Question 1

How does the geometrical structure of PF5 differ from that of IF5?

Accepted Answer

PF₅ is trigonal bipyr

Question 2

Use VSEPR theory to predict the molecular geometry of CO32-.

Accepted Answer

Question 3

In benzene (C6H6), what is the hybridization of each carbon atom?

Accepted Answer

Question 4

Indicate the number of $\pi$-bonds in C2H4.

Accepted Answer

The answer of Indicate the number of $\pi$-bonds in C2H4....

Question 5

The number of pi bonds in the oxalate ion (C2O42-)is

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 6

What is the hybridization of As in the AsF4- ion?

Accepted Answer

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

Question 7

According to the VSEPR theory, will the molecule PF5 will be polar or nonpolar?

Accepted Answer

Question 8

In which of the following would the bonding be strengthened with the addition of an electron to form the negative molecular ion?

Accepted Answer

A) N2 
B) O2 
C) F2 
D) all of these 
E) none of these 
A) N2 
B) O2 
C) F2 
D) all of these 
E) none of these

Question 9

Complete this sentence: 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. 
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 10

Indicate the type of hybrid orbitals used by the central atom in BrF3.

Accepted Answer

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

Question 11

Predict the geometry around the central atom in SO42-.

Accepted Answer

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

Question 12

Which of the following species have the same geometries?

Accepted Answer

A) NH2- and H2O 
B) NH2- and BeH2 
C) H2O and BeH2 
D) NH2-, H2O, and BeH2 
A) NH2- and H2O 
B) NH2- and BeH2 
C) H2O and BeH2 
D) NH2-, H2O, and BeH2

Question 13

Which of the following molecules should be polar?
a.CH3OH
b.H2O
c.CH3OCH3

Accepted Answer

All of the

Question 14

According to the VSEPR theory, the molecular geometry of the carbonate ion, CO32 -, is

Accepted Answer

A) square planar. 
B) tetrahedral. 
C) pyramidal. 
D) trigonal planar. 
E) octahedral. 
A) square planar. 
B) tetrahedral. 
C) pyramidal. 
D) trigonal planar. 
E) octahedral.

Question 15

According to VSEPR theory, which one of the following molecules should be nonlinear?

Accepted Answer

A) CO2 
B) C2H2 
C) SO2 
D) BeCl2 
E) KrF2 
A) CO2 
B) C2H2 
C) SO2 
D) BeCl2 
E) KrF2

Question 16

Give the number of lone pairs around the central atom and the geometry of the ion PCl4-.

Accepted Answer

A) 0 lone pairs, tetrahedral 
B) 1 lone pair, distorted tetrahedron (seesaw) 
C) 1 lone pair, square pyramidal 
D) 1 lone pair, tetrahedral 
E) 2 lone pairs, square planar 
A) 0 lone pairs, tetrahedral 
B) 1 lone pair, distorted tetrahedron (seesaw) 
C) 1 lone pair, square pyramidal 
D) 1 lone pair, tetrahedral 
E) 2 lone pairs, square planar

Question 17

According to VSEPR theory, which one of the following species has a tetrahedral geometry?

Accepted Answer

A) IF4+ 
B) IF4- 
C) PCl4+ 
D) PCl4- 
E) SeF4 
A) IF4+ 
B) IF4- 
C) PCl4+ 
D) PCl4- 
E) SeF4

Question 18

Using periodic trends, arrange the following molecules in order of increasing dipole moment: NH3, PH3, AsH3.

Accepted Answer

Question 19

In which of the following would the bonding be weakened with the addition of an electron to form the negative molecular ion?

Accepted Answer

A) B2 
B) C2 
C) N2 
D) all of these 
E) none of these 
A) B2 
B) C2 
C) N2 
D) all of these 
E) none of these

Question 20

A species with a bond order of 1/2 may be stable.

Accepted Answer

A) True 
 B)False

Exam 10: Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

How does the geometrical structure of PF5 differ from that of IF5?

Use VSEPR theory to predict the molecular geometry of CO32-.

In benzene (C6H6), what is the hybridization of each carbon atom?

Indicate the number of π\piπ -bonds in C2H4.

The number of pi bonds in the oxalate ion (C2O42-)is

What is the hybridization of As in the AsF4- ion?

According to the VSEPR theory, will the molecule PF5 will be polar or nonpolar?

In which of the following would the bonding be strengthened with the addition of an electron to form the negative molecular ion?

Complete this sentence: The PCl5 molecule has

Indicate the type of hybrid orbitals used by the central atom in BrF3.

Predict the geometry around the central atom in SO42-.

Which of the following species have the same geometries?

Which of the following molecules should be polar? a.CH3OH b.H2O c.CH3OCH3

According to the VSEPR theory, the molecular geometry of the carbonate ion, CO32 -, is

According to VSEPR theory, which one of the following molecules should be nonlinear?

Give the number of lone pairs around the central atom and the geometry of the ion PCl4-.

According to VSEPR theory, which one of the following species has a tetrahedral geometry?

Using periodic trends, arrange the following molecules in order of increasing dipole moment: NH3, PH3, AsH3.

In which of the following would the bonding be weakened with the addition of an electron to form the negative molecular ion?

A species with a bond order of 1/2 may be stable.

Chemistry: The Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solution

Gases

Thermo-Chemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Chemistry in the Atmosphere

Entropy, Free Energy, and Equilibrium

Electrochemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Nuclear Chemistry

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

How does the geometrical structure of PF₅ differ from that of IF₅?

Use VSEPR theory to predict the molecular geometry of CO₃^2-.

In benzene (C₆H₆), what is the hybridization of each carbon atom?

Indicate the number of $\pi$ -bonds in C₂H₄.

The number of pi bonds in the oxalate ion (C₂O₄^2-)is

What is the hybridization of As in the AsF₄^- ion?

According to the VSEPR theory, will the molecule PF₅ will be polar or nonpolar?

Complete this sentence: The PCl₅ molecule has

Indicate the type of hybrid orbitals used by the central atom in BrF₃.

Predict the geometry around the central atom in SO₄^2-.

Which of the following molecules should be polar? a.CH₃OH b.H₂O c.CH₃OCH₃

According to the VSEPR theory, the molecular geometry of the carbonate ion, CO₃^{2 -}, is

Give the number of lone pairs around the central atom and the geometry of the ion PCl₄^-.

Using periodic trends, arrange the following molecules in order of increasing dipole moment: NH₃, PH₃, AsH₃.