Question 1

What is the molecular symmetry around the carbons in CCl2CH2 as predicted by the VSEPR theory?

Accepted Answer

A)   linear
B)   trigonal planar
C)   V-shaped
D)   tetrahedral
E)   trigonal pyramidalF) C) and E)
G) A) and B)

Question 2

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

Accepted Answer

A)   4-. 
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B)   4-. 
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C)   4-. 
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D)   4-. 
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E)   4-. 
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G) B) and C)

Question 3

According to VSEPR theory, a molecule with the general formula AX4E will have a _____ molecular shape.

Accepted Answer

A)   bent
B)   see-saw
C)   trigonal planar
D)   T-shaped
E)   square planarF) None of the above
G) C) and E)

Question 4

For the chlorate ion, ClO3-, draw two different valid Lewis structures, as follows:
a. a structure in which the octet rule is obeyed
b. a structure in which formal charges are minimized

Accepted Answer

A)11ec6d41_55eb_0544_9cd1_2df...

Question 5

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 D)
G) A) and E)

Question 6

Predict the ideal bond angles in IF2- using the molecular shape given by the VSEPR theory.

Accepted Answer

A)   60°
B)   90°
C)   109°
D)   120°
E)   180°F) A) and B)
G) All of the above

Question 7

In which of the following does the nitrogen atom have a formal charge of -1?

Accepted Answer

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

Question 8

Which of the following molecules has a net dipole moment?

Accepted Answer

A)   BeCl2
B)   SF2
C)   KrF2
D)   CO2
E)   CCl4F) A) and C)
G) C) and E)

Question 9

What is the molecular shape of NH2Cl as predicted by the VSEPR theory?

Accepted Answer

A)   trigonal pyramidal
B)   tetrahedral
C)   T-shaped
D)   see-saw
E)   trigonal planarF) B) and C)
G) B) and E)

Question 10

According to VSEPR theory, a molecule with the general formula AX2E will have a ______ molecular shape.

Accepted Answer

A)   bent
B)   see-saw
C)   trigonal planar
D)   T-shaped
E)   trigonal pyramidalF) A) and C)
G) All of the above

Question 11

According to VSEPR theory, a molecule with the general formula AX4E2 will have a _____ molecular shape.

Accepted Answer

A)   tetrahedral
B)   square pyramidal
C)   square planar
D)   octahedral
E)   see-sawF) None of the above
G) C) and D)

Question 12

The Lewis structure of NO2 violates the octet rule.

Accepted Answer

A) True 
 B)False

Question 13

Name and outline the concept which is introduced when more than one valid Lewis structure can be drawn for a given molecule or ion. Use appropriate diagrams of the formate ion (HCO2-, carbon is the central atom) to illustrate.

Accepted Answer

The concept is resonance. In this situat...

Question 14

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

Question 15

All possible resonance structures contribute equally to the resonance hybrid.

Accepted Answer

A) True 
 B)False

Question 16

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

Accepted Answer

A)   bent
B)   trigonal planar
C)   trigonal pyramidal
D)   tetrahedral
E)   triangularF) B) and E)
G) B) and C)

Question 17

In neutral molecules, how many bonds are commonly formed by nitrogen? And how many by oxygen?

Accepted Answer

A)   5 and 6
B)   4 and 2
C)   3 and 6
D)   4 and 6
E)   3 and 2F) A) and E)
G) A) and B)

Question 18

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

Accepted Answer

A)   0
B)   1
C)   2
D)   3
E)   4F) A) and B)
G) B) and E)

Question 19

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 the aboveF) A) and D)
G) A) and E)

Question 20

Predict the ideal bond angles in GeCl4 using the molecular shape given by the VSEPR theory.

Accepted Answer

A)   90°
B)   109°
C)   120°
D)   180°
E)   < 90°F) D) and E)
G) B) and D)

Exam 10: The Shapes of Molecules

Predict the ideal bond angles in IF2- using the molecular shape given by the VSEPR theory.

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

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

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

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Which of the following molecules has a net dipole moment?

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All possible resonance structures contribute equally to the resonance hybrid.

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What is the molecular shape of NH2Cl as predicted by the VSEPR theory?

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For the chlorate ion, ClO3-, draw two different valid Lewis structures, as follows: a. a structure in which the octet rule is obeyed b. a structure in which formal charges are minimized

Correct AnswerverifiedA)11ec6d41_55eb_0544_9cd1_2df...View AnswerShow Answer

Predict the ideal bond angles in GeCl4 using the molecular shape given by the VSEPR theory.

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Name and outline the concept which is introduced when more than one valid Lewis structure can be drawn for a given molecule or ion. Use appropriate diagrams of the formate ion (HCO2-, carbon is the central atom) to illustrate.

Correct AnswerverifiedThe concept is resonance. In this situat...View AnswerShow Answer

In neutral molecules, how many bonds are commonly formed by nitrogen? And how many by oxygen?

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In which of the following does the nitrogen atom have a formal charge of -1?

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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?

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

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

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What is the molecular symmetry around the carbons in CCl2CH2 as predicted by the VSEPR theory?

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According to VSEPR theory, a molecule with the general formula AX4E2 will have a _____ molecular shape.

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According to VSEPR theory, a molecule with the general formula AX4E will have a _____ molecular shape.

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The Lewis structure of NO2 violates the octet rule.

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According to VSEPR theory, a molecule with the general formula AX2E will have a ______ molecular shape.

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Predict the ideal bond angles in IF₂^-using the molecular shape given by the VSEPR theory.

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

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

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What is the molecular shape of NH₂Cl as predicted by the VSEPR theory?

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For the chlorate ion, ClO₃^-, draw two different valid Lewis structures, as follows: a. a structure in which the octet rule is obeyed b. a structure in which formal charges are minimized

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Predict the ideal bond angles in GeCl₄using the molecular shape given by the VSEPR theory.

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Name and outline the concept which is introduced when more than one valid Lewis structure can be drawn for a given molecule or ion. Use appropriate diagrams of the formate ion (HCO₂^-, carbon is the central atom) to illustrate.

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The concept is resonance. In this situat...
View Answer

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What is the molecular symmetry around the carbons in CCl₂CH₂as predicted by the VSEPR theory?

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According to VSEPR theory, a molecule with the general formula AX₄E₂will have a _____ molecular shape.

Correct Answer
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According to VSEPR theory, a molecule with the general formula AX₄E will have a _____ molecular shape.

Correct Answer
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The Lewis structure of NO₂ violates the octet rule.

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According to VSEPR theory, a molecule with the general formula AX₂E will have a ______ molecular shape.

Correct Answer
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