal bond angles in AsCl3 using the molecular shape given by the VSEPR theory.

Use VSEPR theory to decide which one of the following molecules and ions will have a trigonal pyramidal geometry. (The central atom is always first in the formula.)

All possible resonance structures contribute equally to the resonance hybrid.

In which of the following does the nitrogen atom have a formal charge of -1?

In which one of the following species is the central atom (the first atom in the formula) likely to violate the octet rule?

Phosphoryl iodide is used in the preparation of organophosphorus derivatives and phosphate esters. Select the Lewis structure for POI3 that minimizes formal charges.

According to VSEPR theory, a molecule with the general formula AX3 will have a ______ molecular shape.

What is the molecular shape of N2O as predicted by the VSEPR theory?

What is the molecular shape of SCl3F as predicted by the VSEPR theory?

What is the molecular shape of the thiocyanate anion, SCN-, as predicted by the VSEPR theory? (Carbon is the central atom.)

According to VSEPR theory, a molecule with the general formula AX3E will have a _____ molecular shape.

What is the molecular shape of ClF2- as predicted by the VSEPR theory?

Which one of the following Lewis structures is definitely incorrect?

Predict the ideal bond angles in GeCl4 using the molecular shape given by the VSEPR theory.

According to VSEPR theory, a molecule with the general formula AX2E will have a ______ molecular shape.

Which of the following molecules has a net dipole moment?

Keys to Studying Chemistry Definitions, Units, and Problem Solving

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

Theories of Covalent Bonding

Intermolecular Forces Liquids, Solids, and Phase Changes

The Properties of Mixtures Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics Rates and Mechanisms of Chemical Reactions

Equilibrium the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics Entropy, Free Energy, and Reaction Direction

Electrochemistry Chemical Change and Electrical Work

The Elements in Nature and Industry

Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

According to VSEPR theory, a molecule with the general formula AX₅ will have a ______ molecular shape.

What is the molecular shape of ClF_4- as predicted by the VSEPR theory?

Predict the ideal bond angles in AsCl₃ using the molecular shape given by the VSEPR theory.

Phosphoryl iodide is used in the preparation of organophosphorus derivatives and phosphate esters. Select the Lewis structure for POI₃ that minimizes formal charges.

According to VSEPR theory, a molecule with the general formula AX₃ will have a ______ molecular shape.

What is the molecular shape of N₂O as predicted by the VSEPR theory?

What is the molecular shape of SCl₃F as predicted by the VSEPR theory?

What is the molecular shape of the thiocyanate anion, SCN^-, as predicted by the VSEPR theory? (Carbon is the central atom.)

According to VSEPR theory, a molecule with the general formula AX₃E will have a _____ molecular shape.

What is the molecular shape of ClF₂^- as predicted by the VSEPR theory?

Predict the ideal bond angles in GeCl₄ using the molecular shape given by the VSEPR theory.

According to VSEPR theory, a molecule with the general formula AX₂E will have a ______ molecular shape.