Question 1

Which of the following would have to lose two electrons in order to achieve a noble gas electron configuration ?

Accepted Answer

A)  O, Se 
B)  Sr, O, Se 
C)  Sr 
D)  Na 
E)  Br 
A)  O, Se 
B)  Sr, O, Se 
C)  Sr 
D)  Na 
E)  Br

Question 2

In the Lewis symbol for a fluorine atom, there are paired and unpaired electrons.

Accepted Answer

A)  4,1 
B)  4, 2 
C)  2, 5 
D)  0, 5 
E)  6, 1 
A)  4,1 
B)  4, 2 
C)  2, 5 
D)  0, 5 
E)  6, 1

Question 3

The Lewis structure of the CO32- ion is .

Accepted Answer

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

Question 4

A valid Lewis structure of _ _ cannot be drawn without violating the octet rule.

Accepted Answer

A)  ClF3  
B)  SO3  
C)  CCl4  
D)  CO2  
E)  PCl3 
A)  ClF3  
B)  SO3  
C)  CCl4  
D)  CO2  
E)  PCl3

Question 5

Of the molecules below, the bond in is the most polar.

Accepted Answer

A)  HF 
B)  HI 
C)  H2  
D)  HCl 
E)  HBr 
A)  HF 
B)  HI 
C)  H2  
D)  HCl 
E)  HBr

Question 6

Of the following, cannot accommodate more than an octet of electrons.

Accepted Answer

A)  O 
B)  As 
C)  S 
D)  I 
E)  P 
A)  O 
B)  As 
C)  S 
D)  I 
E)  P

Question 7

Using the table of bond dissociation energies, the OH for the following gas- phase reaction is
KJ)

Accepted Answer

A)  - 291 
B)  - 57 
C)  2017 
D)  291 
E)  - 356 
A)  - 291 
B)  - 57 
C)  2017 
D)  291 
E)  - 356

Question 8

Of the possible bonds between carbon atoms (single, double, and triple), _.

Accepted Answer

A)  a double bond is longer than a triple bond 
B)  a single bond is stronger than a double bond 
C)  a triple bond is longer than a single bond 
D)  a double bond is stronger than a triple bond 
E)  a single bond is stronger than a triple bond 
A)  a double bond is longer than a triple bond 
B)  a single bond is stronger than a double bond 
C)  a triple bond is longer than a single bond 
D)  a double bond is stronger than a triple bond 
E)  a single bond is stronger than a triple bond

Question 9

Of the atoms below, is the most electronegative.

Accepted Answer

A)  O 
B)  Cl 
C)  Br 
D)  F 
E)  N 
A)  O 
B)  Cl 
C)  Br 
D)  F 
E)  N

Question 10

As the number of covalent bonds between two atoms increases, the distance between the atoms
And the strength of the bond between them _ _.

Accepted Answer

A)  increases, increases 
B)  decreases, decreases 
C)  increases, decreases 
D)  decreases, increases 
E)  is unpredictable 
A)  increases, increases 
B)  decreases, decreases 
C)  increases, decreases 
D)  decreases, increases 
E)  is unpredictable

Question 11

Of the bonds below, is the least polar.

Accepted Answer

A)  Na, S 
B)  P, S 
C)  Si, Cl 
D)  C, F 
E)  Na, Cl 
A)  Na, S 
B)  P, S 
C)  Si, Cl 
D)  C, F 
E)  Na, Cl

Question 12

As electronegativity difference increases, bond length will decrease.

Accepted Answer

A) True 
 B)False

Question 13

The electron configuration that corresponds to the Lewis symbol, :

Accepted Answer

The answer of The electron configuration that corresponds to the...

Question 14

The formal charge on sulfur in SO42- is , where the Lewis structure of the ion is:

Accepted Answer

A)  0 
B)  - 4 
C)  - 2 
D)  +4 
E)  +2 
A)  0 
B)  - 4 
C)  - 2 
D)  +4 
E)  +2

Question 15

The type of compound that is most likely to contain a covalent bond is _.

Accepted Answer

A)  one that is composed of only nonmetals 
B)  one that is composed of a metal from the far left of the periodic table and a nonmetal from the far right of the periodic table 
C)  held together by the electrostatic forces between oppositely charged ions 
D)  a solid metal 
E)  There is no general rule to predict covalency in bonds. 
A)  one that is composed of only nonmetals 
B)  one that is composed of a metal from the far left of the periodic table and a nonmetal from the far right of the periodic table 
C)  held together by the electrostatic forces between oppositely charged ions 
D)  a solid metal 
E)  There is no general rule to predict covalency in bonds.

