Question 1

Which statement is false concerning ionic bonds and compounds?

Accepted Answer

A)  Ionic bonds are a result of electrostatic forces. 
B)  Ionic bonds usually occur between elements with high and low electron affinities. 
C)  Elements of an ionic compound usually carry the same charge. 
D)  Lewis dot symbols are useful for tracking electrons. 
A)  Ionic bonds are a result of electrostatic forces. 
B)  Ionic bonds usually occur between elements with high and low electron affinities. 
C)  Elements of an ionic compound usually carry the same charge. 
D)  Lewis dot symbols are useful for tracking electrons.

Question 2

Which of these compounds is most likely to be covalent?

Accepted Answer

A)  Rb2S 
B)  SrCl2 
C)  CS2 
D)  CaO 
E)  MgI2 
A)  Rb2S 
B)  SrCl2 
C)  CS2 
D)  CaO 
E)  MgI2

Question 3

Which of these Lewis structures is incorrect?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 4

The Lewis dot symbol consists of the symbol for the element surrounded by dot(s). What does the dot or dots represent?

Accepted Answer

A)  Electron configuration 
B)  Valence electrons 
C)  Atomic number 
D)  Atomic mass 
E)  Core electrons 
A)  Electron configuration 
B)  Valence electrons 
C)  Atomic number 
D)  Atomic mass 
E)  Core electrons

Question 5

Which of these compounds is most likely to be covalent?

Accepted Answer

A)  KF 
B)  CaCl2 
C)  SF4 
D)  Al2O3 
E)  CaSO4 
A)  KF 
B)  CaCl2 
C)  SF4 
D)  Al2O3 
E)  CaSO4

Question 6

In Ba(CN)2, the bonding is

Accepted Answer

A)  essentially ionic. 
B)  essentially covalent. 
C)  both ionic and covalent. 
D)  neither ionic nor covalent. 
A)  essentially ionic. 
B)  essentially covalent. 
C)  both ionic and covalent. 
D)  neither ionic nor covalent.

Question 7

How many lone pairs of electrons are on the central atom in the Lewis structure for NH3?

Accepted Answer

Question 8

Which of these molecules has an atom with an expanded octet?

Accepted Answer

A)  HCl 
B)  AsCl5 
C)  ICl 
D)  NCl3 
E)  Cl2 
A)  HCl 
B)  AsCl5 
C)  ICl 
D)  NCl3 
E)  Cl2

Question 9

Which of the following contains ionic bonding?

Accepted Answer

A)  CO 
B)  SrF2 
C)  Al 
D)  OCl2 
E)  HCl 
A)  CO 
B)  SrF2 
C)  Al 
D)  OCl2 
E)  HCl

Question 10

Which one of the following compounds is most likely to be ionic?

Accepted Answer

A)  HNF2 
B)  H2CO 
C)  N2H4 
D)  CaCl2 
E)  ICl 
A)  HNF2 
B)  H2CO 
C)  N2H4 
D)  CaCl2 
E)  ICl

Question 11

Which molecule has the largest dipole moment?

Accepted Answer

A)  HF 
B)  HI 
C)  HBr 
D)  HCl 
E)  All of the molecules have the same dipole moment. 
A)  HF 
B)  HI 
C)  HBr 
D)  HCl 
E)  All of the molecules have the same dipole moment.

Question 12

Which of these compounds is most likely to be ionic?

Accepted Answer

A)  NCl3 
B)  BaCl2 
C)  CO 
D)  SO2 
E)  SF4 
A)  NCl3 
B)  BaCl2 
C)  CO 
D)  SO2 
E)  SF4

Question 13

What types of elements undergo covalent bonding?

Accepted Answer

A)  a metal and a noble gas 
B)  a nonmetal and a metal 
C)  two nonmetals 
D)  two Group 1A elements 
E)  an actinide 
A)  a metal and a noble gas 
B)  a nonmetal and a metal 
C)  two nonmetals 
D)  two Group 1A elements 
E)  an actinide

Question 14

Which molecule has a Lewis structure that does not obey the octet rule?

Accepted Answer

A)  N2O 
B)  CS2 
C)  PH3 
D)  CCl4 
E)  NO2 
A)  N2O 
B)  CS2 
C)  PH3 
D)  CCl4 
E)  NO2

Question 15

Ionic compounds tend to form between metals and nonmetals when electrons are transferred from an element with high ionization energy (metal) to an element with a low electron affinity (nonmetal).

Accepted Answer

A) True 
 B)False

Question 16

How many dots does the Lewis dot symbol for chlorine have around it?

Accepted Answer

A)  1 
B)  2 
C)  5 
D)  7 
E)  17 
A)  1 
B)  2 
C)  5 
D)  7 
E)  17

Question 17

Which of these choices is the best Lewis structure for ozone, O3?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 18

All of the following molecules contain only single bonds except

Accepted Answer

A)  H2O2. 
B)  Cl2. 
C)  CH4. 
D)  H2O. 
E)  SO2. 
A)  H2O2. 
B)  Cl2. 
C)  CH4. 
D)  H2O. 
E)  SO2.

Question 19

Which of these pairs of elements would be most likely to form an ionic compound?

Accepted Answer

A)  Cl and I 
B)  Al and K 
C)  Cl and Mg 
D)  C and S 
E)  Al and Mg 
A)  Cl and I 
B)  Al and K 
C)  Cl and Mg 
D)  C and S 
E)  Al and Mg

Question 20

In which one of the following species is the central atom (the first atom in the formula) likely to violate the octet rule?

Accepted Answer

A)  BF4- 
B)  XeO3 
C)  SiCl4 
D)  NH3 
E)  CH2Cl2 
A)  BF4- 
B)  XeO3 
C)  SiCl4 
D)  NH3 
E)  CH2Cl2

Exam 8: Chemical Bonding I: Basic Concepts

Which statement is false concerning ionic bonds and compounds?

Which of these compounds is most likely to be covalent?

Which of these Lewis structures is incorrect?

The Lewis dot symbol consists of the symbol for the element surrounded by dot(s). What does the dot or dots represent?

Which of these compounds is most likely to be covalent?

In Ba(CN)2, the bonding is

How many lone pairs of electrons are on the central atom in the Lewis structure for NH3?

Which of these molecules has an atom with an expanded octet?

Which of the following contains ionic bonding?

Which one of the following compounds is most likely to be ionic?

Which molecule has the largest dipole moment?

Which of these compounds is most likely to be ionic?

What types of elements undergo covalent bonding?

Which molecule has a Lewis structure that does not obey the octet rule?

Ionic compounds tend to form between metals and nonmetals when electrons are transferred from an element with high ionization energy (metal) to an element with a low electron affinity (nonmetal).

How many dots does the Lewis dot symbol for chlorine have around it?

Which of these choices is the best Lewis structure for ozone, O3?

All of the following molecules contain only single bonds except

Which of these pairs of elements would be most likely to form an ionic compound?

In which one of the following species is the central atom (the first atom in the formula) likely to violate the octet rule?

Chemistry: the Central Science

Atoms, Molecules, and Ions

Stoichiometry: Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding II: Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy, Free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

In Ba(CN)₂, the bonding is

How many lone pairs of electrons are on the central atom in the Lewis structure for NH₃?

Which of these choices is the best Lewis structure for ozone, O₃?