Question 1

Consider the molecule below.Determine the molecular geometry at each of the 2 labeled carbons.

Accepted Answer

A)  C1 = tetrahedral, C2 = linear 
B)  C1 = trigonal planar, C2= bent 
C)  C1 = bent, C2 = trigonal planar 
D)  C1 = trigonal planar, C2 = tetrahedral 
E)  C1 = trigonal pyramidal, C2 = see-saw 
A)  C1 = tetrahedral, C2 = linear 
B)  C1 = trigonal planar, C2= bent 
C)  C1 = bent, C2 = trigonal planar 
D)  C1 = trigonal planar, C2 = tetrahedral 
E)  C1 = trigonal pyramidal, C2 = see-saw

Question 2

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined atom H2CO.

Accepted Answer

A)  eg = tetrahedral, mg = tetrahedral 
B)  eg = trigonal planar, eg = trigonal planar 
C)  eg = tetrahedral, mg = trigonal pyramidal 
D)  eg = trigonal bipyramidal, mg = trigonal pyramidal 
E)  eg = octahedral, mg = trigonal planar 
A)  eg = tetrahedral, mg = tetrahedral 
B)  eg = trigonal planar, eg = trigonal planar 
C)  eg = tetrahedral, mg = trigonal pyramidal 
D)  eg = trigonal bipyramidal, mg = trigonal pyramidal 
E)  eg = octahedral, mg = trigonal planar

Question 3

Consider the molecule below.Determine the hybridization at each of the 2 labeled carbons.

Accepted Answer

A)  C1 = sp3, C2 = sp2 
B)  C1 = sp2, C2 = sp  
C)  C1 = sp2, C2 = sp3d 
D)  C1 = sp3d , C2 = sp3d  
E)  C1 = sp2, C2 = sp3 
A)  C1 = sp3, C2 = sp2 
B)  C1 = sp2, C2 = sp  
C)  C1 = sp2, C2 = sp3d 
D)  C1 = sp3d , C2 = sp3d  
E)  C1 = sp2, C2 = sp3

Question 4

Determine the electron geometry (eg),molecular geometry (mg),and polarity of N2O (N central).

Accepted Answer

A)  eg = linear, mg = linear, nonpolar 
B)  eg = tetrahedral, mg = linear, polar 
C)  eg = tetrahedral, mg = bent, nonpolar 
D)  eg = linear, mg = linear, polar 
E)  eg = trigonal planar, mg = trigonal pyramidal, polar 
A)  eg = linear, mg = linear, nonpolar 
B)  eg = tetrahedral, mg = linear, polar 
C)  eg = tetrahedral, mg = bent, nonpolar 
D)  eg = linear, mg = linear, polar 
E)  eg = trigonal planar, mg = trigonal pyramidal, polar

Question 5

Explain why oil and water do not mix.

Accepted Answer

Water molecules are

Question 6

Draw the molecular orbital diagram shown to determine which of the following is paramagnetic.

Accepted Answer

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

Question 7

Using the VSEPR model,the electron-domain geometry of the central atom in NH4+ is

Accepted Answer

A)  linear. 
B)  trigonal planar. 
C)  tetrahedral. 
D)  trigonal bipyramidal. 
E)  octahedral. 
A)  linear. 
B)  trigonal planar. 
C)  tetrahedral. 
D)  trigonal bipyramidal. 
E)  octahedral.

Question 8

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined carbon in CH3F.

Accepted Answer

A)  eg = tetrahedral, mg = tetrahedral 
B)  eg = linear, mg = trigonal planar 
C)  eg = trigonal planar, mg = tetrahedral 
D)  eg = linear, mg = bent 
E)  eg = tetrahedral, mg = trigonal planar 
A)  eg = tetrahedral, mg = tetrahedral 
B)  eg = linear, mg = trigonal planar 
C)  eg = trigonal planar, mg = tetrahedral 
D)  eg = linear, mg = bent 
E)  eg = tetrahedral, mg = trigonal planar

Question 9

Give the molecular geometry and number of electron groups for BrF5.

Accepted Answer

A)  square planar, 6 electron groups 
B)  square pyramidal, 6 electron groups 
C)  T-shaped, 5 electron groups 
D)  octahedral, 6 electron groups 
E)  seesaw, 5 electron groups 
A)  square planar, 6 electron groups 
B)  square pyramidal, 6 electron groups 
C)  T-shaped, 5 electron groups 
D)  octahedral, 6 electron groups 
E)  seesaw, 5 electron groups

Question 10

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

Accepted Answer

A)  octahedral 
B)  trigonal pyramidal 
C)  tetrahedral 
D)  linear 
E)  square planar 
A)  octahedral 
B)  trigonal pyramidal 
C)  tetrahedral 
D)  linear 
E)  square planar

Question 11

Give the hybridization for the C in HCCH.

Accepted Answer

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

Question 12

Identify the hybridization for the carbons in benzene,C6H6.

