Question 1

The F -Cl -F bond angles in ClF3 are expected to be approximately

Accepted Answer

A)  90° only.
B)  109.5° only.
C)  120° only.
D)  180° only.
E)  90° and 180°.F) A) and D)
G) A) and B)

Question 2

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) C) and D)
G) None of the above

Question 3

Which of the following is not true of molecular orbitals?

Accepted Answer

A)  The number of molecular orbitals formed is always equal to the number of atomic orbitals combined.
B)  A molecular orbital can accommodate up to two electrons.
C)  When electrons are added to orbitals of the same energy, the most stable arrangement is predicted by Hund's rule.
D)  Low-energy molecular orbitals fill before high-energy molecular orbitals fill.
E)  For any substance, the number of electrons in molecular orbitals is equal to the sum of all the valence electrons on the bonding atoms.F) B) and D)
G) B) and C)

Question 4

Give the number of lone pairs around the central atom and the geometry of the ion ClO3-.

Accepted Answer

A)  0 lone pairs, trigonal
B)  1 lone pair, bent
C)  1 lone pair, trigonal pyramidal
D)  2 lone pairs, T-shaped
E)  2 lone pairs, trigonalF) B) and D)
G) B) and E)

Question 5

The bond angles in SCl2 are expected to be

Accepted Answer

A)  a little less than 109.5°.
B)  109.5°.
C)  a little more than 109.5°.
D)  120°.
E)  180°.F) A) and E)
G) B) and C)

Question 6

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

Accepted Answer

A)  C2 2 2 2
B)  Be2 2 2 2
C)  N2 2 2 2
D)  N2 2 2 2
E)  Be2 2 2 2F) D) and E)
G) None of the above

Question 7

What is the bond order of CO+

Accepted Answer

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

Question 8

Use VSEPR theory to predict the molecular geometry of SF4 (sulfur tetrafluoride).

Accepted Answer

distorted ...

Question 9

Which one of the following molecules has a non-zero dipole moment?

Accepted Answer

A)  BeCl2
B)  Br2
C)  BF3
D)  IBr
E)  CO2F) A) and D)
G) B) and D)

Question 10

What bond angles are predicted by VSEPR theory for the F -P -F bonds in PF5?

Accepted Answer

Question 11

The geometry of the ClF3 molecule is best described as:

Accepted Answer

A)  distorted tetrahedron
B)  trigonal planar
C)  tetrahedral
D)  T-shaped
E)  trigonal pyramidalF) C) and E)
G) A) and E)

Question 12

Which of the following molecules has polar bonds but is a nonpolar molecule?

Accepted Answer

A)  PCl3
B)  NCl3
C)  BF3
D)  HF
E)  OCl2F) A) and C)
G) C) and D)

Question 13

Indicate the type of hybrid orbitals used by the central atom in SF6.

Accepted Answer

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

Question 14

Valence Bond Theory alone can be used to determine that O2 is paramagnetic.

Accepted Answer

A) True 
 B)False

Question 15

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 E)
G) C) and D)

Question 16

More energy is required to break a bond with an order of 3/2 than is required to break a bond of order 2.

Accepted Answer

A) True 
 B)False

Question 17

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) None of the above
G) B) and E)

Question 18

Use VSEPR theory to predict the molecular geometry of CO32-.

Accepted Answer

Question 19

The bond angles in ICl2- are expected to be

Accepted Answer

A)  a little less than 109.5°.
B)  109.5°.
C)  a little more than 109.5°.
D)  120°.
E)  180°.F) None of the above
G) B) and E)

Question 20

Indicate the number of $\pi$-bonds in C2H6.

Accepted Answer

Exam 10: Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Which of the following is not true of molecular orbitals?

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The F -Cl -F bond angles in ClF3 are expected to be approximately

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The geometry of the ClF3 molecule is best described as:

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What is the bond order of CO+

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The bond angles in SCl2 are expected to be

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Indicate the type of hybrid orbitals used by the central atom in SF6.

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What bond angles are predicted by VSEPR theory for the F -P -F bonds in PF5?

Correct AnswerverifiedShow Answer

Valence Bond Theory alone can be used to determine that O2 is paramagnetic.

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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?

Correct AnswerverifiedShow Answer

Give the number of lone pairs around the central atom and the geometry of the ion ClO3-.

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More energy is required to break a bond with an order of 3/2 than is required to break a bond of order 2.

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Indicate the number of π\piπ -bonds in C2H6.

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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?

Correct AnswerverifiedShow Answer

Which of the following molecules has polar bonds but is a nonpolar molecule?

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

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The bond angles in ICl2- are expected to be

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Use VSEPR theory to predict the molecular geometry of SF4 (sulfur tetrafluoride).

Correct Answerverifieddistorted ...View AnswerShow Answer

Which one of the following molecules has a non-zero dipole moment?

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

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Use VSEPR theory to predict the molecular geometry of CO32-.

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The F -Cl -F bond angles in ClF₃ are expected to be approximately

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The geometry of the ClF₃ molecule is best described as:

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What is the bond order of CO⁺

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The bond angles in SCl₂ are expected to be

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Indicate the type of hybrid orbitals used by the central atom in SF₆.

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What bond angles are predicted by VSEPR theory for the F -P -F bonds in PF₅?

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Valence Bond Theory alone can be used to determine that O₂ is paramagnetic.

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Give the number of lone pairs around the central atom and the geometry of the ion ClO₃^-.

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Indicate the number of $\pi$ -bonds in C₂H₆.

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The bond angles in ICl₂^- are expected to be

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Use VSEPR theory to predict the molecular geometry of SF₄ (sulfur tetrafluoride).

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distorted ...
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Use VSEPR theory to predict the molecular geometry of CO₃^2-.

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