Question 1

Valence bond theory predicts that tin will use __________ hybrid orbitals in SnCl3−.

Accepted Answer

A) sp 
B) sp 2 
C) sp 3 
D) sp 3 d 
E) sp 3 d 2 
A) sp 
B) sp 2 
C) sp 3 
D) sp 3 d 
E) sp 3 d 2

Question 2

Valence bond theory predicts that bromine will use __________ hybrid orbitals in BrF5.

Accepted Answer

A) sp 2 
B) sp 3 
C) sp 3 d 
D) sp 3 d 2 
E) None of these choices are correct. 
A) sp 2 
B) sp 3 
C) sp 3 d 
D) sp 3 d 2 
E) None of these choices are correct.

Question 3

In the valence bond treatment, overlap of an s orbital on one atom with an sp3 orbital on another atom can give rise to a σ bond.

Accepted Answer

A) True 
 B)False

Question 4

The nitrosonium ion, NO+, forms a number of interesting complexes with nickel, cobalt, and iron. According to molecular orbital theory, which of the following statements about NO+ is correct?

Accepted Answer

A) NO + has a bond order of 2 and is paramagnetic. 
B) NO + has a bond order of 2 and is diamagnetic. 
C) NO + has a bond order of 3 and is paramagnetic. 
D) NO + has a bond order of 3 and is diamagnetic. 
E) None of these choices are correct. 
A) NO + has a bond order of 2 and is paramagnetic. 
B) NO + has a bond order of 2 and is diamagnetic. 
C) NO + has a bond order of 3 and is paramagnetic. 
D) NO + has a bond order of 3 and is diamagnetic. 
E) None of these choices are correct.

Question 5

Valence bond theory predicts that sulfur will use __________ hybrid orbitals in sulfur dioxide, SO2.

Accepted Answer

A) sp 
B) sp 2 
C) sp 3 
D) sp 3 d 
E) sp 3 d 2 
A) sp 
B) sp 2 
C) sp 3 
D) sp 3 d 
E) sp 3 d 2

Question 6

Valence bond theory predicts that xenon will use __________ hybrid orbitals in XeOF4.

Accepted Answer

A) sp 
B) sp 2 
C) sp 3 
D) sp 3 d 
E) sp 3 d 2 
A) sp 
B) sp 2 
C) sp 3 
D) sp 3 d 
E) sp 3 d 2

Question 7

Valence bond theory predicts that bromine will use __________ hybrid orbitals in BrF3.

Accepted Answer

A) sp 2 
B) sp 3 
C) sp 3 d 
D) sp 4 
E) sp 3 d 2 
A) sp 2 
B) sp 3 
C) sp 3 d 
D) sp 4 
E) sp 3 d 2

Question 8

A molecule with the formula AX2 uses __________ to form its bonds.

Accepted Answer

A) sp hybrid orbitals 
B) sp 2 hybrid orbitals 
C) sp 3 hybrid orbitals 
D) sp 3 d hybrid orbitals 
E) sp 3 d 2 hybrid orbitals 
A) sp hybrid orbitals 
B) sp 2 hybrid orbitals 
C) sp 3 hybrid orbitals 
D) sp 3 d hybrid orbitals 
E) sp 3 d 2 hybrid orbitals

Question 9

Valence bond theory predicts that iodine will use __________ hybrid orbitals in ICl2−.

Accepted Answer

A) sp 2 
B) sp 3 
C) sp 3 d 
D) sp 3 d 2 
E) None of these choices are correct. 
A) sp 2 
B) sp 3 
C) sp 3 d 
D) sp 3 d 2 
E) None of these choices are correct.

Question 10

In molecular orbital theory, molecules with an even number of electrons will have bond orders which are whole numbers.

Accepted Answer

A) True 
 B)False

Question 11

One can safely assume that the 3s- and 3p-orbitals will form molecular orbitals similar to those formed when 2s- and 2p-orbitals interact. According to molecular orbital theory, what will be the bond order for the Cl2+ ion?

Accepted Answer

A) 0.5 
B) 1 
C) 1.5 
D) 2 
E) None of these choices are correct. 
A) 0.5 
B) 1 
C) 1.5 
D) 2 
E) None of these choices are correct.

Question 12

For which one of the following molecules is the indicated type of hybridization not appropriate for the central atom?

Accepted Answer

A) BeCl 2 sp 2 
B) SiH 4 sp 3 
C) BF 3 sp 2 
D) C 2H 2 sp 
E) H 2O sp 3 
A) BeCl 2 sp 2 
B) SiH 4 sp 3 
C) BF 3 sp 2 
D) C 2H 2 sp 
E) H 2O sp 3

Question 13

How many sigma and pi bonds, respectively, are in the molecule below? CH3CH2CHCHCH3

Accepted Answer

A) 16, 1 
B) 16, 0 
C) 15, 1 
D) 15, 0 
E) 14, 1 
A) 16, 1 
B) 16, 0 
C) 15, 1 
D) 15, 0 
E) 14, 1

Question 14

Hybrid orbitals of the sp3d type occur in sets of four.

Accepted Answer

A) True 
 B)False

Question 15

Valence bond theory explains the bonding in diatomic molecules such as HCl without resorting to the use of hybrid orbitals.

Accepted Answer

A) True 
 B)False

Question 16

According to valence bond theory, which of the following molecules involves sp2 hybridization of orbitals on the central atom? (central atom is bold)

Accepted Answer

A) C 2H 2 
B) C 2H 4 
C) C 2H 6 
D) CO 2 
E) H 2 O 
A) C 2H 2 
B) C 2H 4 
C) C 2H 6 
D) CO 2 
E) H 2 O

Question 17

In molecular orbital theory, combination of two 2p atomic orbitals may give rise to either σ orπ type molecular orbitals.

