Question 1

The hybridization of the central nitrogen atom in the molecule N2O is

Accepted Answer

A)  sp.
B)  sp2.
C)  sp3.
D)  sp3d.
E)  sp3d2.F) D) and E)
G) B) and D)

Question 2

What is the predicted molecular geometry of the IBr3 molecule according to the VSEPR model?

Accepted Answer

A)  tetrahedral
B)  T-shaped
C)  bent
D)  trigonal planar
E)  seesawF) A) and D)
G) B) and E)

Question 3

What is the number of lone electron pairs on the central atom of a molecule having a seesaw molecular geometry,such as SF4?

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  6F) B) and E)
G) C) and D)

Question 4

The Lewis structure of formaldehyde,CH2O,is shown.Use VSEPR model to predict the molecular geometry and the H-C-H bond angle.Outline your reasoning.

Accepted Answer

There are three electron groups around t...

Question 5

Predict the molecular geometry and polarity of the SO2 molecule.

Accepted Answer

A)  linear,polar
B)  linear,nonpolar
C)  bent,polar
D)  bent,nonpolar
E)  trigonal planar,polarF) All of the above
G) C) and E)

Question 6

The angles between sp2 hybrid orbitals are 109.5°.

Accepted Answer

A) True 
 B)False

Question 7

For which one of the following molecules is the indicated type of hybridization not appropriate for the central atom?

Accepted Answer

A)  BeCl2; sp2
B)  SiH4; sp3
C)  BF3; sp2
D)  C2H2; sp
E)  H2O; sp3F) All of the above
G) A) and E)

Question 8

Valence bond theory predicts that iodine will use _____ hybrid orbitals in ICl2-.

Accepted Answer

A)  sp2
B)  sp3
C)  sp3d
D)  sp3d2
E)  None of these choices is correct.F) D) and E)
G) C) and E)

Question 9

In which molecule is the central atom sp2 hybridized?

Accepted Answer

A)  SO2
B)  N2O
C)  BeCl2
D)  NF3
E)  PF5F) A) and E)
G) A) and D)

Question 10

According to molecular orbital theory,all diatomic molecules with an even number of electrons are diamagnetic.

Accepted Answer

A) True 
 B)False

Question 11

Assume that an N2 molecule absorbs a photon and goes to its first excited state.

Accepted Answer

A)  The excited N2 is less stable than N2 in the ground state.
B)  The excited N2 is more stable than N2 in the ground state.
C)  The bond length of N2 in the excited state is shorter than the bond length of N2 in the ground state.
D)  The stability of the molecule is unchanged.E) All of the above
F) B) and D)

Question 12

A molecule with the formula AB4 and a square planar molecular geometry uses _________ to form its σ bonds.

Accepted Answer

A)  sp hybrid orbitals
B)  sp2 hybrid orbitals
C)  sp3 hybrid orbitals
D)  sp3d hybrid orbitals
E)  sp3d2 hybrid orbitalsF) A) and E)
G) A) and D)

Question 13

How many π bonds are there in one molecule of 1,5-hexadiyne (shown below) ?

Accepted Answer

A)  2
B)  4
C)  6
D)  11
E)  15F) A) and E)
G) A) and C)

Question 14

What is the bond order for the species O2−?

Accepted Answer

A)  1
B)  1.5
C)  2
D)  2.5
E)  None of theF) None of the above
G) B) and E)

Question 15

Atoms of period 3 and beyond can undergo sp3d2 hybridization,but atoms of period 2 cannot.

Accepted Answer

A) True 
 B)False

Question 16

According to the VSEPR model,a molecule with the general formula AB4 with two lone pairs on the central atom will have a _____ molecular geometry.

Accepted Answer

A)  tetrahedral
B)  square pyramidal
C)  square planar
D)  octahedral
E)  seesawF) C) and D)
G) A) and B)

Question 17

Using the VSEPR model,what is the predicted molecular geometry of the PCl3 molecule?

Accepted Answer

A)  linear
B)  bent
C)  trigonal planar
D)  trigonal pyramidal
E)  tetrahedralF) B) and C)
G) A) and E)

Question 18

To correctly determine the molecular shape of a molecule requires that you first draw the Lewis structure for the molecule.

Accepted Answer

A) True 
 B)False

Question 19

What is the molecular geometry of HOF as predicted by the VSEPR model?

