Question 1

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) None of the above
G) B) and C)

Question 2

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

Question 3

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

Accepted Answer

A)  CS2
B)  H2S
C)  CH2Cl2
D)  PH3
E)  CH2OF) D) and E)
G) All of the above

Question 4

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 B)
G) C) and D)

Question 5

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) A) and D)
G) None of the above

Question 6

Draw Lewis structures,showing all valence electrons,for the following species:
a.S2-
 b.CO
c.SO2
 d.CH3OH

Accepted Answer

Question 7

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 situati...

Question 8

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 9

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 B)

Question 10

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

Question 11

Use VSEPR theory to decide which one of the following molecules and ions will have a trigonal pyramidal geometry.(The central atom is always first in the formula. )

Accepted Answer

A)  PCl3
B)  BF3
C)  SO3
D)  BrF3
E)  CO32-F) A) and D)
G) None of the above

Question 12

Which one of the following Lewis structures is definitely incorrect?

Accepted Answer

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

Question 13

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 14

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) A) and B)
G) A) and C)

Question 15

Predict the ideal bond angles in AsCl3 using the molecular shape given by the VSEPR theory.

Accepted Answer

A)  90°
B)  109°
C)  120°
D)  180°
E)  between 110 and 120°F) B) and C)
G) A) and E)

Question 16

What is the molecular shape of BeH2 as predicted by the VSEPR theory?

Accepted Answer

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

Question 17

Which one of the following Lewis structures is definitely incorrect?

Accepted Answer

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

Question 18

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)  HCNF) C) and E)
G) All of the above

Question 19

Predict the actual bond angles in BrF3 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) C) and E)
G) All of the above

Question 20

Which one of the following Lewis structures is definitely incorrect?

Accepted Answer

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

Exam 10: The Shapes of Molecules

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

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Which one of the following Lewis structures is definitely incorrect?

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Which one of the following Lewis structures is definitely incorrect?

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

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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 situati...View AnswerShow Answer

Use VSEPR theory to decide which one of the following molecules and ions will have a trigonal pyramidal geometry.(The central atom is always first in the formula. )

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

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Which one of the following Lewis structures is definitely incorrect?

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Draw Lewis structures,showing all valence electrons,for the following species: a.S2- b.CO c.SO2 d.CH3OH

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What is the molecular shape of BeH2 as predicted by the VSEPR theory?

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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.

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

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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.

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

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

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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 AsCl3 using the molecular shape given by the VSEPR theory.

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

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Predict the actual bond angles in BrF3 using 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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What is the molecular shape of XeO₂F₂ as predicted by the VSEPR theory?

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

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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 situati...
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What is the molecular shape of ClF₄^- as predicted by the VSEPR theory?

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Draw Lewis structures,showing all valence electrons,for the following species: a.S^2- b.CO c.SO₂ d.CH₃OH

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What is the molecular shape of BeH₂ as predicted by the VSEPR theory?

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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 AX₂E will have a ______ molecular shape.

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Predict the ideal bond angles in AsCl₃ using the molecular shape given by the VSEPR theory.

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Predict the actual bond angles in BrF₃ using 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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