Question 1

List the most electronegative atom.

Accepted Answer

The answer of List the most electronegative atom....

Question 2

Draw the Lewis structure for CO32- including any valid resonance structures.Which of the following statements is TRUE?

Accepted Answer

A)  The CO32- ion contains one C-O single bond and two C   O double bonds. 
B)  The CO32- ion contains two C-O single bonds and one C   O double bond. 
C)  The CO32- ion contains three C-O double bonds. 
D)  The CO32- ion contains two C-O single bonds and one C   O triple bond. 
E)  None of the above are true. 
A)  The CO32- ion contains one C-O single bond and two C   O double bonds. 
B)  The CO32- ion contains two C-O single bonds and one C   O double bond. 
C)  The CO32- ion contains three C-O double bonds. 
D)  The CO32- ion contains two C-O single bonds and one C   O triple bond. 
E)  None of the above are true.

Question 3

Draw the Lewis structure for CO32⁻.How many equivalent resonance structures can be drawn?

Accepted Answer

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

Question 4

Choose the bond below that is the strongest.

Accepted Answer

A)  C-F 
B)  C=O 
C)  C-Br 
D)  Br-Br 
E)  C≡C 
A)  C-F 
B)  C=O 
C)  C-Br 
D)  Br-Br 
E)  C≡C

Question 5

Determine the electron geometry (eg),molecular geometry(mg)and polarity of XeO3.

Accepted Answer

A)  eg = trigonal planar, mg = trigonal planar, nonpolar 
B)  eg = tetrahedral, mg = trigonal pyramidal, polar 
C)  eg = trigonal planar, mg = trigonal pyramidal, polar 
D)  eg = trigonal bipyramidal, mg = trigonal planar, nonpolar 
E)  eg = octahedral, mg = tetrahedral, nonpolar 
A)  eg = trigonal planar, mg = trigonal planar, nonpolar 
B)  eg = tetrahedral, mg = trigonal pyramidal, polar 
C)  eg = trigonal planar, mg = trigonal pyramidal, polar 
D)  eg = trigonal bipyramidal, mg = trigonal planar, nonpolar 
E)  eg = octahedral, mg = tetrahedral, nonpolar

Question 6

Place the following in order of increasing X-Se-X bond angle,where X represents the outer atoms in each molecule. SeO2 SeCl6 SeF2

Accepted Answer

A)  SeCl6 2 2 
B)  SeF2 2 6 
C)  SeF2 6 2 
D)  SeO2 2 6 
E)  SeCl6 2 2 
A)  SeCl6 2 2 
B)  SeF2 2 6 
C)  SeF2 6 2 
D)  SeO2 2 6 
E)  SeCl6 2 2

Question 7

Which molecule or compound below contains a polar covalent bond?

Accepted Answer

A)  C2H4 
B)  MgS 
C)  K F 
D)  NI3 
E)  Ag Cl 
A)  C2H4 
B)  MgS 
C)  K F 
D)  NI3 
E)  Ag Cl

Question 8

Draw the best Lewis structure for CH3+1.What is the formal charge on the C?

Accepted Answer

A)  0 
B)  1 
C)  -1 
D)  2 
A)  0 
B)  1 
C)  -1 
D)  2

Question 9

Which element can expand its valence shell to accommodate more than eight electrons?

Accepted Answer

A)  C 
B)  O 
C)  P 
D)  He 
A)  C 
B)  O 
C)  P 
D)  He

Question 10

Which molecule or compound below contains an ionic bond?

Accepted Answer

A)  C S2 
B)  C2Cl4 
C)  Si F4 
D)  OCl2 
E)  NH4NO3 
A)  C S2 
B)  C2Cl4 
C)  Si F4 
D)  OCl2 
E)  NH4NO3

Question 11

Determine the electron geometry (eg)and molecular geometry (mg)of XeF2.

Accepted Answer

A)  eg = trigonal bipyramidal, mg = bent 
B)  eg = linear, mg = linear 
C)  eg = tetrahedral, mg = linear 
D)  eg = trigonal bipyramidal, mg = linear 
E)  eg = tetrahedral, mg = bent 
A)  eg = trigonal bipyramidal, mg = bent 
B)  eg = linear, mg = linear 
C)  eg = tetrahedral, mg = linear 
D)  eg = trigonal bipyramidal, mg = linear 
E)  eg = tetrahedral, mg = bent

Question 12

Choose the best Lewis structure for SeO42⁻.

Accepted Answer

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

Question 13

Define dipole moment.

Accepted Answer

Dipole moment is the measured

Question 14

Choose the bond below that is the weakest.

Accepted Answer

A)  Na-F 
B)  Br-Br 
C)  C=N 
D)  Li-I 
E)  C=O 
A)  Na-F 
B)  Br-Br 
C)  C=N 
D)  Li-I 
E)  C=O

Question 15

Determine the electron geometry (eg),molecular geometry (mg),and polarity of SO3.

