Question 1

What is the total number of electron domains around the central atom for a molecule having a square planar molecular geometry,such as XeBr4?

Accepted Answer

A)  2
B)  3
C)  4
D)  5
E)  6

Question 2

Indicate the type of hybrid orbitals used by the central atom in SF6.

Accepted Answer

A)  sp
B)  sp2
C)  sp3
D)  sp3d
E)  sp3d2

Question 3

A molecule which contains polar bonds will always have a dipole moment.

Accepted Answer

A) True 
 B)False

Question 4

Which one of the following molecules has a zero dipole moment?

Accepted Answer

A)  CO
B)  CH2Cl2
C)  SO3
D)  SO2
E)  NH3

Question 5

What is the total number of electron domains around the central atom for a molecule having a square pyramidal molecular geometry,such as ClF5?

Accepted Answer

A)  5
B)  2
C)  3
D)  4
E)  6

Question 6

Which is the most reasonable prediction for the H-O-H bond angle in H2O?

Accepted Answer

A)  90°
B)  109.5°
C)  120°
D)  107°
E)  105°

Question 7

The PCl5 molecule has

Accepted Answer

A)  nonpolar bonds,and is a nonpolar molecule.
B)  nonpolar bonds,but is a polar molecule.
C)  polar bonds,and is a polar molecule.
D)  polar bonds,but is a nonpolar molecule.

Question 8

According to molecular orbital (MO) theory,the twelve valence electrons in the O2 molecule are distributed as follows:

Accepted Answer

A)  12 in bonding MOs,0 in antibonding MOs.
B)  10 in bonding MOs,2 in antibonding MOs.
C)  9 in bonding MOs,3 in antibonding MOs.
D)  8 in bonding MOs,4 in antibonding MOs.
E)  7 in bonding MOs,5 in antibonding MOs.

Question 9

Use the VSEPR model to predict the molecular geometry of CO32−.

Accepted Answer

Question 10

The number of lone pairs on the central atom is used to determine the ____________.

Accepted Answer

The answer of The number of lone pairs on the...

Question 11

What is the total number of electron domains around the central atom for a molecule having a trigonal pyramidal molecular geometry,such as NH3?

Accepted Answer

A)  5
B)  2
C)  3
D)  4
E)  6

Question 12

Which is true concerning the molecular geometry of SF6?

Accepted Answer

A)  The predicted F-S-F bond angle is 60°.
B)  The predicted F-S-F bond angle is 90°.
C)  The predicted F-S-F bond angles are 90° and 120°.
D)  The predicted F-S-F bond angles are 90° and 180°.
E)  The predicted F-S-F bond angles are 60°,120°,and 180°.

Question 13

How many π bonds are there in one molecule of acrylonitrile (shown below) ?

Accepted Answer

A)  1
B)  2
C)  3
D)  5
E)  9

Question 14

What is the number of lone electron pairs on the central atom of a molecule having a linear molecular geometry,such as CO2?

Accepted Answer

A)  1
B)  2
C)  3
D)  0
E)  4

Question 15

Which molecular formula corresponds to a structural formula with carbon atoms having hybridizations of sp,sp2,and sp3?

Accepted Answer

A)  C3H6
B)  C4H4
C)  C4H6
D)  C5H6
E)  C5H8

Question 16

According to the VSEPR model,what is the predicted electron-domain geometry around the central iodine atom in the ion lF2- ?

Accepted Answer

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

Question 17

Consider the species N2-,N2,and N2+.Which of these species will be paramagnetic?

Accepted Answer

A)  N2 and N2-
B)  N2+ and N2
C)  N2+ and N2-
D)  N2-,N2,and N2+
E)  None is paramagnetic.

Question 18

What is the molecular geometry of NO2- as predicted by the VSEPR model?

Accepted Answer

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

Question 19

A molecule with the formula AB4 and a tetrahedral 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 orbitals

Question 20

According to the VSEPR model,a molecule with the general formula AB3 with no lone pairs on the central atom will have a ______ molecular shape.

Accepted Answer

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

Exam 9: Chemical Bonding Ii Molecular Geometry and Bonding Theories

Use the VSEPR model to predict the molecular geometry of CO32−.

