Question 1

Which of the following molecules have the same geometries?

Accepted Answer

A)  SF4 and CH4
B)  CO2 and H2O
C)  CO2 and BeH2
D)  N2O and NO2E) None of the above
F) All of the above

Question 2

Predict the geometry around the central atom in XeO4.

Accepted Answer

A)  trigonal planar
B)  trigonal pyramidal
C)  tetrahedral
D)  trigonal bipyramidal
E)  octahedralF) B) and E)
G) B) and C)

Question 3

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) All of the above
G) A) and B)

Question 4

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 5

Give the number of lone pairs around the central atom and the geometry of the ion IBr2-.

Accepted Answer

A)  0 lone pairs, linear
B)  1 lone pair, bent
C)  2 lone pairs, bent
D)  3 lone pairs, bent
E)  3 lone pairs, linearF) D) and E)
G) All of the above

Question 6

Give the number of lone pairs around the central atom and the molecular geometry of SCl2.

Accepted Answer

A)  0 lone pairs, linear
B)  1 lone pair, bent
C)  2 lone pairs, bent
D)  3 lone pairs, bent
E)  3 lone pairs, linearF) A) and D)
G) C) and D)

Question 7

Explain why CO2 is nonpolar, but OCS is polar.

Accepted Answer

In CO₂ the two bond moments point in oppo...

Question 8

Indicate the type of hybrid orbitals used by the central atom in CCl4.

Accepted Answer

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

Question 9

According to VSEPR theory, the geometry of the PH3 molecule is best described as

Accepted Answer

A)  linear.
B)  trigonal planar.
C)  tetrahedral.
D)  bent.
E)  trigonal pyramidal.F) A) and B)
G) C) and D)

Question 10

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

Accepted Answer

Question 11

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

Accepted Answer

Question 12

Consider the species Cl2+, Cl2, and Cl2-. Which of these species will be paramagnetic?

Accepted Answer

A)  only Cl2
B)  Cl2+ and Cl2
C)  Cl2 and Cl2-
D)  Cl2+ and Cl2-
E)  all three are paramagneticF) C) and D)
G) A) and E)

Question 13

What is the hybridization of the iodine atom in the IF5 molecule?

Accepted Answer

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

Question 14

Give the number of lone pairs around the central atom and the molecular geometry of SeF4.

Accepted Answer

A)  0 lone pairs, tetrahedral
B)  1 lone pair, distorted tetrahedron (seesaw) 
C)  1 lone pair, square pyramidal
D)  1 lone pair, tetrahedral
E)  2 lone pairs, square planarF) None of the above
G) D) and E)

Question 15

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

Accepted Answer

Question 16

The number of pi bonds in the molecule below is

Accepted Answer

A)  1
B)  2
C)  3
D)  5
E)  9F) None of the above
G) D) and E)

Question 17

In which one of the following molecules is the central atom sp2 hybridized?

Accepted Answer

A)  SO2
B)  N2O
C)  BeCl2
D)  NF3
E)  PF5F) D) and E)
G) A) and E)

Question 18

The F - S - F bond angles in SF6 are

Accepted Answer

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

Question 19

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) A) and B)
G) D) and E)

Question 20

According to the VSEPR theory, which one of the following species should be linear?

Accepted Answer

A)  H2S
B)  HCN
C)  BF3
D)  H2CO
E)  SO2F) B) and D)
G) C) and D)

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

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

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

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

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What is the hybridization of the iodine atom in the IF5 molecule?

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The F - S - F bond angles in SF6 are

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According to VSEPR theory, the geometry of the PH3 molecule is best described as

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Which of the following molecules have the same geometries?

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

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Explain why CO2 is nonpolar, but OCS is polar.

Correct AnswerverifiedIn CO2 the two bond moments point in oppo...View AnswerShow Answer

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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In which one of the following molecules is the central atom sp2 hybridized?

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Consider the species Cl2+, Cl2, and Cl2-. Which of these species will be paramagnetic?

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Give the number of lone pairs around the central atom and the molecular geometry of SeF4.

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Predict the geometry around the central atom in XeO4.

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The number of pi bonds in the molecule below is

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Indicate the type of hybrid orbitals used by the central atom in CCl4.

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According to the VSEPR theory, which one of the following species should be linear?

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Give the number of lone pairs around the central atom and the geometry of the ion IBr2-.

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The geometry of the ClF3 molecule is best described as:

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Give the number of lone pairs around the central atom and the molecular geometry of SCl2.

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

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

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

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What is the hybridization of the iodine atom in the IF₅ molecule?

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The F - S - F bond angles in SF₆ are

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According to VSEPR theory, the geometry of the PH₃ molecule is best described as

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

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Explain why CO₂ is nonpolar, but OCS is polar.

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In CO₂ the two bond moments point in oppo...
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In which one of the following molecules is the central atom sp² hybridized?

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Consider the species Cl₂⁺, Cl₂, and Cl₂^-. Which of these species will be paramagnetic?

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Give the number of lone pairs around the central atom and the molecular geometry of SeF₄.

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Predict the geometry around the central atom in XeO₄.

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Indicate the type of hybrid orbitals used by the central atom in CCl₄.

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Give the number of lone pairs around the central atom and the geometry of the ion IBr₂^-.

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The geometry of the ClF₃ molecule is best described as:

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Give the number of lone pairs around the central atom and the molecular geometry of SCl₂.

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