Question 1

The dipole moment of BrF is 1.29 D,and its bond length is 178 pm.What is the percent ionic character of the Br-F bond?

Accepted Answer

A) 3.9% 
B) 8.5% 
C) 15% 
D) 33% 
A) 3.9% 
B) 8.5% 
C) 15% 
D) 33% C

Question 2

Which of the following best describes CO2? It has a molecular geometry that is

Accepted Answer

A) linear molecular shape with no lone pairs on the I atom. 
B) linear molecular shape with lone pairs on the I atom. 
C) non-linear molecular shape with no lone pairs on the I atom. 
D) non-linear molecular shape with lone pairs on the I atom. 
A) linear molecular shape with no lone pairs on the I atom. 
B) linear molecular shape with lone pairs on the I atom. 
C) non-linear molecular shape with no lone pairs on the I atom. 
D) non-linear molecular shape with lone pairs on the I atom. A

Question 3

What is the geometry around the central atom in the following molecular model of NH2-?

Accepted Answer

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

Question 4

Based on molecular orbital theory,in order to weaken the N-N bond in N2,electrons should be

Accepted Answer

A) added. 
B) removed. 
C) either added or removed. 
D) neither added nor removed. 
A) added. 
B) removed. 
C) either added or removed. 
D) neither added nor removed.

Question 5

Molecular orbitals extending over more than two atoms provide an explanation for

Accepted Answer

A) coordinate covalent bonding. 
B) ionic bonding. 
C) paramagnetism. 
D) resonance. 
A) coordinate covalent bonding. 
B) ionic bonding. 
C) paramagnetism. 
D) resonance.

Question 6

What is the molecular geometry of ICl4-?

Accepted Answer

A) seesaw 
B) square planar 
C) square pyramidal 
D) tetrahedral 
A) seesaw 
B) square planar 
C) square pyramidal 
D) tetrahedral

Question 7

Of BrF3 and PF3,the one with the smaller bond angles is ________.

Accepted Answer

Question 8

What is the geometry around the central atom in the following molecular model of PF5?

Accepted Answer

A) trigonal bipyramidal 
B) seesaw 
C) T-shaped 
D) linear 
A) trigonal bipyramidal 
B) seesaw 
C) T-shaped 
D) linear

Question 9

Predict whether removing two electrons from F2 will create an ion that is diamagnetic or paramagnetic and have an F-F that is stronger or weaker than the bond in F2.

Accepted Answer

paramagnet

Question 10

What is the geometry around the central atom in the following molecular model of CCl4?

Accepted Answer

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

Question 11

AgCl is found to have 78.1% ionic character,and its gas phase dipole moment is 11.5 D.What is the distance between the Ag and Cl atoms in gaseous AgCl?

Accepted Answer

A) 9.19 × 10-10 pm 
B) 14.7 pm 
C) 307 pm 
D) 903 pm 
A) 9.19 × 10-10 pm 
B) 14.7 pm 
C) 307 pm 
D) 903 pm

Question 12

Which of the following compounds exhibits only dispersion and dipole-dipole intermolecular interactions?

Accepted Answer

A) N2 
B) HBr  
C) CO2 
D) H2O  
A) N2 
B) HBr  
C) CO2 
D) H2O

Question 13

Which molecular orbital resembles a d-orbital?

Accepted Answer

A) σ 
B) σ* 
C) π 
D) π* 
A) σ 
B) σ* 
C) π 
D) π*

Question 14

Which of the following compounds exhibits hydrogen bonding?

Accepted Answer

A) CH3F 
B) CH3OCH3 
C) (CH3)3N 
D) CH3CH2OH 
A) CH3F 
B) CH3OCH3 
C) (CH3)3N 
D) CH3CH2OH

Question 15

Which covalent bond is the most polar?

Accepted Answer

A) H-I 
B) H-F 
C) H-Cl 
D) H-Br 
A) H-I 
B) H-F 
C) H-Cl 
D) H-Br

Question 16

The Br-Cl bond has 5.05% ionic character and a dipole moment of 0.518 D.What is the distance between atoms in BrCl?

Accepted Answer

The answer of The Br-Cl bond has 5.05% ionic character...

Question 17

The VSEPR model predicts the O-S-O bond angle in SO2 to be

Accepted Answer

A) 90°. 
B) 109.5°. 
C) less than 120° but greater than 109.5°. 
D) 120°. 
A) 90°. 
B) 109.5°. 
C) less than 120° but greater than 109.5°. 
D) 120°.

Question 18

According to molecular orbital theory,is the highest energy orbital that contains an electron antibonding or bonding in O22-?

Accepted Answer

Question 19

What are the bond angles in the following molecular model of NH4+?

Accepted Answer

A) less than 109.5° 
B) 109.5° 
C) less than 120° but greater than 109.5° 
D) 120° 
A) less than 109.5° 
B) 109.5° 
C) less than 120° but greater than 109.5° 
D) 120°

Question 20

What is the geometry around the central atom in the following molecular model of NO3-?

Accepted Answer

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

Exam 8: Covalent Compounds: Bonding Theories and Molecular Structure

The dipole moment of BrF is 1.29 D,and its bond length is 178 pm.What is the percent ionic character of the Br-F bond?

Which of the following best describes CO2? It has a molecular geometry that is

What is the geometry around the central atom in the following molecular model of NH2-?

Based on molecular orbital theory,in order to weaken the N-N bond in N2,electrons should be

Molecular orbitals extending over more than two atoms provide an explanation for

What is the molecular geometry of ICl4-?

Of BrF3 and PF3,the one with the smaller bond angles is ________.

What is the geometry around the central atom in the following molecular model of PF5?

Predict whether removing two electrons from F2 will create an ion that is diamagnetic or paramagnetic and have an F-F that is stronger or weaker than the bond in F2.

What is the geometry around the central atom in the following molecular model of CCl4?

AgCl is found to have 78.1% ionic character,and its gas phase dipole moment is 11.5 D.What is the distance between the Ag and Cl atoms in gaseous AgCl?

Which of the following compounds exhibits only dispersion and dipole-dipole intermolecular interactions?

Which molecular orbital resembles a d-orbital?

Which of the following compounds exhibits hydrogen bonding?

Which covalent bond is the most polar?

The Br-Cl bond has 5.05% ionic character and a dipole moment of 0.518 D.What is the distance between atoms in BrCl?

The VSEPR model predicts the O-S-O bond angle in SO2 to be

According to molecular orbital theory,is the highest energy orbital that contains an electron antibonding or bonding in O22-?

What are the bond angles in the following molecular model of NH4+?

What is the geometry around the central atom in the following molecular model of NO3-?

Chemical Tools: Experimentation and Measurement

Atoms, molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids, solids, and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

Which of the following best describes CO₂? It has a molecular geometry that is

What is the geometry around the central atom in the following molecular model of NH₂^-?

Based on molecular orbital theory,in order to weaken the N-N bond in N₂,electrons should be

What is the molecular geometry of ICl₄^-?

Of BrF₃and PF_3,the one with the smaller bond angles is ________.

What is the geometry around the central atom in the following molecular model of PF₅?

Predict whether removing two electrons from F₂ will create an ion that is diamagnetic or paramagnetic and have an F-F that is stronger or weaker than the bond in F₂.

What is the geometry around the central atom in the following molecular model of CCl₄?

The VSEPR model predicts the O-S-O bond angle in SO₂ to be

According to molecular orbital theory,is the highest energy orbital that contains an electron antibonding or bonding in O₂^2-?

What are the bond angles in the following molecular model of NH₄⁺?

What is the geometry around the central atom in the following molecular model of NO₃^-?