Question 1

A molecule with the formula AX4E2 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 2

The lone pair of electrons on sulfur in the sulfite ion (SO32−) is in

Accepted Answer

A) a p orbital. 
B) an s orbital. 
C) an sp 2 hybrid orbital. 
D) an sp 3 hybrid orbital. 
E) none of these orbital types. 
A) a p orbital. 
B) an s orbital. 
C) an sp 2 hybrid orbital. 
D) an sp 3 hybrid orbital. 
E) none of these orbital types.

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

In the valence bond treatment, a π bond is formed when two 2p orbitals overlap side to side.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following statements relating to molecular orbital (MO) theory is incorrect?

Accepted Answer

A) Combination of two atomic orbitals produces one bonding and one antibonding MO. 
B) A bonding MO is lower in energy than the two atomic orbitals from which it is formed. 
C) Combination of two 2p orbitals may result in either σ orπ MOs. 
D) A species with a bond order of zero will not be stable. 
E) In a stable molecule having an even number of electrons, all electrons must be paired. 
A) Combination of two atomic orbitals produces one bonding and one antibonding MO. 
B) A bonding MO is lower in energy than the two atomic orbitals from which it is formed. 
C) Combination of two 2p orbitals may result in either σ orπ MOs. 
D) A species with a bond order of zero will not be stable. 
E) In a stable molecule having an even number of electrons, all electrons must be paired.

Question 6

Overlap of two sp2 hybrid orbitals produces a π bond.

Accepted Answer

A) True 
 B)False

Question 7

Valence bond theory is able to explain why molecular oxygen is paramagnetic.

Accepted Answer

A) True 
 B)False

Question 8

According to valence bond theory, which orbitals on N and H overlap in the NH3 molecule?

Accepted Answer

A) 2 p on N overlaps with 2 s on H 
B) 2 p on N overlaps with 1 s on H 
C) 2 s on N overlaps with 1 s on H 
D) sp 3 on N overlaps with sp on H 
E) sp 3 on N overlaps with 1 s on H 
A) 2 p on N overlaps with 2 s on H 
B) 2 p on N overlaps with 1 s on H 
C) 2 s on N overlaps with 1 s on H 
D) sp 3 on N overlaps with sp on H 
E) sp 3 on N overlaps with 1 s on H

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

The lone pair of electrons on sulfur in the sulfite ion (SO₃²⁻) is in

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

In the valence bond treatment, a π bond is formed when two 2p orbitals overlap side to side.

Which of the following statements relating to molecular orbital (MO) theory is incorrect?

Overlap of two sp² hybrid orbitals produces a π bond.

Valence bond theory is able to explain why molecular oxygen is paramagnetic.

According to valence bond theory, which orbitals on N and H overlap in the NH₃ molecule?

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

Exam 11: Theories of Covalent Bonding

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

The lone pair of electrons on sulfur in the sulfite ion (SO32−) is in

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

In the valence bond treatment, a π bond is formed when two 2p orbitals overlap side to side.

Which of the following statements relating to molecular orbital (MO) theory is incorrect?

Overlap of two sp2 hybrid orbitals produces a π bond.

Valence bond theory is able to explain why molecular oxygen is paramagnetic.

According to valence bond theory, which orbitals on N and H overlap in the NH3 molecule?

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

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

The lone pair of electrons on sulfur in the sulfite ion (SO₃²⁻) is in

Overlap of two sp² hybrid orbitals produces a π bond.

According to valence bond theory, which orbitals on N and H overlap in the NH₃ molecule?