Question 1

Which of the following ionic compounds has the largest lattice energy (i.e. ,the lattice energy most favorable to a stable lattice)?

Accepted Answer

A) BaO 
B) BeO 
C) CsI 
D) NaBr 
E) BaS 
A) BaO 
B) BeO 
C) CsI 
D) NaBr 
E) BaS

Question 2

Which of the following molecules contains a double bond?

Accepted Answer

A) CO2 
B) NH3 
C) H2O 
D) all 
E) none 
A) CO2 
B) NH3 
C) H2O 
D) all 
E) none

Question 3

Given the following Lewis structure:  
-How many unshared pairs of electrons are present in this molecule?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 4

Which of the following species is best described by drawing resonance structures?

Accepted Answer

A) PH3 
B) NH4+ 
C) O3 
D) SO3 
E) HCN 
A) PH3 
B) NH4+ 
C) O3 
D) SO3 
E) HCN

Question 5

Consider the following molecules.
I.BFS1U1B13S1U1B0
II.CHBrS1U1B13S1U1B0 (C is the central atom)
III.BrS1U1B12S1U1B0
IV.XeClS1U1B12S1U1B0
V.CO
VI.SFS1U1B14S1U1B0
Select the molecule(s)that fit the given statement.
-These molecules have a trigonal bipyramidal electron pair arrangement.

Accepted Answer

A) II,IV,VI 
B) I,IV 
C) IV,VI 
D) VI only 
E) none of them 
A) II,IV,VI 
B) I,IV 
C) IV,VI 
D) VI only 
E) none of them

Question 6

For the elements Cs,F,and P,the order of increasing electronegativity is:

Accepted Answer

A) Cs < F < P 
B) Cs < P < F 
C) P < F < Cs 
D) F < Cs < P 
E) none of these 
A) Cs < F < P 
B) Cs < P < F 
C) P < F < Cs 
D) F < Cs < P 
E) none of these

Question 7

For each of the following compounds:
a)Draw the Lewis structure.
b)Give the shape of the molecule.
c)Indicate the polarity of the molecule.
-NH3

Accepted Answer

Part A: @#IMG-DLM& P

Question 8

Which of the following is not a valid resonance structure for N3-?

Accepted Answer

A)    
B)    
C)    
D)    
E) all are correct 
A)    
B)    
C)    
D)    
E) all are correct

Question 9

Which of the following is the correct order for molecules from most to least polar?

Accepted Answer

A) CH4 > CF2Cl2 > CF2H2 > CCl4 > CCl2H2 
B) CH4 > CF2H2 > CF2Cl2 > CCl4 > CCl2H2 
C) CF2Cl2 > CF2H2 > CCl2H2 > CH4 = CCl4 
D) CF2H2 > CCl2H2 > CF2Cl2 > CH4 = CCl4 
E) CF2Cl2 > CF2H2 > CCl4 > CCl2H2 > CH4 
A) CH4 > CF2Cl2 > CF2H2 > CCl4 > CCl2H2 
B) CH4 > CF2H2 > CF2Cl2 > CCl4 > CCl2H2 
C) CF2Cl2 > CF2H2 > CCl2H2 > CH4 = CCl4 
D) CF2H2 > CCl2H2 > CF2Cl2 > CH4 = CCl4 
E) CF2Cl2 > CF2H2 > CCl4 > CCl2H2 > CH4

Question 10

Atoms having equal or nearly equal electronegativities are expected to form

Accepted Answer

A) no bonds 
B) polar covalent bonds 
C) nonpolar covalent bonds 
D) ionic bonds 
E) covalent bonds 
A) no bonds 
B) polar covalent bonds 
C) nonpolar covalent bonds 
D) ionic bonds 
E) covalent bonds

Question 11

In which pair do both compounds exhibit predominantly ionic bonding?

Accepted Answer

A) SCl6 and HF 
B) Na2SO3 and NH3 
C) KI and O3 
D) LiF and H2O 
E) LiBr and MgO 
A) SCl6 and HF 
B) Na2SO3 and NH3 
C) KI and O3 
D) LiF and H2O 
E) LiBr and MgO

Question 12

Select the correct molecular structure for the given species from the choices below:
-BeCl2

Accepted Answer

A) linear 
B) trigonal planar 
C) tetrahedral 
D) bent 
E) none of these 
A) linear 
B) trigonal planar 
C) tetrahedral 
D) bent 
E) none of these

Question 13

Select the correct molecular structure for the given species from the choices below:
-PF5

Accepted Answer

A) linear 
B) trigonal planar 
C) tetrahedral 
D) bent 
E) none of these 
A) linear 
B) trigonal planar 
C) tetrahedral 
D) bent 
E) none of these

Question 14

The molecular structure of AsCl5 is

Accepted Answer

A) trigonal bipyramidal 
B) square pyramidal 
C) distorted tetrahedral 
D) octahedral 
E) none of these 
A) trigonal bipyramidal 
B) square pyramidal 
C) distorted tetrahedral 
D) octahedral 
E) none of these

Question 15

Choose the electron dot formula that most accurately describes the bonding in CS2.(Hint: Consider formal charges. )

Accepted Answer

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

Question 16

Draw the Lewis structures of the molecules below and use them to answer the following questions:
I.BHS1U1B13S1U1B0
II.NOS1U1B12S1U1B0
III.SFS1U1B16S1U1B0
IV.OS1U1B13S1U1B0
V.PClS1U1B15S1U1B0
-Which of these molecules show resonance?