Accepted Answer

A) True 
 B)False

Question 18

A molecule with the formula AX4 uses __________ to form its bonds.

Accepted Answer

A) sp hybrid orbitals 
B) sp 2 hybrid orbitals 
C) sp 3 hybrid orbitals 
D) sp 3 d hybrid orbitals 
E) sp 3 d 2 hybrid orbitals 
A) sp hybrid orbitals 
B) sp 2 hybrid orbitals 
C) sp 3 hybrid orbitals 
D) sp 3 d hybrid orbitals 
E) sp 3 d 2 hybrid orbitals

Question 19

A molecule with the formula AX3E uses __________ to form its bonds.

Accepted Answer

A) s and p atomic orbitals 
B) sp 3 hybrid orbitals 
C) sp 2 hybrid orbitals 
D) sp hybrid orbitals 
E) sp 3 d 2 hybrid orbitals 
A) s and p atomic orbitals 
B) sp 3 hybrid orbitals 
C) sp 2 hybrid orbitals 
D) sp hybrid orbitals 
E) sp 3 d 2 hybrid orbitals

Question 20

Select the correct statement aboutπ - bonds in valence bond theory.

Accepted Answer

A) A π bond is stronger than a sigma bond. 
B) A π bond can hold 4 electrons, two above and two below the σ-bond axis. 
C) A carbon-carbon double bond consists of twoπ bonds. 
D) A π  bond is the same strength as a σ bond. 
E) A π  bond between two carbon atoms restricts rotation about the C-C axis. 
A) A π bond is stronger than a sigma bond. 
B) A π bond can hold 4 electrons, two above and two below the σ-bond axis. 
C) A carbon-carbon double bond consists of twoπ bonds. 
D) A π  bond is the same strength as a σ bond. 
E) A π  bond between two carbon atoms restricts rotation about the C-C axis.

Exam 11: Theories of Covalent Bonding

Valence bond theory predicts that tin will use __________ hybrid orbitals in SnCl3−.

Valence bond theory predicts that bromine will use __________ hybrid orbitals in BrF5.

In the valence bond treatment, overlap of an s orbital on one atom with an sp3 orbital on another atom can give rise to a σ bond.

The nitrosonium ion, NO+, forms a number of interesting complexes with nickel, cobalt, and iron. According to molecular orbital theory, which of the following statements about NO+ is correct?

Valence bond theory predicts that sulfur will use __________ hybrid orbitals in sulfur dioxide, SO2.

Valence bond theory predicts that xenon will use __________ hybrid orbitals in XeOF4.

Valence bond theory predicts that bromine will use __________ hybrid orbitals in BrF3.

A molecule with the formula AX2 uses __________ to form its bonds.

Valence bond theory predicts that iodine will use __________ hybrid orbitals in ICl2−.

In molecular orbital theory, molecules with an even number of electrons will have bond orders which are whole numbers.

One can safely assume that the 3s- and 3p-orbitals will form molecular orbitals similar to those formed when 2s- and 2p-orbitals interact. According to molecular orbital theory, what will be the bond order for the Cl2+ ion?

For which one of the following molecules is the indicated type of hybridization not appropriate for the central atom?

How many sigma and pi bonds, respectively, are in the molecule below? CH3CH2CHCHCH3

Hybrid orbitals of the sp3d type occur in sets of four.

Valence bond theory explains the bonding in diatomic molecules such as HCl without resorting to the use of hybrid orbitals.

According to valence bond theory, which of the following molecules involves sp2 hybridization of orbitals on the central atom? (central atom is bold)

In molecular orbital theory, combination of two 2p atomic orbitals may give rise to either σ orπ type molecular orbitals.

A molecule with the formula AX4 uses __________ to form its bonds.

A molecule with the formula AX3E uses __________ to form its bonds.

Select the correct statement aboutπ - bonds in valence bond theory.

Keys to the Study of 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

The Shapes of Molecules

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

Valence bond theory predicts that tin will use __________ hybrid orbitals in SnCl₃⁻.

Valence bond theory predicts that bromine will use __________ hybrid orbitals in BrF₅.

In the valence bond treatment, overlap of an s orbital on one atom with an sp³ orbital on another atom can give rise to a σ bond.

The nitrosonium ion, NO⁺, forms a number of interesting complexes with nickel, cobalt, and iron. According to molecular orbital theory, which of the following statements about NO⁺ is correct?

Valence bond theory predicts that sulfur will use __________ hybrid orbitals in sulfur dioxide, SO₂.

Valence bond theory predicts that xenon will use __________ hybrid orbitals in XeOF₄.

Valence bond theory predicts that bromine will use __________ hybrid orbitals in BrF₃.

A molecule with the formula AX₂ uses __________ to form its bonds.

Valence bond theory predicts that iodine will use __________ hybrid orbitals in ICl₂⁻.

One can safely assume that the 3s- and 3p-orbitals will form molecular orbitals similar to those formed when 2s- and 2p-orbitals interact. According to molecular orbital theory, what will be the bond order for the Cl₂⁺ ion?

How many sigma and pi bonds, respectively, are in the molecule below? CH₃CH₂CHCHCH₃

Hybrid orbitals of the sp³d type occur in sets of four.

According to valence bond theory, which of the following molecules involves sp² hybridization of orbitals on the central atom? (central atom is bold)

A molecule with the formula AX₄ uses __________ to form its bonds.

A molecule with the formula AX₃E uses __________ to form its bonds.