Question 16

Which of the following would have to gain two electrons in order to achieve a noble gas electron configuration _ ?
O Sr Na Se Br

Accepted Answer

A)  Br 
B)  Sr, O, Se 
C)  Sr 
D)  O, Se 
E)  Na 
A)  Br 
B)  Sr, O, Se 
C)  Sr 
D)  O, Se 
E)  Na

Question 17

Of the bonds C- N, C=N, and C÷N, the C- N bond is .

Accepted Answer

A)  strongest/shortest 
B)  weakest/longest 
C)  weakest/shortest 
D)  strongest/longest 
E)  intermediate in both strength and length 
A)  strongest/shortest 
B)  weakest/longest 
C)  weakest/shortest 
D)  strongest/longest 
E)  intermediate in both strength and length

Question 18

Using the table of average bond energies below, the OH for the reaction is kJ.

Accepted Answer

A)  - 735 
B)  - 116 
C)  - 276 
D)  +735 
E)  +276 
A)  - 735 
B)  - 116 
C)  - 276 
D)  +735 
E)  +276

Question 19

The bond length in an HI molecule is 1.61 Å and the measured dipole moment is 0.44 D. What is the magnitude (in units of e) of the negative charge on I in HI?
(1 debye = 3.34 × 10- 34 coulomb- meters; ; e=1.6 × 10- 19 coulombs)

Accepted Answer

A)  1.6 × 10- 19 
B)  1 
C)  0.057 
D)  0.22 
E)  9.1 
A)  1.6 × 10- 19 
B)  1 
C)  0.057 
D)  0.22 
E)  9.1

Question 20

For resonance forms of a molecule or ion, .

Accepted Answer

A)  there cannot be more than two resonance structures for a given species 
B)  the observed structure is an average of the resonance forms 
C)  all the resonance structures are observed in various proportions 
D)  the same atoms need not be bonded to each other in all resonance forms 
E)  one always corresponds to the observed structure 
A)  there cannot be more than two resonance structures for a given species 
B)  the observed structure is an average of the resonance forms 
C)  all the resonance structures are observed in various proportions 
D)  the same atoms need not be bonded to each other in all resonance forms 
E)  one always corresponds to the observed structure

Exam 8: Basic Concepts of Chemical Bonding

Which of the following would have to lose two electrons in order to achieve a noble gas electron configuration ?

In the Lewis symbol for a fluorine atom, there are paired and unpaired electrons.

The Lewis structure of the CO32- ion is .

A valid Lewis structure of _ _ cannot be drawn without violating the octet rule.

Of the molecules below, the bond in is the most polar.

Of the following, cannot accommodate more than an octet of electrons.

Using the table of bond dissociation energies, the OH for the following gas- phase reaction is KJ)

Of the possible bonds between carbon atoms (single, double, and triple), _.

Of the atoms below, is the most electronegative.

As the number of covalent bonds between two atoms increases, the distance between the atoms And the strength of the bond between them _ _.

Of the bonds below, is the least polar.

As electronegativity difference increases, bond length will decrease.

The electron configuration that corresponds to the Lewis symbol, :

The formal charge on sulfur in SO42- is , where the Lewis structure of the ion is:

The type of compound that is most likely to contain a covalent bond is _.

Which of the following would have to gain two electrons in order to achieve a noble gas electron configuration _ ? O Sr Na Se Br

Of the bonds C- N, C=N, and C÷N, the C- N bond is .

Using the table of average bond energies below, the OH for the reaction is kJ.

The bond length in an HI molecule is 1.61 Å and the measured dipole moment is 0.44 D. What is the magnitude (in units of e) of the negative charge on I in HI? (1 debye = 3.34 × 10- 34 coulomb- meters; ; e=1.6 × 10- 19 coulombs)

For resonance forms of a molecule or ion, .

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Electronic Structure of Atoms

Periodic Properties of the Elements

Gases

Intermolecular Forces, Liquids, and Solids

Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Chemistry of Coordination Compounds

The Chemistry of Life: Organic and Biological Chemistry

Filters

The Lewis structure of the CO₃²^-ion is .

The formal charge on sulfur in SO₄²^-is , where the Lewis structure of the ion is:

The bond length in an HI molecule is 1.61 Å and the measured dipole moment is 0.44 D. What is the magnitude (in units of e) of the negative charge on I in HI? (1 debye = 3.34 × 10^-³⁴coulomb- meters; ; e=1.6 × 10^-¹⁹coulombs)