Question 1

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 2

Which of these elements is most likely to exhibit an expanded octet in its compounds?

Accepted Answer

A) O 
B) S 
C) Na 
D) C 
E) N 
A) O 
B) S 
C) Na 
D) C 
E) N

Question 3

Hydrazine,N2H4,is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure.

Accepted Answer

A)    
B)    
C)    
D)    
E) None of the choices is correct. 
A)    
B)    
C)    
D)    
E) None of the choices is correct.

Question 4

Lewis theorized the octet rule to describe chemical bonding where atoms lose,gain,or share electrons in order to achieve a noble gas configuration.

Accepted Answer

A) True 
 B)False

Question 5

Select the element whose Lewis symbol is correct.

Accepted Answer

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

Question 6

Which pair of Lewis structures is not a pair of resonance structures?

Accepted Answer

A)    
B)    
C)    
D) All of these pairs are resonance structures of the same species. 
E) None of these pairs is resonance structures of the same species. 
A)    
B)    
C)    
D) All of these pairs are resonance structures of the same species. 
E) None of these pairs is resonance structures of the same species.

Question 7

If an element is bonded to 4 other atoms and has a formal charge of +1,what group must the element be in?

Accepted Answer

A) 3A 
B) 4A 
C) 5A 
D) 6A 
E) 7A 
A) 3A 
B) 4A 
C) 5A 
D) 6A 
E) 7A

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

The Lewis dot symbol for the calcium ion is

Accepted Answer

A)      2+ 
B)    
C)      2+ 
D) Ca2+ 
E) Ca 
A)      2+ 
B)    
C)      2+ 
D) Ca2+ 
E) Ca

Question 10

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

Accepted Answer

A) Electron configuration 
B) Valence electrons 
C) Atomic number 
D) Atomic mass 
E) Nucleus and core electrons 
A) Electron configuration 
B) Valence electrons 
C) Atomic number 
D) Atomic mass 
E) Nucleus and core electrons

Question 11

_____________________ of atoms interact to form compounds.

Accepted Answer

The answer of _____________________ of atoms interact to form compounds....

Question 12

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 13

Which of these substances will display an incomplete octet in its Lewis structure?

Accepted Answer

A) CO2 
B) Cl2 
C) ICl 
D) NO 
E) SO2 
A) CO2 
B) Cl2 
C) ICl 
D) NO 
E) SO2

Question 14

Ignoring resonance,the formal charge on the nitrogen atom in the nitrate ion is

Accepted Answer

A) +2. 
B) +1. 
C) 0. 
D) -1. 
E) -2. 
A) +2. 
B) +1. 
C) 0. 
D) -1. 
E) -2.

Question 15

Which of the following contains covalent bonds?

Accepted Answer

A) BaO 
B) IBr 
C) Mg 
D) LiBr 
E) Cu 
A) BaO 
B) IBr 
C) Mg 
D) LiBr 
E) Cu

Question 16

How many lone pairs of electrons need to be added to complete this Lewis structure?

Accepted Answer

A) 5 
B) 8 
C) 6 
D) 1 
E) 16 
A) 5 
B) 8 
C) 6 
D) 1 
E) 16

Question 17

Which of these Lewis structures is incorrect?

Accepted Answer

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

Question 18

A(n)_____________ is a representation of covalent bonding in which shared electron pairs are shown either as dashes or as pairs of dots between two atoms and unshared electrons are shown as dots around the individual atoms.

Accepted Answer

The answer of A(n)_____________ is a representation of covalent bonding...

Question 19

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 20

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

Exam 8: Chemical Bonding I Basic Concepts

Which of these compounds is most likely to be ionic?

Which of these elements is most likely to exhibit an expanded octet in its compounds?

Hydrazine,N2H4,is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure.

Lewis theorized the octet rule to describe chemical bonding where atoms lose,gain,or share electrons in order to achieve a noble gas configuration.

Select the element whose Lewis symbol is correct.

Which pair of Lewis structures is not a pair of resonance structures?

If an element is bonded to 4 other atoms and has a formal charge of +1,what group must the element be in?

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

The Lewis dot symbol for the calcium ion is

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

_____________________ of atoms interact to form compounds.

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).

Which of these substances will display an incomplete octet in its Lewis structure?

Ignoring resonance,the formal charge on the nitrogen atom in the nitrate ion is

Which of the following contains covalent bonds?

How many lone pairs of electrons need to be added to complete this Lewis structure?

Which of these Lewis structures is incorrect?

A(n)_____________ is a representation of covalent bonding in which shared electron pairs are shown either as dashes or as pairs of dots between two atoms and unshared electrons are shown as dots around the individual atoms.

In Ba(CN)2,the bonding is

Which molecule has a Lewis structure that does not obey 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

Hydrazine,N₂H₄,is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure.

In Ba(CN)₂,the bonding is