Question 1

Select the best Lewis structure for ClCN.

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 2

What is the molecular shape of XeO2F2 as predicted by the VSEPR theory? 2F2 as predicted by the VSEPR theory?   A)  square planar B)  tetrahedral C)  square pyramidal D)  see-saw E)  octahedral" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 3

In the COCl2 molecule, carbon is the central atom. Based on the best Lewis structure for COCl2, what is the formal charge on carbon?

Accepted Answer

A)   0
B)   +1
C)   -1
D)   +2
E)   -2

Question 4

Bond angles of 180° only occur around atoms which display linear molecular geometry.

Accepted Answer

A) True 
 B)False

Question 5

In which one of the following is the best Lewis structure a resonance structure? (central atoms are bold)

Accepted Answer

A)   CO2
B)   ClO3-
C)   COCl2
D)   NO2+
E)   HCN

Question 6

How many electron pairs are shared between the carbon atoms in C2H4?

Accepted Answer

A)   5
B)   4
C)   3
D)   2
E)   1

Question 7

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-saw

Question 8

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

Accepted Answer

A)   NH3
B)   CO2
C)   SF6
D)   O2
E)   CO32-

Question 9

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)   octahedral

Question 10

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 planar

Question 11

Predict the actual bond angles in SF3+ using the VSEPR theory.

Accepted Answer

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

Question 12

Select the Lewis structure for XeO2F2 that correctly minimizes formal charges.

Accepted Answer

A)   2F2 that correctly minimizes formal charges. 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
B)   2F2 that correctly minimizes formal charges. 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
C)   2F2 that correctly minimizes formal charges. 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
D)   2F2 that correctly minimizes formal charges. 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
E)   2F2 that correctly minimizes formal charges. 
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >

Question 13

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

Accepted Answer

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

Question 14

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

Accepted Answer

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

Question 15

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?

Accepted Answer

A)   planar
B)   linear
C)   tetrahedral
D)   octahedral
E)   trigonal pyramidal

Question 16

In the nitrate ion (NO3-) , nitrogen and oxygen are held together by

Accepted Answer

A)   ionic interactions.
B)   covalent bonds.
C)   dative bonds.
D)   electronegativity.
E)   network bonds.

Question 17

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

Accepted Answer

A)   tetrahedral
B)   see-saw
C)   square planar
D)   either tetrahedral or square planar
E)   any of the above shapes

Question 18

Use VSEPR theory to predict the electron group arrangement around iodine, the central atom in the ion IF2-.

Accepted Answer

A)   octahedral
B)   trigonal bipyramidal
C)   tetrahedral
D)   trigonal planar
E)   bent

Question 19

Select the best Lewis structure for P2I4.

Accepted Answer

A)   2I4. 
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
B)   2I4. 
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
C)   2I4. 
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
D)   2I4. 
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
E)   None of these choices are correct.

Question 20

The formal charges on Cl and O in the structure shown for the ClO- ion are, respectively - ion are, respectively    A)  0 and -1 B)  -1 and 0 C)  1 and -2 D)  -2 and 1 E)  None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   0 and -1
B)   -1 and 0
C)   1 and -2
D)   -2 and 1
E)   None of these choices are correct.

Exam 10: The Shapes of Molecules

Select the best Lewis structure for P2I4.

Correct AnswerverifiedShow Answer

What is the molecular shape of XeO2F2 as predicted by the VSEPR theory?

Correct AnswerverifiedShow Answer

In which one of the following is the best Lewis structure a resonance structure? (central atoms are bold)

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Select the best Lewis structure for ClCN.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Bond angles of 180° only occur around atoms which display linear molecular geometry.

Correct AnswerverifiedShow Answer

In the nitrate ion (NO3-) , nitrogen and oxygen are held together by

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

How many electron pairs are shared between the carbon atoms in C2H4?

Correct AnswerverifiedShow Answer

Use VSEPR theory to predict the electron group arrangement around iodine, the central atom in the ion IF2-.

Correct AnswerverifiedShow Answer

The formal charges on Cl and O in the structure shown for the ClO- ion are, respectively

Correct AnswerverifiedShow Answer

In the COCl2 molecule, carbon is the central atom. Based on the best Lewis structure for COCl2, what is the formal charge on carbon?

Correct AnswerverifiedShow Answer

Select the Lewis structure for XeO2F2 that correctly minimizes formal charges.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Predict the actual bond angles in SF3+ using the VSEPR theory.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Select the best Lewis structure for P₂I₄.

Correct Answer
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What is the molecular shape of XeO₂F₂ as predicted by the VSEPR theory?

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

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

Correct Answer
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What is the molecular shape of SiF₆^2- as predicted by the VSEPR theory?

Correct Answer
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Correct Answer
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In the nitrate ion (NO₃^-) , nitrogen and oxygen are held together by

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

Correct Answer
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How many electron pairs are shared between the carbon atoms in C₂H₄?

Correct Answer
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Use VSEPR theory to predict the electron group arrangement around iodine, the central atom in the ion IF₂^-.

Correct Answer
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The formal charges on Cl and O in the structure shown for the ClO^- ion are, respectively

Correct Answer
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In the COCl₂ molecule, carbon is the central atom. Based on the best Lewis structure for COCl₂, what is the formal charge on carbon?

Correct Answer
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Select the Lewis structure for XeO₂F₂ that correctly minimizes formal charges.

Correct Answer
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Correct Answer
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Predict the actual bond angles in SF₃⁺ using the VSEPR theory.

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

Correct Answer
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