Question 1

Which of the following statements is TRUE?

Accepted Answer

A)  The total number of molecular orbitals formed doesn't always equal the number of atomic orbitals in the set. 
B)  A bond order of 0 represents a stable chemical bond. 
C)  When two atomic orbitals come together to form two molecular orbitals, one molecular orbital will be lower in energy than the two separate atomic orbitals and one molecular orbital will be higher in energy than the separate atomic orbitals. 
D)  Electrons placed in antibonding orbitals stabilize the ion/molecule. 
E)  All of the above are true. 
A)  The total number of molecular orbitals formed doesn't always equal the number of atomic orbitals in the set. 
B)  A bond order of 0 represents a stable chemical bond. 
C)  When two atomic orbitals come together to form two molecular orbitals, one molecular orbital will be lower in energy than the two separate atomic orbitals and one molecular orbital will be higher in energy than the separate atomic orbitals. 
D)  Electrons placed in antibonding orbitals stabilize the ion/molecule. 
E)  All of the above are true.

Question 2

Describe a sigma bond.

Accepted Answer

A)  side by side overlap of d orbitals 
B)  end to end overlap of p orbitals 
C)  s orbital overlapping with the side of a p orbital 
D)  overlap of two d orbitals 
E)  p orbital overlapping with an f orbital 
A)  side by side overlap of d orbitals 
B)  end to end overlap of p orbitals 
C)  s orbital overlapping with the side of a p orbital 
D)  overlap of two d orbitals 
E)  p orbital overlapping with an f orbital

Question 3

Give the electron geometry,molecular geometry,and hybridization for CH3-.

Accepted Answer

A)  eg = tetrahedral; mg = trigonal pyramidal; sp3 
B)  eg = tetrahedral; mg = bent; sp3 
C)  eg = trigonal pyramidal; mg = bent; sp3 
D)  eg = trigonal planar; mg = trigonal planar; sp2 
A)  eg = tetrahedral; mg = trigonal pyramidal; sp3 
B)  eg = tetrahedral; mg = bent; sp3 
C)  eg = trigonal pyramidal; mg = bent; sp3 
D)  eg = trigonal planar; mg = trigonal planar; sp2

Question 4

A molecule containing a central atom with sp3d2 hybridization has a(n)________ electron geometry.

Accepted Answer

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

Question 5

The hybrid orbital set used by the central atom in NH2Cl is

Accepted Answer

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

Question 6

Consider the following compound.How many sigma and pi bonds does it contain?
NCCH2COOH

Accepted Answer

A)  9 sigma, 4 pi 
B)  11 sigma, 2 pi 
C)  9 sigma, 2 pi 
D)  6 sigma, 2 pi 
E)  8 sigma, 3 pi 
A)  9 sigma, 4 pi 
B)  11 sigma, 2 pi 
C)  9 sigma, 2 pi 
D)  6 sigma, 2 pi 
E)  8 sigma, 3 pi

Question 7

Use the molecular orbital diagram shown to determine which of the following is MOST stable.

Accepted Answer

A)  F2 
B)  F22⁺ 
C)  Ne22⁺ 
D)  O22⁺ 
E)  F22⁻ 
A)  F2 
B)  F22⁺ 
C)  Ne22⁺ 
D)  O22⁺ 
E)  F22⁻

Question 8

Identify the number of electron groups around a molecule with sp3d2 hybridization.

Accepted Answer

A)  12 
B)  2 
C)  3 
D)  4 
E)  6 
A)  12 
B)  2 
C)  3 
D)  4 
E)  6

Question 9

Give the hybridization for the S in SF6.

Accepted Answer

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

Question 10

List the number of sigma bonds and pi bonds in a triple bond.

Accepted Answer

A)  1 sigma, 1 pi 
B)  2 sigma, 1 pi 
C)  2 sigma, 2 pi 
D)  1 sigma, 2 pi 
A)  1 sigma, 1 pi 
B)  2 sigma, 1 pi 
C)  2 sigma, 2 pi 
D)  1 sigma, 2 pi

Question 11

Identify the number of electron groups around a molecule with sp hybridization.

Accepted Answer

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

Question 12

Use the molecular orbital diagram shown to determine which of the following are paramagnetic.

Accepted Answer

A)  O22⁻ 
B)  Ne22⁺ 
C)  O22⁺ 
D)  F22⁺ 
E)  None of the above are paramagnetic. 
A)  O22⁻ 
B)  Ne22⁺ 
C)  O22⁺ 
D)  F22⁺ 
E)  None of the above are paramagnetic.

Question 13

The orbital hybridization on the carbon atoms in C O2 is

Accepted Answer

A)  sp. 
B)  sp2. 
C)  sp3. 
D)  sp3d2. 
A)  sp. 
B)  sp2. 
C)  sp3. 
D)  sp3d2.

Question 14

Give the electron geometry (eg),molecular geometry (mg),and hybridization for NH3.

