Question 1

A sp hybridized terminal oxygen atom (bonded to one other atom only)  with 1 lone pair of electrons has what type of bonding

Accepted Answer

A)   1  π\piπ  and 2  σ\sigmaσ  bonds
B)   2  π\piπ  and 1  σ\sigmaσ  bonds
C)   2  π\piπ  and 2  σ\sigmaσ  bonds
D)   0  π\piπ  and 2  σ\sigmaσ  bonds
E)   0  π\piπ  and 3  σ\sigmaσ  bonds F) A) and C)
G) All of the above

Question 2

The N - N - H bond angles in hydrazine N2H4 are 112 ∘\circ∘ . What is the hybridization of the nitrogen orbitals predicted by valence bond theory

Accepted Answer

A)   sp
B)   sp2
C)   sp3
D)   sp4
E)  None of the above F) All of the above
G) A) and E)

Question 3

N,N-diethyl-m-tolumide (DEET)  is the active ingredient in many mosquito repellents. What is the hybridization state of carbon indicated by the arrow in the structure of DEET shown below 2 C)  sp3 D)  sp3d E)  sp3d2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 4

Ibuprofen is used as an analgesic for the relief of pain, and also to help reduce fever. What is the hybridization state of carbon indicated by the arrow in the structure of ibuprofen shown below 2 C)  sp3 D)  sp3d E)  sp3d2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 5

The F - S - F bond angles in SF6 are

Accepted Answer

A)   90 ∘\circ∘  and 180 ∘\circ∘ .
B)   109.5 ∘\circ∘ .
C)   120 ∘\circ∘ .
D)   180 ∘\circ∘ .
E)   90 ∘\circ∘ and 120 ∘\circ∘ . F) None of the above
G) A) and B)

Question 6

A bonding molecular orbital is of lower energy (more stable) than the atomic orbitals from which it was formed.

Accepted Answer

A) True 
 B)False

Question 7

Which one of the following molecules is nonpolar

Accepted Answer

A)   NH3
B)   OF2
C)   CH3Cl
D)   H2O
E)   BeCl2F) B) and E)
G) A) and E)

Question 8

What is the bond order of Cl2-

Accepted Answer

A)   0
B)   0.5
C)   1
D)   1.5
E)   2F) C) and E)
G) A) and C)

Question 9

In which of the following would the bonding be weakened with the addition of an electron to form the negative molecular ion

Accepted Answer

A)   B2
B)   C2
C)   N2
D)   all of these
E)   none of theseF) All of the above
G) B) and E)

Question 10

The BrF5 molecule has polar bonds and has a net dipole moment.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following correctly lists species in order of increasing bond length

Accepted Answer

A)   O2 2+ 2-
B)   O2- 2 2+
C)   O2+ 2 2-
D)   O2- 2+ 2
E)   O2+ 2- 2F) C) and E)
G) A) and B)

Question 12

Which one of the following molecules is polar

Accepted Answer

A)   PBr5
B)   CCl4
C)   BrF5
D)   XeF2
E)   XeF4F) A) and D)
G) C) and D)

Question 13

The bond in B2 is longer than the bond in B2-.

Accepted Answer

A) True 
 B)False

Question 14

Ozone (O3) is an allotropic form of oxygen. According to VSEPR theory the shape of the ozone molecule is bent.

Accepted Answer

A) True 
 B)False

Question 15

Pi bonds are covalent bonds in which the electron density is concentrated above and below a plane containing the nuclei of the bonding atoms.