Accepted Answer

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

Question 13

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

Accepted Answer

A)  1 = trigonal planar, 2 = tetrahedral, 3 = trigonal pyramidal 
B)  1 = tetrahedral, 2 = tetrahedral, 3 = tetrahedral 
C)  1 = trigonal planar, 2 = tetrahedral, 3 = tetrahedral 
D)  1 = tetrahedral, 2 = tetrahedral, 3 = trigonal planar 
E)  1 = trigonal planar, 2 = trigonal pyramidal, 3 = trigonal pyramidal 
A)  1 = trigonal planar, 2 = tetrahedral, 3 = trigonal pyramidal 
B)  1 = tetrahedral, 2 = tetrahedral, 3 = tetrahedral 
C)  1 = trigonal planar, 2 = tetrahedral, 3 = tetrahedral 
D)  1 = tetrahedral, 2 = tetrahedral, 3 = trigonal planar 
E)  1 = trigonal planar, 2 = trigonal pyramidal, 3 = trigonal pyramidal

Question 14

Place the following in order of increasing dipole moment. I.BCl3 II.BIF2  III.BClF2

Accepted Answer

A)  I < II = III 
B)  II < III < I 
C)  I < II < III 
D)  II < I < III 
E)  I < III < II 
A)  I < II = III 
B)  II < III < I 
C)  I < II < III 
D)  II < I < III 
E)  I < III < II

Question 15

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined atom CH3OH.

Accepted Answer

A)  eg = tetrahedral, mg = tetrahedral 
B)  eg = linear, eg = trigonal planar 
C)  eg = tetrahedral, mg = trigonal planar 
D)  eg = trigonal bipyramidal, mg = trigonal bipyramidal 
E)  eg = octahedral, mg = square planar 
A)  eg = tetrahedral, mg = tetrahedral 
B)  eg = linear, eg = trigonal planar 
C)  eg = tetrahedral, mg = trigonal planar 
D)  eg = trigonal bipyramidal, mg = trigonal bipyramidal 
E)  eg = octahedral, mg = square planar

Question 16

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 17

Determine the electron geometry (eg),molecular geometry (mg),and polarity of PCl3.

Accepted Answer

A)  eg = tetrahedral, mg = trigonal planar, nonpolar 
B)  eg = trigonal planar, mg = tetrahedral, polar 
C)  eg = linear, mg = linear, polar 
D)  eg = tetrahedral, mg = trigonal pyramidal, polar 
E)  eg = trigonal pyramidal, mg = trigonal pyramidal, nonpolar 
A)  eg = tetrahedral, mg = trigonal planar, nonpolar 
B)  eg = trigonal planar, mg = tetrahedral, polar 
C)  eg = linear, mg = linear, polar 
D)  eg = tetrahedral, mg = trigonal pyramidal, polar 
E)  eg = trigonal pyramidal, mg = trigonal pyramidal, nonpolar

Question 18

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

Accepted Answer

A)  1 sigma, 0 pi 
B)  0 sigma, 1 pi 
C)  1 sigma, 1 pi 
D)  1 sigma, 3 pi 
A)  1 sigma, 0 pi 
B)  0 sigma, 1 pi 
C)  1 sigma, 1 pi 
D)  1 sigma, 3 pi

Question 19

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

Accepted Answer

A)  7 sigma, 0 pi 
B)  8 sigma, 0 pi 
C)  6 sigma, 2 pi 
D)  10 sigma, 0 pi 
E)  8 sigma, 2 pi 
A)  7 sigma, 0 pi 
B)  8 sigma, 0 pi 
C)  6 sigma, 2 pi 
D)  10 sigma, 0 pi 
E)  8 sigma, 2 pi

Question 20

How many of the following molecules have sp3d2 hybridization on the central atom? SeBr6 XeCl4 IF5 AsF5

Accepted Answer

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

Exam 10: Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Consider the molecule below.Determine the molecular geometry at each of the 2 labeled carbons.

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined atom H2CO.

Consider the molecule below.Determine the hybridization at each of the 2 labeled carbons.

Determine the electron geometry (eg),molecular geometry (mg),and polarity of N2O (N central).

Explain why oil and water do not mix.

Draw the molecular orbital diagram shown to determine which of the following is paramagnetic.

Using the VSEPR model,the electron-domain geometry of the central atom in NH4+ is

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined carbon in CH3F.

Give the molecular geometry and number of electron groups for BrF5.

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

Give the hybridization for the C in HCCH.

Identify the hybridization for the carbons in benzene,C6H6.

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

Place the following in order of increasing dipole moment. I.BCl3 II.BIF2 III.BClF2

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined atom CH3OH.

Which of the following statements is TRUE?

Determine the electron geometry (eg),molecular geometry (mg),and polarity of PCl3.

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

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

How many of the following molecules have sp3d2 hybridization on the central atom? SeBr6 XeCl4 IF5 AsF5

Matter, measurement, and Problem Solving

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Chemical Quantities and Aqueous Reactions

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The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

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Chemical Kinetics

Chemical Equilibrium

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Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

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Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined atom H₂CO.

Determine the electron geometry (eg),molecular geometry (mg),and polarity of N₂O (N central).

Using the VSEPR model,the electron-domain geometry of the central atom in NH₄⁺ is

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined carbon in CH₃F.

Give the molecular geometry and number of electron groups for BrF₅.

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

Identify the hybridization for the carbons in benzene,C₆H₆.

Place the following in order of increasing dipole moment. I.BCl₃ II.BIF₂ III.BClF₂

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined atom CH₃OH.

Determine the electron geometry (eg),molecular geometry (mg),and polarity of PCl₃.

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

How many of the following molecules have sp³d² hybridization on the central atom? SeBr₆ XeCl₄ IF₅ AsF₅