Correct AnswerverifiedShow Answer

What is the molecular geometry of NO2- as predicted by the VSEPR model?

Correct AnswerverifiedShow Answer

What is the total number of electron domains around the central atom for a molecule having a square planar molecular geometry,such as XeBr4?

Correct AnswerverifiedShow Answer

Which is true concerning the molecular geometry of SF6?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The number of lone pairs on the central atom is used to determine the ____________.

Correct AnswerverifiedShow Answer

Which is the most reasonable prediction for the H-O-H bond angle in H2O?

Correct AnswerverifiedShow Answer

Which one of the following molecules has a zero dipole moment?

Correct AnswerverifiedShow Answer

What is the total number of electron domains around the central atom for a molecule having a square pyramidal molecular geometry,such as ClF5?

Correct AnswerverifiedShow Answer

What is the number of lone electron pairs on the central atom of a molecule having a linear molecular geometry,such as CO2?

Correct AnswerverifiedShow Answer

According to the VSEPR model,what is the predicted electron-domain geometry around the central iodine atom in the ion lF2- ?

Correct AnswerverifiedShow Answer

A molecule which contains polar bonds will always have a dipole moment.

Correct AnswerverifiedShow Answer

According to molecular orbital (MO) theory,the twelve valence electrons in the O2 molecule are distributed as follows:

Correct AnswerverifiedShow Answer

What is the total number of electron domains around the central atom for a molecule having a trigonal pyramidal molecular geometry,such as NH3?

Correct AnswerverifiedShow Answer

Consider the species N2-,N2,and N2+.Which of these species will be paramagnetic?

Correct AnswerverifiedShow Answer

According to the VSEPR model,a molecule with the general formula AB3 with no lone pairs on the central atom will have a ______ molecular shape.

Correct AnswerverifiedShow Answer

The PCl5 molecule has

Correct AnswerverifiedShow Answer

Indicate the type of hybrid orbitals used by the central atom in SF6.

Correct AnswerverifiedShow Answer

How many π bonds are there in one molecule of acrylonitrile (shown below) ?

Correct AnswerverifiedShow Answer

Which molecular formula corresponds to a structural formula with carbon atoms having hybridizations of sp,sp2,and sp3?

Correct AnswerverifiedShow Answer

Use the VSEPR model to predict the molecular geometry of CO₃²⁻.

Correct Answer
verified

What is the molecular geometry of NO₂^- as predicted by the VSEPR model?

Correct Answer
verified

What is the total number of electron domains around the central atom for a molecule having a square planar molecular geometry,such as XeBr₄?

Correct Answer
verified

Which is true concerning the molecular geometry of SF₆?

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Which is the most reasonable prediction for the H-O-H bond angle in H₂O?

Correct Answer
verified

Correct Answer
verified

What is the total number of electron domains around the central atom for a molecule having a square pyramidal molecular geometry,such as ClF₅?

Correct Answer
verified

What is the number of lone electron pairs on the central atom of a molecule having a linear molecular geometry,such as CO₂?

Correct Answer
verified

According to the VSEPR model,what is the predicted electron-domain geometry around the central iodine atom in the ion lF₂^- ?

Correct Answer
verified

Correct Answer
verified

According to molecular orbital (MO) theory,the twelve valence electrons in the O₂ molecule are distributed as follows:

Correct Answer
verified

What is the total number of electron domains around the central atom for a molecule having a trigonal pyramidal molecular geometry,such as NH₃?

Correct Answer
verified

Consider the species N₂^-,N₂,and N₂⁺.Which of these species will be paramagnetic?

Correct Answer
verified

According to the VSEPR model,a molecule with the general formula AB₃ with no lone pairs on the central atom will have a ______ molecular shape.

Correct Answer
verified

The PCl₅ molecule has

Correct Answer
verified

Indicate the type of hybrid orbitals used by the central atom in SF₆.

Correct Answer
verified

Correct Answer
verified

Which molecular formula corresponds to a structural formula with carbon atoms having hybridizations of sp,sp²,and sp³?

Correct Answer
verified