Accepted Answer

A) True 
 B)False

Question 16

Which one of the following molecules has tetrahedral geometry

Accepted Answer

A)   XeF4
B)   BF3
C)   AsF5
D)   CF4
E)   NH3F) A) and D)
G) C) and D)

Question 17

A molecule with 3 single bonds (and any number of lone pairs)  could have which of the following molecular geometries
I. Trigonal planar
II. Trigonal pyramidal
III. Seesaw
IV. T-shaped

Accepted Answer

A)   I and II
B)   II and III
C)   II and IV
D)   I and III
E)   I, II, and IVF) A) and C)
G) D) and E)

Question 18

Ibuprofen is used as an analgesic for the relief of pain, and also to help reduce fever.  How many sigma bonds and pi bonds are contained in an ibuprofen molecule
33 sigma bonds and 4 pi bonds

Accepted Answer

A) True 
 B)False

Question 19

An sp3 hybridized central carbon atom with no lone pairs of electrons has what type of bonding

Accepted Answer

A)  1  π\piπ  and 2  σ\sigmaσ bonds
B)  1  π\piπ  and 3  σ\sigmaσ  bonds
C)  2  π\piπ  and 2  σ\sigmaσ  bonds
D)  3  π\piπ  and 2  σ\sigmaσ  bonds
E)  0  π\piπ  and 4  σ\sigmaσ  bonds F) B) and E)
G) D) and E)

Question 20

N,N-diethyl-m-tolumide (DEET) is the active ingredient in many mosquito repellents.  There are 30 sigma bonds and 4 pi bonds are contained in a DEET molecule.

Accepted Answer

A) True 
 B)False

Exam 10: Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

The bond in B2 is longer than the bond in B2-.

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N,N-diethyl-m-tolumide (DEET) is the active ingredient in many mosquito repellents. What is the hybridization state of carbon indicated by the arrow in the structure of DEET shown below

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Pi bonds are covalent bonds in which the electron density is concentrated above and below a plane containing the nuclei of the bonding atoms.

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Which one of the following molecules is polar

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Which one of the following molecules is nonpolar

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In which of the following would the bonding be weakened with the addition of an electron to form the negative molecular ion

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What is the bond order of Cl2-

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Ibuprofen is used as an analgesic for the relief of pain, and also to help reduce fever. What is the hybridization state of carbon indicated by the arrow in the structure of ibuprofen shown below

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Which one of the following molecules has tetrahedral geometry

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An sp3 hybridized central carbon atom with no lone pairs of electrons has what type of bonding

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Ibuprofen is used as an analgesic for the relief of pain, and also to help reduce fever. How many sigma bonds and pi bonds are contained in an ibuprofen molecule 33 sigma bonds and 4 pi bonds

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The F - S - F bond angles in SF6 are

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A molecule with 3 single bonds (and any number of lone pairs) could have which of the following molecular geometries I. Trigonal planar II. Trigonal pyramidal III. Seesaw IV. T-shaped

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A bonding molecular orbital is of lower energy (more stable) than the atomic orbitals from which it was formed.

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The N - N - H bond angles in hydrazine N2H4 are 112 ∘\circ∘ . What is the hybridization of the nitrogen orbitals predicted by valence bond theory

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A sp hybridized terminal oxygen atom (bonded to one other atom only) with 1 lone pair of electrons has what type of bonding

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The BrF5 molecule has polar bonds and has a net dipole moment.

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Which of the following correctly lists species in order of increasing bond length

Correct AnswerverifiedShow Answer

N,N-diethyl-m-tolumide (DEET) is the active ingredient in many mosquito repellents. There are 30 sigma bonds and 4 pi bonds are contained in a DEET molecule.

Correct AnswerverifiedShow Answer

Ozone (O3) is an allotropic form of oxygen. According to VSEPR theory the shape of the ozone molecule is bent.

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The bond in B₂ is longer than the bond in B₂^-.

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What is the bond order of Cl₂^-

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An sp³ hybridized central carbon atom with no lone pairs of electrons has what type of bonding

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The F - S - F bond angles in SF₆ are

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The N - N - H bond angles in hydrazine N₂H₄ are 112^$\circ$. What is the hybridization of the nitrogen orbitals predicted by valence bond theory

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The BrF₅ molecule has polar bonds and has a net dipole moment.

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Ozone (O₃) is an allotropic form of oxygen. According to VSEPR theory the shape of the ozone molecule is bent.

Correct Answer
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