Question 1

Select the compound with the lowest (i.e., least negative) lattice energy.

Accepted Answer

A)  CsBr(s) 
B)  NaCl(s) 
C)  SrO(s) 
D)  CaO(s) 
E)  KBr(s) 
A)  CsBr(s) 
B)  NaCl(s) 
C)  SrO(s) 
D)  CaO(s) 
E)  KBr(s)

Question 2

Select the correct Lewis structure for NOCl, a reactive material used as an ionizing solvent.

Accepted Answer

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

Question 3

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

Accepted Answer

A)  1 
B)  2 
C)  0 
D)  3 
E)  12 
A)  1 
B)  2 
C)  0 
D)  3 
E)  12

Question 4

A double bond cannot exist between a carbon atom and an oxygen atom.

Accepted Answer

A) True 
 B)False

Question 5

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 6

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

Accepted Answer

A)  4 
B)  2 
C)  6 
D)  3 
E)  8 
A)  4 
B)  2 
C)  6 
D)  3 
E)  8

Question 7

A triple bond arises when two atoms share ________ pairs of electrons.

Accepted Answer

The answer of A triple bond arises when two atoms...

Question 8

A triple bond cannot exist between a carbon atom and a hydrogen atom.

Accepted Answer

A) True 
 B)False

Question 9

Only valence electrons are shown in the Lewis structure held together by covalent bonds.

Accepted Answer

A) True 
 B)False

Question 10

Which of these compounds is most likely to be covalent?

Accepted Answer

A)  CsOH 
B)  NF3 
C)  Sr(NO3)2 
D)  CaO 
E)  LiF 
A)  CsOH 
B)  NF3 
C)  Sr(NO3)2 
D)  CaO 
E)  LiF

Question 11

What types of elements undergo ionic bonding?

Accepted Answer

A)  two metals 
B)  a nonmetal and a metal 
C)  two nonmetals 
D)  two Group 1A elements 
E)  two noble gases 
A)  two metals 
B)  a nonmetal and a metal 
C)  two nonmetals 
D)  two Group 1A elements 
E)  two noble gases

Question 12

Which of these compounds is most likely to be ionic?

Accepted Answer

A)  KF 
B)  CCl4 
C)  CS2 
D)  CO2 
E)  ICl 
A)  KF 
B)  CCl4 
C)  CS2 
D)  CO2 
E)  ICl

Question 13

Describe in brief how electronegativity values can be used to predict the percent ionic character of a bond between two atoms.

Accepted Answer

Take the electronegativity difference (Δ

Question 14

Which of these ionic solids would have the largest lattice energy?

Accepted Answer

A)  NaCl 
B)  NaF 
C)  CaBr2 
D)  CsI 
E)  CaCl2 
A)  NaCl 
B)  NaF 
C)  CaBr2 
D)  CsI 
E)  CaCl2

Question 15

The Lewis structure for CS2 is:

Accepted Answer

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

Question 16

Select the compound with the highest (i.e., most negative) lattice energy.

Accepted Answer

A)  CaS(s) 
B)  BaO(s) 
C)  NaI(s) 
D)  LiBr(s) 
E)  MgO(s) 
A)  CaS(s) 
B)  BaO(s) 
C)  NaI(s) 
D)  LiBr(s) 
E)  MgO(s)

Question 17

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 18

What is the electrostatic attraction called that holds oppositely charged ions together in a compound?

Accepted Answer

The answer of What is the electrostatic attraction called that...

Question 19

The formal charge on Cl in the structure shown for the perchlorate 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 20

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...

Exam 8: Chemical Bonding I: Basic Concepts

Select the compound with the lowest (i.e., least negative) lattice energy.

Select the correct Lewis structure for NOCl, a reactive material used as an ionizing solvent.

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

A double bond cannot exist between a carbon atom and an oxygen atom.

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 oxygen have around it?

A triple bond arises when two atoms share ________ pairs of electrons.

A triple bond cannot exist between a carbon atom and a hydrogen atom.

Only valence electrons are shown in the Lewis structure held together by covalent bonds.

Which of these compounds is most likely to be covalent?

What types of elements undergo ionic bonding?

Which of these compounds is most likely to be ionic?

Describe in brief how electronegativity values can be used to predict the percent ionic character of a bond between two atoms.

Which of these ionic solids would have the largest lattice energy?

The Lewis structure for CS2 is:

Select the compound with the highest (i.e., most negative) lattice energy.

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

What is the electrostatic attraction called that holds oppositely charged ions together in a compound?

The formal charge on Cl in the structure shown for the perchlorate ion is ________.

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.

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

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The Lewis structure for CS₂ is: