Question 1

What is the molecular shape of ClCN as predicted by the VSEPR theory? (Carbon is the central atom.)

Accepted Answer

A)   linear
B)   bent
C)   angular
D)   trigonal
E)   None of these choices is correct.F) D) and E)
G) B) and D)

Question 2

Draw Lewis structures, showing all valence electrons, for the following species:
A) S2¯
b. CO
C) SO2
d. CH3OH

Accepted Answer

Question 3

In the following Lewis structure for phosphate, phosphorus has a formal charge of ____ and an oxidation number of ____.

Accepted Answer

A)   0, -3
B)   0, 5
C)   5, -3
D)   5, 5
E)   3, 5F) B) and E)
G) A) and E)

Question 4

Which one of the following molecules does not have a dipole moment?

Accepted Answer

A)   CS2
B)   H2S
C)   CH2Cl2
D)   PH3
E)   CH2OF) B) and C)
G) C) and E)

Question 5

Draw Lewis structures, showing all valence electrons, for:
A) N
B) Br¯
c. O2
d. SO42¯

Accepted Answer

Question 6

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

Accepted Answer

A)   2. 
A)     
B)     
C)     
D)     
E)   None of these structures is suitable for SOCl2." class="answers-bank-image d-inline" rel="preload" >
B)   2. 
A)     
B)     
C)     
D)     
E)   None of these structures is suitable for SOCl2." class="answers-bank-image d-inline" rel="preload" >
C)   2. 
A)     
B)     
C)     
D)     
E)   None of these structures is suitable for SOCl2." class="answers-bank-image d-inline" rel="preload" >
D)   2. 
A)     
B)     
C)     
D)     
E)   None of these structures is suitable for SOCl2." class="answers-bank-image d-inline" rel="preload" >
E)   None of these structures is suitable for SOCl2.F) A) and D)
G) C) and D)

Question 7

Phosphoryl iodide is used in the preparation of organophosphorus derivatives and phosphate esters. Select the Lewis structure for POI3 which minimizes formal charges.

Accepted Answer

A)   3 which minimizes formal charges. 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
B)   3 which minimizes formal charges. 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
C)   3 which minimizes formal charges. 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
D)   3 which minimizes formal charges. 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
E)   3 which minimizes formal charges. 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >F) C) and D)
G) All of the above

Question 8

According to VSEPR theory, a molecule with the general formula AX3 will have a ______ molecular shape.

Accepted Answer

A)   linear
B)   bent
C)   trigonal planar
D)   tetrahedral
E)   trigonal pyramidalF) B) and E)
G) A) and D)

Question 9

Explain what is meant by "dipole moment", and give an example of a molecule which has polar bonds but which does not itself have a dipole moment.

Accepted Answer

A dipole moment arises in a molecule whe...

Question 10

List all possible molecular geometries (shapes)  for a nonpolar molecule with the formula AX4.

Accepted Answer

A)   tetrahedral
B)   seesaw
C)   square planar
D)   either tetrahedral or square planar
E)   All of these choices are possible.F) A) and E)
G) B) and C)

Question 11

In order for a non-cyclic triatomic molecule to be bent, VSEPR theory requires that there must be two lone pairs on the central atom.

Accepted Answer

A) True 
 B)False

Question 12

Considering all the bonds in a molecule with trigonal bipyramidal geometry, what are the bond angles present?

Accepted Answer

A)   120  °\degree°  only
B)   90  °\degree°  only
C)   180  °\degree°  only
D)   60  °\degree°  and 90  °\degree° only
E)   90  °\degree° , 120  °\degree° and 180  °\degree°F) A) and E)
G) None of the above

Question 13

What is the molecular shape of ClF4¯ as predicted by the VSEPR theory?

Accepted Answer

A)   square pyramidal
B)   square planar
C)   see-saw
D)   octahedral
E)   tetrahedralF) A) and E)
G) A) and D)

Question 14

According to VSEPR theory, a molecule with the general formula AX4 will have a ______ molecular shape.

Accepted Answer

A)   bent
B)   trigonal planar
C)   trigonal pyramidal
D)   square planar
E)   tetrahedralF) A) and D)
G) C) and E)

Question 15

Boron never achieves an octet in any of its compounds.

Accepted Answer

A) True 
 B)False

Question 16

In a Lewis structure for a molecule or ion, the sum of the formal charges on the atoms is equal to the charge on the molecule or ion.

