Question 1

The molecule AX2,where A and X are different elements,will have a dipole moment if the molecule is bent.

Accepted Answer

A) True 
 B)False

Question 2

Draw all important resonance structures of the nitrate ion,NO3-

Accepted Answer

Question 3

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

Question 4

The Lewis structure of NO2 violates the octet rule.

Accepted Answer

A) True 
 B)False

Question 5

According to VSEPR theory,a molecule with the general formula AX5 will have a ______ molecular shape.

Accepted Answer

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

Question 6

All possible resonance structures contribute equally to the resonance hybrid.

Accepted Answer

A) True 
 B)False

Question 7

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

Accepted Answer

A)  a
B)  b
C)  c
D)  d
E)  eF) B) and D)
G) C) and D)

Question 8

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

Accepted Answer

A)  more than 120°
B)  between 109° and 120°
C)  between 90° and 109°
D)  exactly 90°
E)  less than 90°F) B) and C)
G) None of the above

Question 9

Draw Lewis structures,showing all valence electrons,for:
a.N
b.Br-
 c.O2
 d.SO42-

Accepted Answer

Question 10

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°F) A) and E)
G) B) and E)

Question 11

Which of the following has no net dipole moment?

Accepted Answer

A)  N2O
B)  NF3
C)  H2Se
D)  TeO3
E)  CH3ClF) A) and C)
G) A) and B)

Question 12

What is the molecular shape of ClF2- as predicted by the VSEPR theory?

Accepted Answer

A)  linear
B)  bent
C)  see-saw
D)  T-shaped
E)  L-shapedF) A) and B)
G) None of the above

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

Draw the Lewis structure of XeF4.Use this structure,in conjunction with VSEPR theory,to predict the shape of this molecule.Outline your reasoning.

Accepted Answer

The Lewis structure is shown alongside.T...

Question 15

In the following Lewis structure for ClO3F,chlorine has a formal charge of ____ and an oxidation number of ____. 3F,chlorine has a formal charge of ____ and an oxidation number of ____.   A) 7,7 B) 7,-1 C) 1,1 D) 1,-1 E) 1,7" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  7,7
B)  7,-1
C)  1,1
D)  1,-1
E)  1,7F) C) and D)
G) B) and E)

Question 16

Use VSEPR theory to decide which one of the following ions and molecules is likely to be planar.(The central atom is always first in the formula. )

Accepted Answer

A)  BrF3
B)  H3O+
C)  PCl3
D)  SO42-
E)  SF4F) A) and B)
G) B) and D)

Question 17

Using SO2 as an example,describe the sort of experimental data which might suggest that no single Lewis structure is an accurate representation of its bonding.

Accepted Answer

In the SO₂ molecule,the two sulfur-oxygen...

Question 18

Phosphoryl iodide is used in the preparation of organophosphorus derivatives and phosphate esters.Select the Lewis structure for POI3 which minimizes formal charges. 3 which minimizes formal charges.   A) a B) b C) c D) d E) e" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  a
B)  b
C)  c
D)  d
E)  eF) A) and D)
G) B) and D)

Question 19

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

Question 20

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 th...

Exam 10: The Shapes of Molecules

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 Answerverified(a)The three structures and th...View AnswerShow Answer

The molecule AX2,where A and X are different elements,will have a dipole moment if the molecule is bent.

Correct AnswerverifiedShow Answer

According to VSEPR theory,a molecule with the general formula AX5 will have a ______ molecular shape.

Correct AnswerverifiedShow Answer

Using SO2 as an example,describe the sort of experimental data which might suggest that no single Lewis structure is an accurate representation of its bonding.

Correct AnswerverifiedIn the SO2 molecule,the two sulfur-oxygen...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following has no net dipole moment?

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

Correct AnswerverifiedShow Answer

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

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Draw Lewis structures,showing all valence electrons,for: a.N b.Br- c.O2 d.SO42-

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Draw all important resonance structures of the nitrate ion,NO3-

Correct AnswerverifiedShow Answer

All possible resonance structures contribute equally to the resonance hybrid.

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Draw the Lewis structure of XeF4.Use this structure,in conjunction with VSEPR theory,to predict the shape of this molecule.Outline your reasoning.

Correct AnswerverifiedThe Lewis structure is shown alongside.T...View AnswerShow Answer

What is the molecular shape of ClF2- as predicted by the VSEPR theory?

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In the following Lewis structure for ClO3F,chlorine has a formal charge of ____ and an oxidation number of ____.

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

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The Lewis structure of NO2 violates the octet rule.

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

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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

Use VSEPR theory to decide which one of the following ions and molecules is likely to be planar.(The central atom is always first in the formula. )

Correct AnswerverifiedShow Answer

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

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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?

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(a)The three structures and th...
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The molecule AX₂,where A and X are different elements,will have a dipole moment if the molecule is bent.

Correct Answer
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According to VSEPR theory,a molecule with the general formula AX₅ will have a ______ molecular shape.

Correct Answer
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Using SO₂ as an example,describe the sort of experimental data which might suggest that no single Lewis structure is an accurate representation of its bonding.

Correct Answer
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In the SO₂ molecule,the two sulfur-oxygen...
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According to VSEPR theory,a molecule with the general formula AX₃E will have a _____ molecular shape.

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

Correct Answer
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Draw Lewis structures,showing all valence electrons,for: a.N b.Br^- c.O₂ d.SO₄^2-

Correct Answer
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Draw all important resonance structures of the nitrate ion,NO₃^-

Correct Answer
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Draw the Lewis structure of XeF₄.Use this structure,in conjunction with VSEPR theory,to predict the shape of this molecule.Outline your reasoning.

Correct Answer
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The Lewis structure is shown alongside.T...
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What is the molecular shape of ClF₂^- as predicted by the VSEPR theory?

Correct Answer
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In the following Lewis structure for ClO₃F,chlorine has a formal charge of and an oxidation number of .

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

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

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

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

Correct Answer
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