Question 1

How many of the following molecules are polar? XeO2 SiCl2Br2 C2Br2 SeCl6

Accepted Answer

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

Question 2

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

Question 3

How many electrons are present in the antibonding MO orbital of He2?

Accepted Answer

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

Question 4

Draw the Lewis structure for the molecule CH2CHCH3.How many sigma and pi bonds does it contain?

Accepted Answer

A)  8 sigma,1 pi
B)  9 sigma,0 pi
C)  9 sigma,1 pi
D)  7 sigma,2 pi
E)  8 sigma,2 pi

Question 5

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

Accepted Answer

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

Question 6

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

Accepted Answer

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

Question 7

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

Question 8

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

Question 9

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

Question 10

What is the molecular geometry of TeCl4?

Accepted Answer

A)  seesaw
B)  square planar
C)  square pyramidal
D)  tetrahedral

Question 11

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

Question 12

Which molecule has unpaired electrons?

Accepted Answer

A)  N2
B)  O2
C)  F2
D)  H2

Question 13

Using the VSEPR model,the molecular geometry of the central atom in SO2 is ________.

Accepted Answer

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

Question 14

Is it possible for a molecule to be nonpolar even though it contains polar bonds? Explain your answer and give an example.

Accepted Answer

Yes.The polarity of a molecule depends o...

Question 15

The hybrid orbital set used by the central atom in NO3- is ________.

Accepted Answer

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

Question 16

Determine the electron geometry (eg) and molecular geometry (mg) of ICl2⁻.

Accepted Answer

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

Question 17

Draw the Lewis structure for SO3.What is the hybridization on the S atom?

Accepted Answer

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

Question 18

Describe a square planar shape.

Accepted Answer

Four bondi...

Question 19

Give the approximate bond angle for a molecule with a trigonal planar shape.

Accepted Answer

A)  109.5°
B)  180°
C)  120°
D)  105°

Question 20

Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of SO2.

Accepted Answer

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

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

Is it possible for a molecule to be nonpolar even though it contains polar bonds? Explain your answer and give an example.

Correct AnswerverifiedYes.The polarity of a molecule depends o...View AnswerShow Answer

Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of SO2.

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Describe a square planar shape.

Correct AnswerverifiedFour bondi...View AnswerShow Answer

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

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

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

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The hybrid orbital set used by the central atom in NO3- is ________.

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

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

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Determine the electron geometry (eg) and molecular geometry (mg) of ICl2⁻.

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What is the molecular geometry of TeCl4?

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Draw the Lewis structure for SO3.What is the hybridization on the S atom?

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

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Give the approximate bond angle for a molecule with a trigonal planar shape.

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Using the VSEPR model,the molecular geometry of the central atom in SO2 is ________.

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Which molecule has unpaired electrons?

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Draw the Lewis structure for the molecule CH2CHCH3.How many sigma and pi bonds does it contain?

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How many electrons are present in the antibonding MO orbital of He2?

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How many of the following molecules are polar? XeO2 SiCl2Br2 C2Br2 SeCl6

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

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Yes.The polarity of a molecule depends o...
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Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of SO₂.

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

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The hybrid orbital set used by the central atom in NO₃^- is ________.

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

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

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Determine the electron geometry (eg) and molecular geometry (mg) of ICl₂^⁻.

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What is the molecular geometry of TeCl₄?

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Draw the Lewis structure for SO₃.What is the hybridization on the S atom?

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

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Using the VSEPR model,the molecular geometry of the central atom in SO₂ is ________.

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Draw the Lewis structure for the molecule CH₂CHCH₃.How many sigma and pi bonds does it contain?

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How many electrons are present in the antibonding MO orbital of He₂?

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How many of the following molecules are polar? XeO₂ SiCl₂Br₂ C₂Br₂ SeCl₆

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