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Hydrazine, N2H4, is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure.


A) Hydrazine, N<sub>2</sub>H<sub>4</sub>, is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure. A) B) C) D) E) None of these choices are correct.
B) Hydrazine, N<sub>2</sub>H<sub>4</sub>, is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure. A) B) C) D) E) None of these choices are correct.
C) Hydrazine, N<sub>2</sub>H<sub>4</sub>, is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure. A) B) C) D) E) None of these choices are correct.
D) Hydrazine, N<sub>2</sub>H<sub>4</sub>, is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure. A) B) C) D) E) None of these choices are correct.
E) None of these choices are correct.

F) C) and D)
G) A) and E)

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According to VSEPR theory, a molecule with the general formula AX2 will have a __________ molecular shape.


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

F) A) and E)
G) A) and B)

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What is the molecular shape of N2O as predicted by the VSEPR theory? What is the molecular shape of N<sub>2</sub>O as predicted by the VSEPR theory? A) Trigonal pyramidal B) Trigonal planar C) Angular D) Bent E) Linear


A) Trigonal pyramidal
B) Trigonal planar
C) Angular
D) Bent
E) Linear

F) B) and E)
G) A) and C)

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The best Lewis structure for sulfuric acid has zero formal charges, sulfur as the central atom, and no bonds between S and H. How many single and double bonds, respectively, are there in this Lewis structure?


A) 2 single, 4 double
B) 4 single, 2 double
C) 4 single, no double
D) 6 single, no double
E) 5 single, 1 double

F) None of the above
G) A) and E)

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Predict the actual bond angle in SeCl2 using the VSEPR theory.


A) more than 120°
B) between 109° and 120°
C) between 90° and 109°
D) exactly 90°
E) less than 90°

F) C) and D)
G) A) and D)

Correct Answer

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In which one of the following species is the best Lewis structure a resonance structure?


A) NH 3
B) CO 2
C) SF 6
D) O 2
E) CO 3 2−

F) C) and D)
G) A) and E)

Correct Answer

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According to VSEPR theory, a molecule with the general formula AX2E3 will have a __________ molecular shape.


A) bent
B) linear
C) trigonal planar
D) T-shaped
E) trigonal pyramidal

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

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Thionyl chloride is used as an oxidizing and chlorinating agent in organic chemistry. Select the best Lewis structure for SOCl2.


A) Thionyl chloride is used as an oxidizing and chlorinating agent in organic chemistry. Select the best Lewis structure for SOCl<sub>2</sub>. A) B) C) D) E) None of these choices are correct.
B) Thionyl chloride is used as an oxidizing and chlorinating agent in organic chemistry. Select the best Lewis structure for SOCl<sub>2</sub>. A) B) C) D) E) None of these choices are correct.
C) Thionyl chloride is used as an oxidizing and chlorinating agent in organic chemistry. Select the best Lewis structure for SOCl<sub>2</sub>. A) B) C) D) E) None of these choices are correct.
D) Thionyl chloride is used as an oxidizing and chlorinating agent in organic chemistry. Select the best Lewis structure for SOCl<sub>2</sub>. A) B) C) D) E) None of these choices are correct.
E) None of these choices are correct.

F) B) and D)
G) C) and D)

Correct Answer

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In the hemoglobin molecule that carries oxygen molecules in blood, iron has 6 single bonds to surrounding atoms. What is the most likely geometry of these bonds to iron?


A) Planar
B) Linear
C) Tetrahedral
D) Octahedral
E) Trigonal pyramidal

F) None of the above
G) B) and D)

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Which one of the following Lewis structures is definitely incorrect?


A) Which one of the following Lewis structures is definitely incorrect? A) B) C) D) E)
B) Which one of the following Lewis structures is definitely incorrect? A) B) C) D) E)
C) Which one of the following Lewis structures is definitely incorrect? A) B) C) D) E)
D) Which one of the following Lewis structures is definitely incorrect? A) B) C) D) E)
E) Which one of the following Lewis structures is definitely incorrect? A) B) C) D) E)

F) A) and B)
G) A) and E)

Correct Answer

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According to VSEPR theory, a molecule with the general formula AX5E will have a __________ molecular shape.


A) tetrahedral
B) trigonal bipyramidal
C) square pyramidal
D) octahedral
E) see-saw

F) B) and D)
G) A) and B)

Correct Answer

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In carbon disulfide, how many lone pairs of electrons are on each sulfur atom?


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

F) C) and E)
G) C) and D)

Correct Answer

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According to VSEPR theory, a molecule with the general formula AX3E will have a __________ molecular shape.


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

F) A) and B)
G) B) and D)

Correct Answer

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In which one of the following is the best Lewis structure a resonance structure?


A) SO 3
B) BF 3
C) I 3 −
D) SCO (C = central atom)
E) SO 3 2−

F) B) and E)
G) A) and B)

Correct Answer

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Which of the following has no net dipole moment?


A) N 2O
B) NF 3
C) H 2Se
D) TeO 3
E) CH 3Cl

F) D) and E)
G) B) and E)

Correct Answer

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Select the correct Lewis structure for nitrogen trifluoride, NF3.


A) Select the correct Lewis structure for nitrogen trifluoride, NF<sub>3</sub>. A) B) C) D) E)
B) Select the correct Lewis structure for nitrogen trifluoride, NF<sub>3</sub>. A) B) C) D) E)
C) Select the correct Lewis structure for nitrogen trifluoride, NF<sub>3</sub>. A) B) C) D) E)
D) Select the correct Lewis structure for nitrogen trifluoride, NF<sub>3</sub>. A) B) C) D) E)
E) Select the correct Lewis structure for nitrogen trifluoride, NF<sub>3</sub>. A) B) C) D) E)

F) D) and E)
G) C) and E)

Correct Answer

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Select the Lewis structure in which formal charges are minimized for the periodate anion, IO4−.


A) Select the Lewis structure in which formal charges are minimized for the periodate anion, IO<sub>4</sub><sup>−</sup>. A) B) C) D) E)
B) Select the Lewis structure in which formal charges are minimized for the periodate anion, IO<sub>4</sub><sup>−</sup>. A) B) C) D) E)
C) Select the Lewis structure in which formal charges are minimized for the periodate anion, IO<sub>4</sub><sup>−</sup>. A) B) C) D) E)
D) Select the Lewis structure in which formal charges are minimized for the periodate anion, IO<sub>4</sub><sup>−</sup>. A) B) C) D) E)
E) Select the Lewis structure in which formal charges are minimized for the periodate anion, IO<sub>4</sub><sup>−</sup>. A) B) C) D) E)

F) B) and E)
G) A) and B)

Correct Answer

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Predict the smallest actual bond angle in BrF3 using the VSEPR theory.


A) more than 120°
B) exactly 120°
C) between 109° and 120°
D) between 90° and 109°
E) less than 90°

F) A) and D)
G) A) and B)

Correct Answer

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