Accepted Answer

A)  eg = tetrahedral, mg = trigonal pyramidal, polar 
B)  eg = tetrahedral, mg = tetrahedral, nonpolar 
C)  eg = trigonal planar, mg = trigonal planar, nonpolar 
D)  eg = trigonal bipyramidal, mg = trigonal planar, polar 
E)  eg = trigonal pyramidal, mg = bent, nonpolar 
A)  eg = tetrahedral, mg = trigonal pyramidal, polar 
B)  eg = tetrahedral, mg = tetrahedral, nonpolar 
C)  eg = trigonal planar, mg = trigonal planar, nonpolar 
D)  eg = trigonal bipyramidal, mg = trigonal planar, polar 
E)  eg = trigonal pyramidal, mg = bent, nonpolar

Question 16

Give the number of pairs of valence electrons for B Br3.

Accepted Answer

A)  16 
B)  8 
C)  14 
D)  10 
E)  12 
A)  16 
B)  8 
C)  14 
D)  10 
E)  12

Question 17

Determine the molecular geometry about each interior atom in the following structure.Sketch the three-dimensional structure and label the interior atoms with the corresponding molecular geometry.
CH2CHCCCH3

Accepted Answer

The sketch should show all of the approp

Question 18

Using periodic trends,place the following bonds in order of increasing ionic character. Si-P Si-Cl Si-S

Accepted Answer

A)  Si-P < Si-Cl < Si-S 
B)  Si-P < Si-S < Si-Cl 
C)  Si-S < Si-Cl < Si-P 
D)  Si-Cl < Si-P < Si-S 
E)  Si-Cl < Si-S < Si-P 
A)  Si-P < Si-Cl < Si-S 
B)  Si-P < Si-S < Si-Cl 
C)  Si-S < Si-Cl < Si-P 
D)  Si-Cl < Si-P < Si-S 
E)  Si-Cl < Si-S < Si-P

Question 19

Which compound has the shortest carbon-carbon bond length?

Accepted Answer

A)  CH3CH3 
B)  CH2CH2 
C)  HCCH 
D)  All bond lengths are the same. 
A)  CH3CH3 
B)  CH2CH2 
C)  HCCH 
D)  All bond lengths are the same.

Question 20

Identify the number of bonding pairs and lone pairs of electrons in Br2.

Accepted Answer

A)  6 bonding pair and 1 lone pair 
B)  4 bonding pair and 2 lone pairs 
C)  1 bonding pairs and 6 lone pairs 
D)  2 bonding pairs and 1 lone pair 
E)  2 bonding pairs and 3 lone pairs 
A)  6 bonding pair and 1 lone pair 
B)  4 bonding pair and 2 lone pairs 
C)  1 bonding pairs and 6 lone pairs 
D)  2 bonding pairs and 1 lone pair 
E)  2 bonding pairs and 3 lone pairs

Exam 6: Chemical Bonding I

List the most electronegative atom.

Draw the Lewis structure for CO32- including any valid resonance structures.Which of the following statements is TRUE?

Draw the Lewis structure for CO32⁻.How many equivalent resonance structures can be drawn?

Choose the bond below that is the strongest.

Determine the electron geometry (eg),molecular geometry(mg)and polarity of XeO3.

Place the following in order of increasing X-Se-X bond angle,where X represents the outer atoms in each molecule. SeO2 SeCl6 SeF2

Which molecule or compound below contains a polar covalent bond?

Draw the best Lewis structure for CH3+1.What is the formal charge on the C?

Which element can expand its valence shell to accommodate more than eight electrons?

Which molecule or compound below contains an ionic bond?

Determine the electron geometry (eg)and molecular geometry (mg)of XeF2.

Choose the best Lewis structure for SeO42⁻.

Define dipole moment.

Choose the bond below that is the weakest.

Determine the electron geometry (eg),molecular geometry (mg),and polarity of SO3.

Give the number of pairs of valence electrons for B Br3.

Determine the molecular geometry about each interior atom in the following structure.Sketch the three-dimensional structure and label the interior atoms with the corresponding molecular geometry. CH2CHCCCH3

Using periodic trends,place the following bonds in order of increasing ionic character. Si-P Si-Cl Si-S

Which compound has the shortest carbon-carbon bond length?

Identify the number of bonding pairs and lone pairs of electrons in Br2.

Essentials: Units, Measurements, and Problem Solving

Atoms

The Quantum Mechanical Model of the Atom

Periodic Properties of the Elements

Molecules and Compounds

Chemical Bonding Ii

Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

Thermochemistry

Gases

Liquids, Solids, and Intermolecular Forces

Crystalline Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Transition Metals and Coordination Compounds

Filters

Draw the Lewis structure for CO₃^2- including any valid resonance structures.Which of the following statements is TRUE?

Draw the Lewis structure for CO₃²⁻.How many equivalent resonance structures can be drawn?

Determine the electron geometry (eg),molecular geometry(mg)and polarity of XeO₃.

Place the following in order of increasing X-Se-X bond angle,where X represents the outer atoms in each molecule. SeO₂ SeCl₆SeF₂

Draw the best Lewis structure for CH₃⁺¹.What is the formal charge on the C?

Determine the electron geometry (eg)and molecular geometry (mg)of XeF₂.

Choose the best Lewis structure for SeO₄²⁻.

Determine the electron geometry (eg),molecular geometry (mg),and polarity of SO₃.

Give the number of pairs of valence electrons for B Br₃.

Determine the molecular geometry about each interior atom in the following structure.Sketch the three-dimensional structure and label the interior atoms with the corresponding molecular geometry. CH₂CHCCCH₃

Identify the number of bonding pairs and lone pairs of electrons in Br₂.