Question 1

Predict the ideal bond angles around carbon in C2I2 using the molecular shape given by the VSEPR theory.

Accepted Answer

A) 90° 
B) 109° 
C) 120° 
D) 180° 
E) None of these choices is correct. 
A) 90° 
B) 109° 
C) 120° 
D) 180° 
E) None of these choices is correct.

Question 2

Oxygen difluoride is a powerful oxidizing and fluorinating agent.Select its Lewis structure.

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) None of these choices is correct. 
A) a 
B) b 
C) c 
D) d 
E) None of these choices is correct.

Question 3

What is the molecular shape of NH2Cl as predicted by the VSEPR theory?

Accepted Answer

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

Question 4

Use VSEPR theory to decide which one of the following molecules and ions will definitely have at least one 90° bond angle in it.(In each case except water,the central atom is the first one in the formula. )

Accepted Answer

A) AlCl4- 
B) NH3 
C) PCl5 
D) CO2 
E) H2O 
A) AlCl4- 
B) NH3 
C) PCl5 
D) CO2 
E) H2O

Question 5

Which one of the following molecules and ions will have a planar geometry?

Accepted Answer

A) PCl3 
B) BF4- 
C) XeF4 
D) BrF5 
E) H3O+ 
A) PCl3 
B) BF4- 
C) XeF4 
D) BrF5 
E) H3O+

Question 6

Use VSEPR theory to predict the electron group arrangement around iodine,the central atom in the ion IF2-.

Accepted Answer

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

Question 7

According to VSEPR theory,a molecule with the general formula AX4E2 will have a _____ molecular shape.

Accepted Answer

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

Question 8

List the three important ways in which molecules can violate the octet rule,and in each case draw one Lewis structure of your choice as an example.

Accepted Answer

Electron-deficient molecules have fewer

Question 9

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 10

What is the molecular shape of NO2- as predicted by the VSEPR theory?

Accepted Answer

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

Question 11

Select the Lewis structure in which formal charges are minimized for the periodate anion,IO4-.

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Question 12

A molecule which contains polar bonds will always have a dipole moment.

Accepted Answer

A) True 
 B)False

Question 13

What is the molecular shape of SiF62- as predicted by the VSEPR theory?

Accepted Answer

A) trigonal bipyramidal 
B) hexagonal 
C) tetrahedral 
D) see-saw 
E) octahedral 
A) trigonal bipyramidal 
B) hexagonal 
C) tetrahedral 
D) see-saw 
E) octahedral

Question 14

According to VSEPR theory,a molecule with the general formula AX2E3 will have a _____ molecular shape.

Accepted Answer

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

Question 15

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 16

What is the molecular shape of ClO3F as predicted by the VSEPR theory?

Accepted Answer

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

Question 17

According to VSEPR theory,a molecule with the general formula AX5E will have a ______ molecular shape.

Accepted Answer

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

Question 18

Boron never achieves an octet in any of its compounds.

Accepted Answer

A) True 
 B)False

Question 19

In which one of the following structures does the central atom have a formal charge of +2?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Question 20

Select the best Lewis structure for ClCN.

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Exam 10: The Shapes of Molecules

Predict the ideal bond angles around carbon in C2I2 using the molecular shape given by the VSEPR theory.

Oxygen difluoride is a powerful oxidizing and fluorinating agent.Select its Lewis structure.

What is the molecular shape of NH2Cl as predicted by the VSEPR theory?

Use VSEPR theory to decide which one of the following molecules and ions will definitely have at least one 90° bond angle in it.(In each case except water,the central atom is the first one in the formula. )

Which one of the following molecules and ions will have a planar geometry?

Use VSEPR theory to predict the electron group arrangement around iodine,the central atom in the ion IF2-.

According to VSEPR theory,a molecule with the general formula AX4E2 will have a _____ molecular shape.

List the three important ways in which molecules can violate the octet rule,and in each case draw one Lewis structure of your choice as an example.

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

What is the molecular shape of NO2- as predicted by the VSEPR theory?

Select the Lewis structure in which formal charges are minimized for the periodate anion,IO4-.

A molecule which contains polar bonds will always have a dipole moment.

What is the molecular shape of SiF62- as predicted by the VSEPR theory?

According to VSEPR theory,a molecule with the general formula AX2E3 will have a _____ molecular shape.

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

What is the molecular shape of ClO3F as predicted by the VSEPR theory?

According to VSEPR theory,a molecule with the general formula AX5E will have a ______ molecular shape.

Boron never achieves an octet in any of its compounds.

In which one of the following structures does the central atom have a formal charge of +2?

Select the best Lewis structure for ClCN.

Keys to the Study of Chemistry

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 Solutions

The Main-Group Elements: Applying Principles of Bonding and Structure

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 the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

Predict the ideal bond angles around carbon in C₂I₂ using the molecular shape given by the VSEPR theory.

What is the molecular shape of NH₂Cl as predicted by the VSEPR theory?

Use VSEPR theory to predict the electron group arrangement around iodine,the central atom in the ion IF₂^-.

According to VSEPR theory,a molecule with the general formula AX₄E₂ will have a _____ molecular shape.

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

What is the molecular shape of NO₂^- as predicted by the VSEPR theory?

Select the Lewis structure in which formal charges are minimized for the periodate anion,IO₄^-.

What is the molecular shape of SiF₆^2- as predicted by the VSEPR theory?

According to VSEPR theory,a molecule with the general formula AX₂E₃ will have a _____ molecular shape.

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

What is the molecular shape of ClO₃F as predicted by the VSEPR theory?

According to VSEPR theory,a molecule with the general formula AX₅E will have a ______ molecular shape.