Question 1

A molecule with the formula AX4 uses _________ to form its bonds.

Accepted Answer

A)   sp hybrid orbitals
B)   sp2 hybrid orbitals
C)   sp3 hybrid orbitals
D)   sp3d hybrid orbitals
E)   sp3d2 hybrid orbitalsF) A) and E)
G) A) and C)

Question 2

According to molecular orbital (MO)  theory, the twelve outermost electrons in the O2 molecule are distributed as follows:

Accepted Answer

A)   12 in bonding MOs, 0 in antibonding MOs.
B)   10 in bonding MOs, 2 in antibonding MOs.
C)   9 in bonding MOs, 3 in antibonding MOs.
D)   8 in bonding MOs, 4 in antibonding MOs.
E)   7 in bonding MOs, 5 in antibonding MOs.F) All of the above
G) B) and D)

Question 3

Valence bond theory predicts that sulfur will use _____ hybrid orbitals in sulfur dioxide, SO2.

Accepted Answer

A)   sp
B)   sp2
C)   sp3
D)   sp3d
E)   sp3d2F) C) and D)
G) B) and D)

Question 4

Valence bond theory predicts that bromine will use _____ hybrid orbitals in BrF5.

Accepted Answer

A)   sp2
B)   sp3
C)   sp3d
D)   sp3d 2
E)   none of the aboveF) A) and D)
G) A) and C)

Question 5

Valence bond theory predicts that iodine will use _____ hybrid orbitals in ICl2-.

Accepted Answer

A)   sp2
B)   sp3
C)   sp3d
D)   sp3d 2
E)   none of the aboveF) A) and C)
G) B) and D)

Question 6

According to the molecular orbital (MO)  treatment of the NO molecule, what are the bond order and the number of unpaired electrons, respectively?

Accepted Answer

A)   2, 2
B)   3, 3
C)   1, 1
D)   1.5, 2
E)   2.5, 1F) A) and B)
G) B) and C)

Question 7

In one sentence state the basic principle of valence bond theory.

Accepted Answer

A covalent bond forms when the...

Question 8

According to valence bond theory, the triple bond in ethyne (acetylene, C2H2)  consists of

Accepted Answer

A)   three  bonds and no  bonds.
B)   two  bonds and one  bond.
C)   one  bond and two  bonds.
D)   no  bonds and three  bonds.
E)   none of the above.F) None of the above
G) A) and B)

Question 9

According to valence bond theory, which of the following molecules involves sp2 hybridization of orbitals on the central atom? (central atom is bold)

Accepted Answer

A)   C2H2
B)   C2H4
C)   C2H6
D)   CO2
E)   H2OF) B) and D)
G) A) and C)

Question 10

In molecular orbital theory, combination of two atomic orbitals produces two molecular orbitals.

Accepted Answer

A) True 
 B)False

Question 11

How many sigma and pi bonds, respectively, are in the molecule below? CH3CH2CHCHCH3?

Accepted Answer

A)   16, 1
B)   16, 0
C)   15, 1
D)   15, 0
E)   14, 1F) C) and E)
G) A) and B)

Question 12

Which one of the following statements about orbital hybridization is incorrect?

Accepted Answer

A)   The carbon atom in CH4 is sp3 hybridized.
B)   The carbon atom in CO2 is sp hybridized.
C)   The nitrogen atom in NH3 is sp2 hybridized.
D)   sp2 hybrid orbitals are coplanar, and at 120° to each other.
E)   sp hybrid orbitals lie at 180° to each other.F) A) and C)
G) B) and C)

Question 13

Determine the shape (geometry)  of PCl3 and then decide on the appropriate hybridization of phosphorus in this molecule. (Phosphorus is the central atom.)

Accepted Answer

A)   sp3
B)   sp2
C)   sp
D)   sp3d
E)   sp3d 2F) A) and C)
G) B) and D)

Question 14

Overlap of two sp2 hybrid orbitals produces a F1F1F1S1F1F1F10 bond.

Accepted Answer

A) True 
 B)False

Question 15

A carbon-carbon triple bond in a molecule may give rise to the existence of cis and trans isomers.

Accepted Answer

A) True 
 B)False

Question 16

A molecule with the formula AX3 uses __________ to form its bonds.

Accepted Answer

A)   sp hybrid orbitals
B)   sp2 hybrid orbitals
C)   sp3 hybrid orbitals
D)   sp3d hybrid orbitals
E)   sp3d2 hybrid orbitalsF) C) and D)
G) A) and E)

Question 17

Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion, CO32-.

Accepted Answer

A)   sp
B)   sp2
C)   sp3
D)   sp3d
E)   sp3d2F) D) and E)
G) B) and E)

Question 18

Valence bond theory explains the bonding in diatomic molecules such as HCl without resorting to the use of hybrid orbitals.

Accepted Answer

A) True 
 B)False

Exam 11: Theories of Covalent Bonding

According to valence bond theory, which of the following molecules involves sp² hybridization of orbitals on the central atom? (central atom is bold)

Correct Answer
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Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion, CO₃^2-.

Correct Answer
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A molecule with the formula AX₃ uses __________ to form its bonds.

Correct Answer
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Determine the shape (geometry) of PCl₃ and then decide on the appropriate hybridization of phosphorus in this molecule. (Phosphorus is the central atom.)

Correct Answer
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A molecule with the formula AX₄uses _________ to form its bonds.