Accepted Answer

A) True 
 B)False

Question 17

What is the molecular shape of SiF62¯ as predicted by the VSEPR theory? 62¯ as predicted by the VSEPR theory?   A)  trigonal bipyramidal B)  hexagonal C)  tetrahedral D)  see-saw E)  octahedral" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   trigonal bipyramidal
B)   hexagonal
C)   tetrahedral
D)   see-saw
E)   octahedralF) A) and E)
G) B) and D)

Question 18

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

Accepted Answer

A)   2H4, 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 is correct." class="answers-bank-image d-inline" rel="preload" >
B)   2H4, 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 is correct." class="answers-bank-image d-inline" rel="preload" >
C)   2H4, 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 is correct." class="answers-bank-image d-inline" rel="preload" >
D)   2H4, 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 is correct." class="answers-bank-image d-inline" rel="preload" >
E)   None of these choices is correct.F) C) and E)
G) A) and D)

Question 19

How many faces and how many vertexes (corners) , respectively, are there in a trigonal bipyramid?

Accepted Answer

A)   4 and 4
B)   5 and 5
C)   5 and 6
D)   6 and 5
E)   6 and 8F) B) and C)
G) None of the above

Question 20

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?

Accepted Answer

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

Exam 10: The Shapes of Molecules

What is the molecular shape of SiF62¯ as predicted by the VSEPR theory?

Correct AnswerverifiedShow Answer

Boron never achieves an octet in any of its compounds.

Correct AnswerverifiedShow Answer

List all possible molecular geometries (shapes) for a nonpolar molecule with the formula AX4.

Correct AnswerverifiedShow Answer

According to VSEPR theory, a molecule with the general formula AX4 will have a ______ molecular shape.

Correct AnswerverifiedShow Answer

In the following Lewis structure for phosphate, phosphorus has a formal charge of ____ and an oxidation number of ____.

Correct AnswerverifiedShow Answer

Draw Lewis structures, showing all valence electrons, for: A) N B) Br¯ c. O2 d. SO42¯

Correct AnswerverifiedShow Answer

Draw Lewis structures, showing all valence electrons, for the following species: A) S2¯ b. CO C) SO2 d. CH3OH

Correct AnswerverifiedShow Answer

Phosphoryl iodide is used in the preparation of organophosphorus derivatives and phosphate esters. Select the Lewis structure for POI3 which minimizes formal charges.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Explain what is meant by "dipole moment", and give an example of a molecule which has polar bonds but which does not itself have a dipole moment.

Correct AnswerverifiedA dipole moment arises in a molecule whe...View AnswerShow Answer

In order for a non-cyclic triatomic molecule to be bent, VSEPR theory requires that there must be two lone pairs on the central atom.

Correct AnswerverifiedShow Answer

According to VSEPR theory, a molecule with the general formula AX3 will have a ______ molecular shape.

Correct AnswerverifiedShow Answer

What is the molecular shape of ClCN as predicted by the VSEPR theory? (Carbon is the central atom.)

Correct AnswerverifiedShow Answer

In a Lewis structure for a molecule or ion, the sum of the formal charges on the atoms is equal to the charge on the molecule or ion.

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

How many faces and how many vertexes (corners) , respectively, are there in a trigonal bipyramid?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which one of the following molecules does not have a dipole moment?

Correct AnswerverifiedShow Answer

Considering all the bonds in a molecule with trigonal bipyramidal geometry, what are the bond angles present?

Correct AnswerverifiedShow Answer

What is the molecular shape of ClF4¯ as predicted by the VSEPR theory?

Correct AnswerverifiedShow Answer

What is the molecular shape of SiF₆^2¯ as predicted by the VSEPR theory?

Correct Answer
verified

Correct Answer
verified

List all possible molecular geometries (shapes) for a nonpolar molecule with the formula AX₄.

Correct Answer
verified

According to VSEPR theory, a molecule with the general formula AX₄ will have a ______ molecular shape.

Correct Answer
verified

In the following Lewis structure for phosphate, phosphorus has a formal charge of and an oxidation number of .

Correct Answer
verified

Draw Lewis structures, showing all valence electrons, for: A) N B) Br^¯c. O₂d. SO₄^2¯

Correct Answer
verified

Draw Lewis structures, showing all valence electrons, for the following species: A) S^2¯b. CO C) SO₂d. CH₃OH

Correct Answer
verified

Phosphoryl iodide is used in the preparation of organophosphorus derivatives and phosphate esters. Select the Lewis structure for POI₃ which minimizes formal charges.

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified
A dipole moment arises in a molecule whe...
View Answer

Correct Answer
verified

According to VSEPR theory, a molecule with the general formula AX₃ will have a ______ molecular shape.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What is the molecular shape of ClF₄^¯ as predicted by the VSEPR theory?

Correct Answer
verified