Accepted Answer

A)  trigonal pyramidal
B)  bent
C)  tetrahedral
D)  linear
E)  trigonal planarF) None of the above
G) A) and E)

Question 20

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

Accepted Answer

A)  square planar
B)  tetrahedral
C)  square pyramidal
D)  seesaw
E)  octahedralF) A) and E)
G) B) and E)

Exam 9: Chemical Bonding Ii Molecular Geometry and Bonding Theories

Valence bond theory predicts that iodine will use _____ hybrid orbitals in ICl2-.

Correct AnswerverifiedShow Answer

What is the predicted molecular geometry of the IBr3 molecule according to the VSEPR model?

Correct AnswerverifiedShow Answer

Atoms of period 3 and beyond can undergo sp3d2 hybridization,but atoms of period 2 cannot.

Correct AnswerverifiedShow Answer

The Lewis structure of formaldehyde,CH2O,is shown.Use VSEPR model to predict the molecular geometry and the H-C-H bond angle.Outline your reasoning.

Correct AnswerverifiedThere are three electron groups around t...View AnswerShow Answer

Predict the molecular geometry and polarity of the SO2 molecule.

Correct AnswerverifiedShow Answer

What is the number of lone electron pairs on the central atom of a molecule having a seesaw molecular geometry,such as SF4?

Correct AnswerverifiedShow Answer

The hybridization of the central nitrogen atom in the molecule N2O is

Correct AnswerverifiedShow Answer

The angles between sp2 hybrid orbitals are 109.5°.

Correct AnswerverifiedShow Answer

According to the VSEPR model,a molecule with the general formula AB4 with two lone pairs on the central atom will have a _____ molecular geometry.

Correct AnswerverifiedShow Answer

What is the molecular geometry of XeO2F2 as predicted by the VSEPR model?

Correct AnswerverifiedShow Answer

According to molecular orbital theory,all diatomic molecules with an even number of electrons are diamagnetic.

Correct AnswerverifiedShow Answer

Using the VSEPR model,what is the predicted molecular geometry of the PCl3 molecule?

Correct AnswerverifiedShow Answer

To correctly determine the molecular shape of a molecule requires that you first draw the Lewis structure for the molecule.

Correct AnswerverifiedShow Answer

What is the bond order for the species O2−?

Correct AnswerverifiedShow Answer

What is the molecular geometry of HOF as predicted by the VSEPR model?

Correct AnswerverifiedShow Answer

For which one of the following molecules is the indicated type of hybridization not appropriate for the central atom?

Correct AnswerverifiedShow Answer

A molecule with the formula AB4 and a square planar molecular geometry uses _________ to form its σ bonds.

Correct AnswerverifiedShow Answer

Assume that an N2 molecule absorbs a photon and goes to its first excited state.

Correct AnswerverifiedShow Answer

In which molecule is the central atom sp2 hybridized?

Correct AnswerverifiedShow Answer

How many π bonds are there in one molecule of 1,5-hexadiyne (shown below) ?

Correct AnswerverifiedShow Answer

Valence bond theory predicts that iodine will use _____ hybrid orbitals in ICl₂^-.

Correct Answer
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What is the predicted molecular geometry of the IBr₃ molecule according to the VSEPR model?

Correct Answer
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Atoms of period 3 and beyond can undergo sp³d² hybridization,but atoms of period 2 cannot.

Correct Answer
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The Lewis structure of formaldehyde,CH₂O,is shown.Use VSEPR model to predict the molecular geometry and the H-C-H bond angle.Outline your reasoning.

Correct Answer
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There are three electron groups around t...
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Predict the molecular geometry and polarity of the SO₂ molecule.

Correct Answer
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What is the number of lone electron pairs on the central atom of a molecule having a seesaw molecular geometry,such as SF₄?

Correct Answer
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The hybridization of the central nitrogen atom in the molecule N₂O is

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The angles between sp² hybrid orbitals are 109.5°.

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According to the VSEPR model,a molecule with the general formula AB₄ with two lone pairs on the central atom will have a _____ molecular geometry.

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What is the molecular geometry of XeO₂F₂ as predicted by the VSEPR model?

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Using the VSEPR model,what is the predicted molecular geometry of the PCl₃ molecule?

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What is the bond order for the species O₂⁻?

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A molecule with the formula AB₄ and a square planar molecular geometry uses _________ to form its σ bonds.

Correct Answer
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Assume that an N₂ molecule absorbs a photon and goes to its first excited state.

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In which molecule is the central atom sp² hybridized?

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