Correct Answer
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Overlap of two sp² hybrid orbitals produces a  bond.

Correct Answer
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Valence bond theory explains the bonding in diatomic molecules such as HCl without resorting to the use of hybrid orbitals.

Correct Answer
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According to the molecular orbital (MO) treatment of the NO molecule, what are the bond order and the number of unpaired electrons, respectively?

Correct Answer
verified

According to valence bond theory, the triple bond in ethyne (acetylene, C₂H₂) consists of

Correct Answer
verified

Valence bond theory predicts that iodine will use _____ hybrid orbitals in ICl₂^-.

Correct Answer
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How many sigma and pi bonds, respectively, are in the molecule below? CH₃CH₂CHCHCH₃?

Correct Answer
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In one sentence state the basic principle of valence bond theory.

Correct Answer
verified
A covalent bond forms when the...
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Valence bond theory predicts that sulfur will use _____ hybrid orbitals in sulfur dioxide, SO₂.

Correct Answer
verified

According to molecular orbital (MO) theory, the twelve outermost electrons in the O₂ molecule are distributed as follows:

Correct Answer
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A carbon-carbon triple bond in a molecule may give rise to the existence of cis and trans isomers.

Correct Answer
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Which one of the following statements about orbital hybridization is incorrect?

Correct Answer
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Valence bond theory predicts that bromine will use _____ hybrid orbitals in BrF₅.

Correct Answer
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In molecular orbital theory, combination of two atomic orbitals produces two molecular orbitals.

Correct Answer
verified

Exam 11: Theories of Covalent Bonding

According to valence bond theory, which of the following molecules involves sp2 hybridization of orbitals on the central atom? (central atom is bold)

Correct AnswerverifiedShow Answer

Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion, CO32-.

Correct AnswerverifiedShow Answer

A molecule with the formula AX3 uses __________ to form its bonds.

Correct AnswerverifiedShow Answer

Determine the shape (geometry) of PCl3 and then decide on the appropriate hybridization of phosphorus in this molecule. (Phosphorus is the central atom.)

Correct AnswerverifiedShow Answer

A molecule with the formula AX4 uses _________ to form its bonds.

Correct AnswerverifiedShow Answer

Overlap of two sp2 hybrid orbitals produces a  bond.

Correct AnswerverifiedShow Answer

Valence bond theory explains the bonding in diatomic molecules such as HCl without resorting to the use of hybrid orbitals.

Correct AnswerverifiedShow Answer

According to the molecular orbital (MO) treatment of the NO molecule, what are the bond order and the number of unpaired electrons, respectively?

Correct AnswerverifiedShow Answer

According to valence bond theory, the triple bond in ethyne (acetylene, C2H2) consists of

Correct AnswerverifiedShow Answer

Valence bond theory predicts that iodine will use _____ hybrid orbitals in ICl2-.

Correct AnswerverifiedShow Answer

How many sigma and pi bonds, respectively, are in the molecule below? CH3CH2CHCHCH3?

Correct AnswerverifiedShow Answer

In one sentence state the basic principle of valence bond theory.

Correct AnswerverifiedA covalent bond forms when the...View AnswerShow Answer

Valence bond theory predicts that sulfur will use _____ hybrid orbitals in sulfur dioxide, SO2.

Correct AnswerverifiedShow Answer

According to molecular orbital (MO) theory, the twelve outermost electrons in the O2 molecule are distributed as follows:

Correct AnswerverifiedShow Answer

A carbon-carbon triple bond in a molecule may give rise to the existence of cis and trans isomers.

Correct AnswerverifiedShow Answer

Which one of the following statements about orbital hybridization is incorrect?

Correct AnswerverifiedShow Answer

Valence bond theory predicts that bromine will use _____ hybrid orbitals in BrF5.

Correct AnswerverifiedShow Answer

In molecular orbital theory, combination of two atomic orbitals produces two molecular orbitals.

Correct AnswerverifiedShow Answer

According to valence bond theory, which of the following molecules involves sp² hybridization of orbitals on the central atom? (central atom is bold)

Correct Answer
verified

Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion, CO₃^2-.

Correct Answer
verified

A molecule with the formula AX₃ uses __________ to form its bonds.

Correct Answer
verified

Determine the shape (geometry) of PCl₃ and then decide on the appropriate hybridization of phosphorus in this molecule. (Phosphorus is the central atom.)

Correct Answer
verified

A molecule with the formula AX₄uses _________ to form its bonds.

Correct Answer
verified

Overlap of two sp² hybrid orbitals produces a  bond.

Correct Answer
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Correct Answer
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Correct Answer
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According to valence bond theory, the triple bond in ethyne (acetylene, C₂H₂) consists of

Correct Answer
verified

Valence bond theory predicts that iodine will use _____ hybrid orbitals in ICl₂^-.

Correct Answer
verified

How many sigma and pi bonds, respectively, are in the molecule below? CH₃CH₂CHCHCH₃?

Correct Answer
verified

Correct Answer
verified
A covalent bond forms when the...
View Answer

Valence bond theory predicts that sulfur will use _____ hybrid orbitals in sulfur dioxide, SO₂.

Correct Answer
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According to molecular orbital (MO) theory, the twelve outermost electrons in the O₂ molecule are distributed as follows:

Correct Answer
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Correct Answer
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Correct Answer
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Valence bond theory predicts that bromine will use _____ hybrid orbitals in BrF₅.

Correct Answer
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Correct Answer
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