Accepted Answer

A) I,II 
B) II,IV 
C) II,V 
D) III,IV 
E) III,V 
A) I,II 
B) II,IV 
C) II,V 
D) III,IV 
E) III,V

Question 17

Which of the following types of molecules always has a dipole moment?

Accepted Answer

A) Linear molecules with two identical bonds. 
B) Tetrahedral molecules (four identical bonds equally spaced). 
C) Trigonal pyramid molecules (three identical bonds). 
D) Trigonal planar molecules (three identical bonds equally spaced). 
E) None has a dipole moment. 
A) Linear molecules with two identical bonds. 
B) Tetrahedral molecules (four identical bonds equally spaced). 
C) Trigonal pyramid molecules (three identical bonds). 
D) Trigonal planar molecules (three identical bonds equally spaced). 
E) None has a dipole moment.

Question 18

Atoms with greatly different electronegativity values are expected to form

Accepted Answer

A) no bonds 
B) covalent bonds 
C) triple bonds 
D) ionic bonds 
E) none of these 
A) no bonds 
B) covalent bonds 
C) triple bonds 
D) ionic bonds 
E) none of these

Question 19

Select the correct molecular structure for the given species from the choices below:
-ClO2

Accepted Answer

A) pyramidal 
B) tetrahedral 
C) square planar 
D) octahedral 
E) none of these 
A) pyramidal 
B) tetrahedral 
C) square planar 
D) octahedral 
E) none of these

Question 20

In the Lewis structure for elemental nitrogen there is (are)

Accepted Answer

A) a single bond between the nitrogens 
B) a double bond between the nitrogens 
C) a triple bond between the nitrogens 
D) three unpaired electrons 
E) none of the above 
A) a single bond between the nitrogens 
B) a double bond between the nitrogens 
C) a triple bond between the nitrogens 
D) three unpaired electrons 
E) none of the above

Exam 8: Bonding: General Concepts

Which of the following ionic compounds has the largest lattice energy (i.e. ,the lattice energy most favorable to a stable lattice)?

Which of the following molecules contains a double bond?

Given the following Lewis structure: -How many unshared pairs of electrons are present in this molecule?

Which of the following species is best described by drawing resonance structures?

Consider the following molecules. I.BF3 II.CHBr3 (C is the central atom) III.Br2 IV.XeCl2 V.CO VI.SF4 Select the molecule(s)that fit the given statement. -These molecules have a trigonal bipyramidal electron pair arrangement.

For the elements Cs,F,and P,the order of increasing electronegativity is:

For each of the following compounds: a)Draw the Lewis structure. b)Give the shape of the molecule. c)Indicate the polarity of the molecule. -NH3

Which of the following is not a valid resonance structure for N3-?

Which of the following is the correct order for molecules from most to least polar?

Atoms having equal or nearly equal electronegativities are expected to form

In which pair do both compounds exhibit predominantly ionic bonding?

Select the correct molecular structure for the given species from the choices below: -BeCl2

Select the correct molecular structure for the given species from the choices below: -PF5

The molecular structure of AsCl5 is

Choose the electron dot formula that most accurately describes the bonding in CS2.(Hint: Consider formal charges. )

Draw the Lewis structures of the molecules below and use them to answer the following questions: I.BH3 II.NO2 III.SF6 IV.O3 V.PCl5 -Which of these molecules show resonance?

Which of the following types of molecules always has a dipole moment?

Atoms with greatly different electronegativity values are expected to form

Select the correct molecular structure for the given species from the choices below: -ClO2

In the Lewis structure for elemental nitrogen there is (are)

Chemical Foundations

Atoms, molecules, and Ions

Stoichiometry

Chemical Reactions and Solutions Stoichiometry

Gases

Thermochemistry

Atomic Structure and Periodicity

Covalent Bonding: Orbitals

Liquids and Solids

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria

Solubility and Complex Ion Equilibria

Spontaneity, entropy, and Free Energy

Electrochemistry

The Nucleus: a Chemists View

The Representative Elements

Transition Metals and Coordination Chemistry

Organic and Biological Molecules

Filters

Consider the following molecules. I.BF₃ II.CHBr₃ (C is the central atom) III.Br₂ IV.XeCl₂ V.CO VI.SF₄ Select the molecule(s)that fit the given statement. -These molecules have a trigonal bipyramidal electron pair arrangement.

For each of the following compounds: a)Draw the Lewis structure. b)Give the shape of the molecule. c)Indicate the polarity of the molecule. -NH₃

Which of the following is not a valid resonance structure for N₃^-?

Select the correct molecular structure for the given species from the choices below: -BeCl₂

Select the correct molecular structure for the given species from the choices below: -PF₅

The molecular structure of AsCl₅ is

Choose the electron dot formula that most accurately describes the bonding in CS₂.(Hint: Consider formal charges. )

Draw the Lewis structures of the molecules below and use them to answer the following questions: I.BH₃ II.NO₂ III.SF₆ IV.O₃ V.PCl₅ -Which of these molecules show resonance?

Select the correct molecular structure for the given species from the choices below: -ClO₂