Question 1

What is the molecular shape of N2O as predicted by the VSEPR theory? 2O as predicted by the VSEPR theory?   A)  trigonal pyramidal B)  trigonal planar C)  angular D)  bent E)  linear" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   trigonal pyramidal
B)   trigonal planar
C)   angular
D)   bent
E)   linearF) B) and E)
G) B) and D) E

Question 2

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

Question 3

What is the molecular shape of the thiocyanate anion, SCN¯, 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) B) and D)
G) A) and B)

Question 4

What is the shape of the PF3 molecule? Explain your answer, using VSEPR theory.

Accepted Answer

The Lewis structure has a lone pair on t...

Question 5

In formaldehyde, CH2O, both the formal charge and the oxidation number of carbon are zero.

Accepted Answer

A) True 
 B)False

Question 6

Predict the ideal bond angles around nitrogen in N2F2 using the molecular shape given by the VSEPR theory. (The two N atoms are the central atoms.)

Accepted Answer

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

Question 7

Which one of the following Lewis structures is definitely incorrect?

Accepted Answer

A)   NO 2¯   
D)   SO32¯   
E)   PCl5  " class="answers-bank-image d-inline" rel="preload" >
B)   HCN 2¯   
D)   SO32¯   
E)   PCl5  " class="answers-bank-image d-inline" rel="preload" >
C)   NO2¯ 2¯   
D)   SO32¯   
E)   PCl5  " class="answers-bank-image d-inline" rel="preload" >
D)   SO32¯ 2¯   
D)   SO32¯   
E)   PCl5  " class="answers-bank-image d-inline" rel="preload" >
E)   PCl5 2¯   
D)   SO32¯   
E)   PCl5  " class="answers-bank-image d-inline" rel="preload" >F) A) and B)
G) D) and E)

Question 8

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)   -2F) A) and E)
G) A) and D)

Question 9

According to VSEPR theory, a molecule with the general formula AX3E2 will have a _____ molecular shape.

Accepted Answer

A)   trigonal pyramidal
B)   trigonal bipyramidal
C)   trigonal planar
D)   T-shaped
E)   see-sawF) C) and E)
G) A) and B)

Question 10

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-sawF) A) and E)
G) B) and D)

Question 11

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)   octahedralF) B) and C)
G) B) and D)

Question 12

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 pyramidalF) B) and C)
G) B) and D)

Question 13

The Lewis structure of NO2 violates the octet rule.

Accepted Answer

A) True 
 B)False

Question 14

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

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) None of the above
G) B) and E)

Question 15

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

Accepted Answer

A)   CO2 (C = central atom) 
B)   ClO3¯ (Cl = central atom) 
C)   COCl2 (C = central atom) 
D)   NO2+ (N = central atom) 
E)   HCN (C = central atom) F) A) and D)
G) D) and E)

Question 16

What is the molecular shape of NO2¯ as predicted by the VSEPR theory?

Accepted Answer

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

Question 17

When resonance occurs, the bond lengths in a molecule fluctuate rapidly.

Accepted Answer

A) True 
 B)False  False

Question 18

A) Draw and name three molecular shapes for molecules having the VSEPR formulas AX3, AX3E and AX3E2, respectively.
B) If the three X groups in the above formulas are identical, which of the three shapes would result in a molecule with a dipole moment?

Accepted Answer

a. The three structures and their molecular shapes are shown below.  b. The trigonal pyramidal and T-shaped molecules will have dipole moments.

Question 19

The formal charge on Cl in the structure shown for the perchlorate ion is:

Accepted Answer

A)   -2
B)   -1
C)   0
D)   +1
E)   +2F) A) and E)
G) B) and C)

Question 20

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) A) and E)
G) C) and E)

Exam 10: The Shapes of Molecules

What is the molecular shape of N2O as predicted by the VSEPR theory?

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

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What is the molecular shape of the thiocyanate anion, SCN¯, as predicted by the VSEPR theory? (Carbon is the central atom.)

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What is the shape of the PF3 molecule? Explain your answer, using VSEPR theory.

Correct AnswerverifiedThe Lewis structure has a lone pair on t...View AnswerShow Answer

In formaldehyde, CH2O, both the formal charge and the oxidation number of carbon are zero.

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Predict the ideal bond angles around nitrogen in N2F2 using the molecular shape given by the VSEPR theory. (The two N atoms are the central atoms.)

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Which one of the following Lewis structures is definitely incorrect?

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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?

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According to VSEPR theory, a molecule with the general formula AX3E2 will have a _____ molecular shape.

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

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

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

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The Lewis structure of NO2 violates the octet rule.

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

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

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What is the molecular shape of NO2¯ as predicted by the VSEPR theory?

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When resonance occurs, the bond lengths in a molecule fluctuate rapidly.

Correct AnswerverifiedFalse

A) Draw and name three molecular shapes for molecules having the VSEPR formulas AX3, AX3E and AX3E2, respectively. B) If the three X groups in the above formulas are identical, which of the three shapes would result in a molecule with a dipole moment?

Correct Answerverifieda. The three structures and their molecular shapes are shown below. 11eb16b3_000b_7536_984d_270eb4710285_TB7799_00 b. The trigonal pyramidal and T-shaped molecules will have dipole moments.

The formal charge on Cl in the structure shown for the perchlorate ion is:

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

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What is the molecular shape of N₂O as predicted by the VSEPR theory?

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E

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

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What is the molecular shape of the thiocyanate anion, SCN^¯, as predicted by the VSEPR theory? (Carbon is the central atom.)

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What is the shape of the PF₃ molecule? Explain your answer, using VSEPR theory.

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The Lewis structure has a lone pair on t...
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In formaldehyde, CH₂O, both the formal charge and the oxidation number of carbon are zero.

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Predict the ideal bond angles around nitrogen in N₂F₂ using the molecular shape given by the VSEPR theory. (The two N atoms are the central atoms.)

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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?

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According to VSEPR theory, a molecule with the general formula AX₃E₂ will have a _____ molecular shape.

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

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

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The Lewis structure of NO₂ violates the octet rule.

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What is the molecular shape of NO₂^¯ as predicted by the VSEPR theory?

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False

A) Draw and name three molecular shapes for molecules having the VSEPR formulas AX₃, AX₃E and AX₃E₂, respectively. B) If the three X groups in the above formulas are identical, which of the three shapes would result in a molecule with a dipole moment?

Correct Answer
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a. The three structures and their molecular shapes are shown below. 11eb16b3_000b_7536_984d_270eb4710285_TB7799_00 b. The trigonal pyramidal and T-shaped molecules will have dipole moments.

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

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