Question 1

In one sentence state how molecular orbitals are usually obtained.

Accepted Answer

By the linear combin

Question 2

A molecule with the formula AX3 uses __________ to form its bonds.

Accepted Answer

A) sp hybrid orbitals 
B) sp2 hybrid orbitals 
C) sp3 hybrid orbitals 
D) sp3d hybrid orbitals 
E) sp3d2 hybrid orbitals 
A) sp hybrid orbitals 
B) sp2 hybrid orbitals 
C) sp3 hybrid orbitals 
D) sp3d hybrid orbitals 
E) sp3d2 hybrid orbitals

Question 3

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

Accepted Answer

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

Question 4

According to valence bond theory,overlap of bonding orbitals of atoms will weaken a bond,due to electron-electron repulsion.

Accepted Answer

A) True 
 B)False

Question 5

Atoms of period 3 and beyond can undergo sp3d 2 hybridization,but atoms of period 2 cannot.

Accepted Answer

A) True 
 B)False

Question 6

A molecule with the formula AX4E2 uses _________ to form its bonds.

Accepted Answer

A) sp hybrid orbitals 
B) sp2 hybrid orbitals 
C) sp3 hybrid orbitals 
D) sp3d hybrid orbitals 
E) sp3d2 hybrid orbitals 
A) sp hybrid orbitals 
B) sp2 hybrid orbitals 
C) sp3 hybrid orbitals 
D) sp3d hybrid orbitals 
E) sp3d2 hybrid orbitals

Question 7

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

Accepted Answer

A) s and p atomic orbitals 
B) sp3 hybrid orbitals 
C) sp2 hybrid orbitals 
D) sp hybrid orbitals 
E) sp3d2 hybrid orbitals 
A) s and p atomic orbitals 
B) sp3 hybrid orbitals 
C) sp2 hybrid orbitals 
D) sp hybrid orbitals 
E) sp3d2 hybrid orbitals

Question 8

In the context of molecular orbital (MO)theory,explain how atomic p orbitals can give rise to:
a.a  $\sigma$ MO
b.a $\pi$ MO

Accepted Answer

a.A  @#LAT-DLM& MO arises when atomic p orbitals w

Question 9

In molecular orbital theory,combination of two atomic orbitals produces two molecular orbitals.

Accepted Answer

A) True 
 B)False

Question 10

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  $\sigma$ bond.

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

A) sp 
B) sp2 
C) sp3 
D) sp3d 
E) sp3d2 
A) sp 
B) sp2 
C) sp3 
D) sp3d 
E) sp3d2

Question 12

In not more than two sentences,explain when and why chemists make use of the concept of hybridization.

Accepted Answer

Chemists postulate hybridizati

Question 13

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

Accepted Answer

A) sp2 
B) sp3 
C) sp3d 
D) sp3d2 
E) None of these choices is correct. 
A) sp2 
B) sp3 
C) sp3d 
D) sp3d2 
E) None of these choices is correct.

Question 14

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 15

When PCl5 solidifies it forms PCl4+ cations and PCl6-anions.According to valence bond theory,what hybrid orbitals are used by phosphorus in the PCl4+ cations?

Accepted Answer

A) sp 
B) sp2 
C) sp3 
D) sp3d 
E) sp3d2 
A) sp 
B) sp2 
C) sp3 
D) sp3d 
E) sp3d2

Question 16

In applying molecular orbital theory,the bond order is calculated in the same way as with Lewis structures.

Accepted Answer

A) True 
 B)False

Question 17

Explain what is meant by the term "bond order" and describe how it can be calculated using the information in a molecular orbital energy level diagram.

Accepted Answer

The bond order in MO theory is the net n

Question 18

Valence bond theory predicts that iodine will use _____ hybrid orbitals in ICl2-.

Accepted Answer

A) sp2 
B) sp3 
C) sp3d 
D) sp3d2 
E) None of these choices is correct. 
A) sp2 
B) sp3 
C) sp3d 
D) sp3d2 
E) None of these choices is correct.

Question 19

Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion,CO32-.

Accepted Answer

A) sp 
B) sp2 
C) sp3 
D) sp3d 
E) sp3d2 
A) sp 
B) sp2 
C) sp3 
D) sp3d 
E) sp3d2

Question 20

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

Accepted Answer

A) sp hybrid orbitals 
B) sp2 hybrid orbitals 
C) sp3 hybrid orbitals 
D) sp3d hybrid orbitals 
E) sp3d2 hybrid orbitals 
A) sp hybrid orbitals 
B) sp2 hybrid orbitals 
C) sp3 hybrid orbitals 
D) sp3d hybrid orbitals 
E) sp3d2 hybrid orbitals

Exam 11: Theories of Covalent Bonding

In one sentence state how molecular orbitals are usually obtained.

A molecule with the formula AX3 uses __________ to form its bonds.

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

According to valence bond theory,overlap of bonding orbitals of atoms will weaken a bond,due to electron-electron repulsion.

Atoms of period 3 and beyond can undergo sp3d 2 hybridization,but atoms of period 2 cannot.

A molecule with the formula AX4E2 uses _________ to form its bonds.

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

In the context of molecular orbital (MO)theory,explain how atomic p orbitals can give rise to: a.a σ\sigmaσ MO b.a π\piπ MO

In molecular orbital theory,combination of two atomic orbitals produces two molecular orbitals.

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\sigmaσ bond.

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

In not more than two sentences,explain when and why chemists make use of the concept of hybridization.

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

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

When PCl5 solidifies it forms PCl4+ cations and PCl6-anions.According to valence bond theory,what hybrid orbitals are used by phosphorus in the PCl4+ cations?

In applying molecular orbital theory,the bond order is calculated in the same way as with Lewis structures.

Explain what is meant by the term "bond order" and describe how it can be calculated using the information in a molecular orbital energy level diagram.

Valence bond theory predicts that iodine will use _____ hybrid orbitals in ICl2-.

Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion,CO32-.

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

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

The Shapes of Molecules

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

A molecule with the formula AX₃ uses __________ to form its bonds.

Atoms of period 3 and beyond can undergo sp³d ² hybridization,but atoms of period 2 cannot.

A molecule with the formula AX₄E₂ uses _________ to form its bonds.

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

In the context of molecular orbital (MO)theory,explain how atomic p orbitals can give rise to: a.a $\sigma$ MO b.a $\pi$ MO

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 $\sigma$ bond.

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

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

When PCl₅ solidifies it forms PCl₄⁺ cations and PCl₆^-anions.According to valence bond theory,what hybrid orbitals are used by phosphorus in the PCl₄⁺ cations?

Valence bond theory predicts that iodine will use _____ hybrid orbitals in ICl₂^-.

Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion,CO₃^2-.

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