Question 1

Draw the Lewis structure for the molecule CH3CH2CCH. How many sigma and pi bonds does it contain?

Accepted Answer

A)  11 sigma, 0 pi 
B)  9 sigma, 1 pi 
C)  8 sigma, 3 pi 
D)  9 sigma, 2 pi 
E)  8 sigma, 2 pi 
A)  11 sigma, 0 pi 
B)  9 sigma, 1 pi 
C)  8 sigma, 3 pi 
D)  9 sigma, 2 pi 
E)  8 sigma, 2 pi

Question 2

How many of the following molecules have sp3d2 hybridization on the central atom? SeCl6 XeF4 IF5 AsCl5

Accepted Answer

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

Question 3

Using the VSEPR model, the molecular geometry of the central atom in CCl4 is ________.

Accepted Answer

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

Question 4

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

Accepted Answer

A)  B22⁺ 
B)  B22⁻ 
C)  N22⁺ 
D)  C22⁻ 
E)  B2 
A)  B22⁺ 
B)  B22⁻ 
C)  N22⁺ 
D)  C22⁻ 
E)  B2

Question 5

Draw the Lewis structure for OF2. What is the hybridization on the O atom?

Accepted Answer

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

Question 6

Draw the Lewis structure for BF3. What is the hybridization on the B atom?

Accepted Answer

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

Question 7

Determine the electron geometry (eg) and molecular geometry (mg) of the bolded and underlined atom CH3OCH3.

Accepted Answer

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

Question 8

A molecule containing a central atom with six electron groups has a(n) ________ electron geometry.

Accepted Answer

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

Question 9

Match the following.
-sp

Accepted Answer

A) sp hybridized central atom 
B) octahedral electron geometry 
C) polar, but contains no polar bonds 
D) sp2 hybridized central atom 
E) linear
F)nonpolar, but contains a polar covalent bond
G)tetrahedral
H)trigonal planar
I)octahedral
J)polar
K)trigonal bipyramidal
L)seesaw molecular geometry 
A) sp hybridized central atom 
B) octahedral electron geometry 
C) polar, but contains no polar bonds 
D) sp2 hybridized central atom 
E) linear
F)nonpolar, but contains a polar covalent bond
G)tetrahedral
H)trigonal planar
I)octahedral
J)polar
K)trigonal bipyramidal
L)seesaw molecular geometry

Question 10

Determine the electron geometry for the molecule PCl5.

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 11

Using the VSEPR model, the molecular geometry of the central atom in Se O2 is ________.

Accepted Answer

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

Question 12

Determine the molecular geometry (mg) of the bolded and underlined atom CH3CH2OH.

Accepted Answer

A)  mg = tetrahedral 
B)  mg = trigonal pyramidal 
C)  mg = trigonal planar 
D)  mg = trigonal bipyramidal 
E)  mg = bent 
A)  mg = tetrahedral 
B)  mg = trigonal pyramidal 
C)  mg = trigonal planar 
D)  mg = trigonal bipyramidal 
E)  mg = bent

Question 13

How many of the following molecules have sp3d hybridization on the central atom? SiCl4 BrF5 AsF5 BrF3

Accepted Answer

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

Question 14

Determine the molecular geometry for the molecule PCl5.

Accepted Answer

A)  Linear 
B)  Seesaw 
C)  Square pyramidal 
D)  Trigonal bipyramidal 
E)  Square planar 
A)  Linear 
B)  Seesaw 
C)  Square pyramidal 
D)  Trigonal bipyramidal 
E)  Square planar

Question 15

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

Accepted Answer

A)  1 sigma, 1 pi 
B)  0 sigma, 2 pi 
C)  2 sigma, 0 pi 
D)  1 sigma, 2 pi 
A)  1 sigma, 1 pi 
B)  0 sigma, 2 pi 
C)  2 sigma, 0 pi 
D)  1 sigma, 2 pi

Question 16

Draw the Lewis structure for BrO4⁻. What is the hybridization on the Br atom?

Accepted Answer

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

Question 17

Determine the electron geometry (eg) and molecular geometry (mg) of XeF2.

Accepted Answer

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

Question 18

A molecule containing a central atom with sp3d hybridization has a(n) ________ electron geometry.

Accepted Answer

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

Question 19

How many of the following molecules are polar? 
BrCl3 CS2 SiF4 SO3

Accepted Answer

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

Question 20

Determine the electron geometry (eg) and molecular geometry (mg) of IBr4-.

Accepted Answer

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

Exam 10: Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Draw the Lewis structure for the molecule CH3CH2CCH. How many sigma and pi bonds does it contain?

How many of the following molecules have sp3d2 hybridization on the central atom? SeCl6 XeF4 IF5 AsCl5

Using the VSEPR model, the molecular geometry of the central atom in CCl4 is ________.

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

Draw the Lewis structure for OF2. What is the hybridization on the O atom?

Draw the Lewis structure for BF3. What is the hybridization on the B atom?

Determine the electron geometry (eg) and molecular geometry (mg) of the bolded and underlined atom CH3OCH3.

A molecule containing a central atom with six electron groups has a(n) ________ electron geometry.

Match the following. -sp

Determine the electron geometry for the molecule PCl5.

Using the VSEPR model, the molecular geometry of the central atom in Se O2 is ________.

Determine the molecular geometry (mg) of the bolded and underlined atom CH3CH2OH.

How many of the following molecules have sp3d hybridization on the central atom? SiCl4 BrF5 AsF5 BrF3

Determine the molecular geometry for the molecule PCl5.

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

Draw the Lewis structure for BrO4⁻. What is the hybridization on the Br atom?

Determine the electron geometry (eg) and molecular geometry (mg) of XeF2.

A molecule containing a central atom with sp3d hybridization has a(n) ________ electron geometry.

How many of the following molecules are polar? BrCl3 CS2 SiF4 SO3

Determine the electron geometry (eg) and molecular geometry (mg) of IBr4-.

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry Ii: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Draw the Lewis structure for the molecule CH₃CH₂CCH. How many sigma and pi bonds does it contain?

How many of the following molecules have sp³^d² hybridization on the central atom? SeCl₆ XeF₄ IF₅ AsCl₅

Using the VSEPR model, the molecular geometry of the central atom in CCl₄ is ________.

Draw the Lewis structure for OF₂. What is the hybridization on the O atom?

Draw the Lewis structure for BF₃. What is the hybridization on the B atom?

Determine the electron geometry (eg) and molecular geometry (mg) of the bolded and underlined atom CH₃OCH₃.

Determine the electron geometry for the molecule PCl₅.

Using the VSEPR model, the molecular geometry of the central atom in SeO₂is ________.

Determine the molecular geometry (mg) of the bolded and underlined atom CH₃CH₂OH.

How many of the following molecules have sp³^d hybridization on the central atom? SiCl₄ BrF₅ AsF₅ BrF₃

Determine the molecular geometry for the molecule PCl₅.

Draw the Lewis structure for BrO₄⁻. What is the hybridization on the Br atom?

Determine the electron geometry (eg) and molecular geometry (mg) of XeF₂.

A molecule containing a central atom with sp³^d hybridization has a(n) ________ electron geometry.

How many of the following molecules are polar? BrCl₃ CS₂ SiF₄ SO₃

Determine the electron geometry (eg) and molecular geometry (mg) of IBr₄^-.