Accepted Answer

A)  eg = tetrahedral, mg = trigonal planar, sp2 
B)  eg = trigonal pyramidal, mg = trigonal pyramidal, sp3 
C)  eg = tetrahedral, mg = trigonal pyramidal, sp3 
D)  eg = trigonal pyramidal, mg = tetrahedral, sp3 
E)  eg = trigonal planar, mg = trigonal planar, sp2 
A)  eg = tetrahedral, mg = trigonal planar, sp2 
B)  eg = trigonal pyramidal, mg = trigonal pyramidal, sp3 
C)  eg = tetrahedral, mg = trigonal pyramidal, sp3 
D)  eg = trigonal pyramidal, mg = tetrahedral, sp3 
E)  eg = trigonal planar, mg = trigonal planar, sp2

Question 15

How many of the following molecules have sp3d2 hybridization on the central atom?
Se Cl6 Xe Cl4 IF5 As Cl5

Accepted Answer

A)  1 
B)  3 
C)  0 
D)  2 
E)  4 
A)  1 
B)  3 
C)  0 
D)  2 
E)  4

Question 16

Consider the following compound.How many sigma and pi bonds does it contain?
CH3CHCHCO2H

Accepted Answer

A)  9 sigma, 4 pi 
B)  11 sigma, 2 pi 
C)  9 sigma, 2 pi 
D)  13 sigma, 2 pi 
E)  6 sigma, 2 pi 
A)  9 sigma, 4 pi 
B)  11 sigma, 2 pi 
C)  9 sigma, 2 pi 
D)  13 sigma, 2 pi 
E)  6 sigma, 2 pi

Question 17

Give the electron geometry (eg),molecular geometry (mg),and hybridization for XeF4.

Accepted Answer

A)  eg = tetrahedral, mg = tetrahedral, sp3 
B)  eg = trigonal pyramidal, mg = trigonal pyramidal, sp3 
C)  eg = octahedral, mg = square planar, sp3d2 
D)  eg = octahedral, mg = octahedral, sp3d2 
E)  eg = trigonal bipyramidal, mg = seesaw, sp3d 
A)  eg = tetrahedral, mg = tetrahedral, sp3 
B)  eg = trigonal pyramidal, mg = trigonal pyramidal, sp3 
C)  eg = octahedral, mg = square planar, sp3d2 
D)  eg = octahedral, mg = octahedral, sp3d2 
E)  eg = trigonal bipyramidal, mg = seesaw, sp3d

Question 18

Consider the molecule below.Determine the hybridization at each of the 3 labeled atoms.

Accepted Answer

A)  1 = sp2, 2 = sp3, 3 = sp2 
B)  1 = sp2, 2 = sp3, 3 = sp3 
C)  1 = sp3, 2 = sp3, 3 = sp3 
D)  1 = sp3, 2 = sp3, 3 = sp2 
E)  1 = sp , 2 = sp , 3 = sp2 
A)  1 = sp2, 2 = sp3, 3 = sp2 
B)  1 = sp2, 2 = sp3, 3 = sp3 
C)  1 = sp3, 2 = sp3, 3 = sp3 
D)  1 = sp3, 2 = sp3, 3 = sp2 
E)  1 = sp , 2 = sp , 3 = sp2

Question 19

Draw the Lewis structure for the molecule C3H4.How many sigma and pi bonds does it contain?

Accepted Answer

A)  7 sigma, 1 pi 
B)  8 sigma, 1 pi 
C)  6 sigma, 2 pi 
D)  10 sigma, 2 pi 
E)  8 sigma, 2 pi 
A)  7 sigma, 1 pi 
B)  8 sigma, 1 pi 
C)  6 sigma, 2 pi 
D)  10 sigma, 2 pi 
E)  8 sigma, 2 pi

Question 20

Give the hybridization for the C in HCN.

Accepted Answer

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

Exam 7: Chemical Bonding Ii

Which of the following statements is TRUE?

Describe a sigma bond.

Give the electron geometry,molecular geometry,and hybridization for CH3-.

A molecule containing a central atom with sp3d2 hybridization has a(n)________ electron geometry.

The hybrid orbital set used by the central atom in NH2Cl is

Consider the following compound.How many sigma and pi bonds does it contain? NCCH2COOH

Use the molecular orbital diagram shown to determine which of the following is MOST stable.

Identify the number of electron groups around a molecule with sp3d2 hybridization.

Give the hybridization for the S in SF6.

List the number of sigma bonds and pi bonds in a triple bond.

Identify the number of electron groups around a molecule with sp hybridization.

Use the molecular orbital diagram shown to determine which of the following are paramagnetic.

The orbital hybridization on the carbon atoms in C O2 is

Give the electron geometry (eg),molecular geometry (mg),and hybridization for NH3.

How many of the following molecules have sp3d2 hybridization on the central atom? Se Cl6 Xe Cl4 IF5 As Cl5

Consider the following compound.How many sigma and pi bonds does it contain? CH3CHCHCO2H

Give the electron geometry (eg),molecular geometry (mg),and hybridization for XeF4.

Consider the molecule below.Determine the hybridization at each of the 3 labeled atoms.

Draw the Lewis structure for the molecule C3H4.How many sigma and pi bonds does it contain?

Give the hybridization for the C in HCN.

Essentials: Units, Measurements, and Problem Solving

Atoms

The Quantum Mechanical Model of the Atom

Periodic Properties of the Elements

Molecules and Compounds

Chemical Bonding I

Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

Thermochemistry

Gases

Liquids, Solids, and Intermolecular Forces

Crystalline Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Transition Metals and Coordination Compounds

Filters

Give the electron geometry,molecular geometry,and hybridization for CH₃^-.

A molecule containing a central atom with sp³d² hybridization has a(n)________ electron geometry.

The hybrid orbital set used by the central atom in NH₂Cl is

Consider the following compound.How many sigma and pi bonds does it contain? NCCH₂COOH

Identify the number of electron groups around a molecule with sp³d² hybridization.

Give the hybridization for the S in SF₆.

The orbital hybridization on the carbon atoms in CO₂is

Give the electron geometry (eg),molecular geometry (mg),and hybridization for NH₃.

How many of the following molecules have sp³d² hybridization on the central atom? Se Cl₆ Xe Cl₄ IF₅ As Cl₅

Consider the following compound.How many sigma and pi bonds does it contain? CH₃CHCHCO₂H

Give the electron geometry (eg),molecular geometry (mg),and hybridization for XeF₄.

Draw the Lewis structure for the molecule C₃H₄.How many sigma and pi bonds does it contain?