Question 1

How many of the following molecules are polar? 
XeCl2 COF2 PCl4F SF6

Accepted Answer

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

Question 2

What is the molecular geometry of SF5-?

Accepted Answer

A)  octahedral 
B)  seesaw 
C)  square pyramidal 
D)  trigonal bipyramidal 
A)  octahedral 
B)  seesaw 
C)  square pyramidal 
D)  trigonal bipyramidal

Question 3

Determine the electron geometry for the molecule SBr2.

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 4

Match the following.
-CH2F2

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 5

Match the following.
-BeF2

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 6

Which of the following statements is FALSE?

Accepted Answer

A)  VSEPR theory is based on the simple idea that electron groups repel each other. 
B)  The preferred geometry of a molecule is the one in which the electron groups have minimum separation. 
C)  CO2 has linear electron and molecular geometry. 
D)  BF3 has trigonal planar electron and molecular geometry. 
A)  VSEPR theory is based on the simple idea that electron groups repel each other. 
B)  The preferred geometry of a molecule is the one in which the electron groups have minimum separation. 
C)  CO2 has linear electron and molecular geometry. 
D)  BF3 has trigonal planar electron and molecular geometry.

Question 7

Draw a molecular orbital diagram and use it to determine which of the following is most stable.

Accepted Answer

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

Question 8

Determine the molecular geometry (mg) of the bolded and underlined atom CH3CH2NH2.

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 9

Use 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 10

Using the VSEPR model, the electron-domain geometry of the central atom in SCl4 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 11

Determine the electron geometry (eg), molecular geometry (mg), and polarity of SF6.

Accepted Answer

A)  eg = trigonal bipyramidal, mg = trigonal bipyramidal, nonpolar 
B)  eg = tetrahedral, mg = tetrahedral, polar 
C)  eg = trigonal bipyramidal, mg = seesaw, polar 
D)  eg = octahedral, mg = trigonal bipyramidal, nonpolar 
E)  eg = octahedral, mg = octahedral, nonpolar 
A)  eg = trigonal bipyramidal, mg = trigonal bipyramidal, nonpolar 
B)  eg = tetrahedral, mg = tetrahedral, polar 
C)  eg = trigonal bipyramidal, mg = seesaw, polar 
D)  eg = octahedral, mg = trigonal bipyramidal, nonpolar 
E)  eg = octahedral, mg = octahedral, nonpolar

Question 12

Draw the Lewis structure for CCl4. What is the hybridization on the C atom?

Accepted Answer

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

Question 13

How many of the following molecules have sp3 hybridization on the central atom? XeCl4 CH4 SF4 C2H2

Accepted Answer

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

Question 14

Determine the electron geometry (eg) and molecular geometry (mg) of BrF5.

Accepted Answer

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

Question 15

Determine the electron geometry (eg) and molecular geometry (mg) of NCl3.

Accepted Answer

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

Question 16

Place the following in order of decreasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule. N2O NCl3 NO2⁻

Accepted Answer

A)  NCl3 > NO2⁻ > N2O 
B)  NO2⁻ > N2O > NCl3 
C)  N2O > NO2⁻ > NCl3 
D)  NCl3 > N2O > NO2⁻ 
E)  N2O > NCl3 > NO2⁻ 
A)  NCl3 > NO2⁻ > N2O 
B)  NO2⁻ > N2O > NCl3 
C)  N2O > NO2⁻ > NCl3 
D)  NCl3 > N2O > NO2⁻ 
E)  N2O > NCl3 > NO2⁻

Question 17

Determine the hybridization about each interior atom in the following structure. Sketch the three-dimensional structure and label the interior atoms with their corresponding hybridization.
CH2CHCCCH3

Accepted Answer

The sketch should show all of the approp

Question 18

Give the approximate bond angle for a molecule with octahedral electron geometry and square pyramidal molecular geometry.

Accepted Answer

A)  90° 
B)  180° 
C)  >120° 
D)  90° 
A)  90° 
B)  180° 
C)  >120° 
D)  90°

Question 19

Determine the electron geometry (eg) and molecular geometry (mg) of BrF3.

Accepted Answer

A)  eg = trigonal planar, mg = trigonal planar 
B)  eg = trigonal bipyramidal, mg = T-shape 
C)  eg = trigonal planar, mg = bent 
D)  eg = trigonal bipyramidal, mg = seesaw 
E)  eg = tetrahedral, mg = trigonal pyramidal 
A)  eg = trigonal planar, mg = trigonal planar 
B)  eg = trigonal bipyramidal, mg = T-shape 
C)  eg = trigonal planar, mg = bent 
D)  eg = trigonal bipyramidal, mg = seesaw 
E)  eg = tetrahedral, mg = trigonal pyramidal

Question 20

Determine the electron geometry (eg) and molecular geometry (mg) of CO2.

Accepted Answer

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

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

How many of the following molecules are polar? XeCl2 COF2 PCl4F SF6

What is the molecular geometry of SF5-?

Determine the electron geometry for the molecule SBr2.

Match the following. -CH2F2

Match the following. -BeF2

Which of the following statements is FALSE?

Draw a molecular orbital diagram and use it to determine which of the following is most stable.

Determine the molecular geometry (mg) of the bolded and underlined atom CH3CH2NH2.

Use 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 SCl4 is ________.

Determine the electron geometry (eg), molecular geometry (mg), and polarity of SF6.

Draw the Lewis structure for CCl4. What is the hybridization on the C atom?

How many of the following molecules have sp3 hybridization on the central atom? XeCl4 CH4 SF4 C2H2

Determine the electron geometry (eg) and molecular geometry (mg) of BrF5.

Determine the electron geometry (eg) and molecular geometry (mg) of NCl3.

Place the following in order of decreasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule. N2O NCl3 NO2⁻

Determine the hybridization about each interior atom in the following structure. Sketch the three-dimensional structure and label the interior atoms with their corresponding hybridization. CH2CHCCCH3

Give the approximate bond angle for a molecule with octahedral electron geometry and square pyramidal molecular geometry.

Determine the electron geometry (eg) and molecular geometry (mg) of BrF3.

Determine the electron geometry (eg) and molecular geometry (mg) of CO2.

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

How many of the following molecules are polar? XeCl₂ COF₂ PCl₄F SF₆

What is the molecular geometry of SF₅^-?

Determine the electron geometry for the molecule SBr₂.

Match the following. -CH₂F₂

Match the following. -BeF₂

Determine the molecular geometry (mg) of the bolded and underlined atom CH₃CH₂NH₂.

Using the VSEPR model, the electron-domain geometry of the central atom in SCl₄ is ________.

Determine the electron geometry (eg), molecular geometry (mg), and polarity of SF₆.

Draw the Lewis structure for CCl₄. What is the hybridization on the C atom?

How many of the following molecules have sp³ hybridization on the central atom? XeCl₄ CH₄ SF₄ C₂H₂

Determine the electron geometry (eg) and molecular geometry (mg) of BrF₅.

Determine the electron geometry (eg) and molecular geometry (mg) of NCl₃.

Place the following in order of decreasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule. N₂O NCl₃ NO₂⁻

Determine the hybridization about each interior atom in the following structure. Sketch the three-dimensional structure and label the interior atoms with their corresponding hybridization. CH₂CHCCCH₃

Determine the electron geometry (eg) and molecular geometry (mg) of BrF₃.

Determine the electron geometry (eg) and molecular geometry (mg) of CO₂.