Question 1

Write a note on the hybridization of nitrogen in NH3.

Accepted Answer

The bonding in molecules such as NH₃, whi

Question 2

The σ1s orbital contains a region of zero electron probability.

Accepted Answer

A) True 
 B)False

Question 3

The interaction between atomic orbitals is greatest when they have the same energy.

Accepted Answer

A) True 
 B)False

Question 4

_____ is the excitation of an electron from a filled ns2 atomic orbital to an empty np or (n − 1)d valence orbital.

Accepted Answer

A)  Distillation 
B)  Esterfication 
C)  Neutralization 
D)  Hybridization 
E)  Promotion 
A)  Distillation 
B)  Esterfication 
C)  Neutralization 
D)  Hybridization 
E)  Promotion

Question 5

HCl will have a skewed molecular orbital energy-level diagram.

Accepted Answer

A) True 
 B)False

Question 6

A diatomic molecule with a double bond will have a bond order of two.

Accepted Answer

A) True 
 B)False

Question 7

How many electrons are involved in the formation of resonance bonds in an HCO2- ion?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 8

Write a note on the hybridization using d orbitals.

Accepted Answer

The bonding in compounds with central at

Question 9

Which of the following species is the most stable as predicted by the molecular orbital theory?

Accepted Answer

A)  H 
B)  H+ 
C)  H2 
D)  H2+ 
E)  H- 
A)  H 
B)  H+ 
C)  H2 
D)  H2+ 
E)  H-

Question 10

_____ molecular orbitals have approximately the same energy as the parent atomic orbitals.

Accepted Answer

The answer of _____ molecular orbitals have approximately the same...

Question 11

A molecule must have as many molecular orbitals as there are atomic orbitals.

Accepted Answer

A) True 
 B)False

Question 12

Diatomic molecules with the bond order _____ have the greatest bond length.

Accepted Answer

A)  1 
B)  0.5 
C)  2 
D)  0 
E)  1.5 
A)  1 
B)  0.5 
C)  2 
D)  0 
E)  1.5

Question 13

What is the number of molecular orbitals formed by the interaction of two 1s atomic orbitals?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 14

Which of the following types of hybridization is seen in a molecule of methane?

Accepted Answer

A)  no hybridization 
B)  sp 
C)  sp2 
D)  sp3 
E)  sp3d 
A)  no hybridization 
B)  sp 
C)  sp2 
D)  sp3 
E)  sp3d

Question 15

Which of the following molecules has an octahedral geometry?

Accepted Answer

A)  I3- 
B)  SF6 
C)  BrF5 
D)  PCl5 
E)  SF4 
A)  I3- 
B)  SF6 
C)  BrF5 
D)  PCl5 
E)  SF4

Question 16

The C-C bond length in acetylene is shorter than that in ethane.

Accepted Answer

A) True 
 B)False

Question 17

What is the bond order of a Cl2+ ion?

Accepted Answer

A)  0 
B)  0.5 
C)  1 
D)  1.5 
E)  3 
A)  0 
B)  0.5 
C)  1 
D)  1.5 
E)  3

Question 18

A CO2 molecule does not have any dipole moment.

Accepted Answer

A) True 
 B)False

Question 19

_____ diatomic molecules have a molecular orbital energy-level diagram that is skewed or tilted toward the more electronegative element.

Accepted Answer

The answer of _____ diatomic molecules have a molecular orbital...

Question 20

What is the hybridization of the central atom in SO42-?

Accepted Answer

A)  sp3 
B)  sp2 
C)  sp3d2 
D)  sp3d 
E)  sp3d3 
A)  sp3 
B)  sp2 
C)  sp3d2 
D)  sp3d 
E)  sp3d3

Exam 9: Molecular Geometry and Covalent Bonding Models

Write a note on the hybridization of nitrogen in NH3.

The σ1s orbital contains a region of zero electron probability.

The interaction between atomic orbitals is greatest when they have the same energy.

_____ is the excitation of an electron from a filled ns2 atomic orbital to an empty np or (n − 1)d valence orbital.

HCl will have a skewed molecular orbital energy-level diagram.

A diatomic molecule with a double bond will have a bond order of two.

How many electrons are involved in the formation of resonance bonds in an HCO2- ion?

Write a note on the hybridization using d orbitals.

Which of the following species is the most stable as predicted by the molecular orbital theory?

_____ molecular orbitals have approximately the same energy as the parent atomic orbitals.

A molecule must have as many molecular orbitals as there are atomic orbitals.

Diatomic molecules with the bond order _____ have the greatest bond length.

What is the number of molecular orbitals formed by the interaction of two 1s atomic orbitals?

Which of the following types of hybridization is seen in a molecule of methane?

Which of the following molecules has an octahedral geometry?

The C-C bond length in acetylene is shorter than that in ethane.

What is the bond order of a Cl2+ ion?

A CO2 molecule does not have any dipole moment.

_____ diatomic molecules have a molecular orbital energy-level diagram that is skewed or tilted toward the more electronegative element.

What is the hybridization of the central atom in SO42-?

Introduction to Chemistry

Molecules, Ions, and Chemical Formulas

Chemical Reactions

Reactions in Aqueous Solution

Energy Changes in Chemical Reactions

The Structure of Atoms

The Periodic Table and Periodic Trends

Ionic Versus Covalent Bonding

Gases

Liquids

Solids

Solutions

Chemical Kinetics

Chemical Equilibrium

Aqueous Acidbase Equilibriums

Solubility and Complexation Equilibriums

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Periodic Trends and the S-Block Elements

The P-Block Elements

The D-Block Elements

Organic Compounds

Filters

Write a note on the hybridization of nitrogen in NH₃.

The σ₁_s orbital contains a region of zero electron probability.

_____ is the excitation of an electron from a filled ns² atomic orbital to an empty np or (n − 1)d valence orbital.

How many electrons are involved in the formation of resonance bonds in an HCO₂^- ion?

What is the bond order of a Cl₂⁺ ion?

A CO₂ molecule does not have any dipole moment.

What is the hybridization of the central atom in SO₄^2-?