Question 1

Which of the following groups contains no ionic compounds?

Accepted Answer

A) HCN,NO2,Ca(NO3)2 
B) PCl5,LiBr,Zn(OH)2 
C) KOH,CCl4,SF4 
D) NaH,CaF2,NaNH2 
E) CH2O,H2S,NH3 
A) HCN,NO2,Ca(NO3)2 
B) PCl5,LiBr,Zn(OH)2 
C) KOH,CCl4,SF4 
D) NaH,CaF2,NaNH2 
E) CH2O,H2S,NH3

Question 2

Which of the following molecules are nonlinear? NO2-,C2H2,N3-,HCN,CO2,H2O2

Accepted Answer

A) C2H2,HCN 
B) CO2,N3- 
C) NO2-,H2O2 
D) N3-,NO2- 
E) all are linear 
A) C2H2,HCN 
B) CO2,N3- 
C) NO2-,H2O2 
D) N3-,NO2- 
E) all are linear

Question 3

Which of the following bonds would be the most polar without being considered ionic?

Accepted Answer

A) Mg-O 
B) C-O 
C) O-O 
D) Si-O 
E) N-O 
A) Mg-O 
B) C-O 
C) O-O 
D) Si-O 
E) N-O

Question 4

Which of the following compounds contains only one unshared pair of valence electrons?

Accepted Answer

A) NH3 
B) H2O 
C) CH4 
D) NaCl 
E) BF3 
A) NH3 
B) H2O 
C) CH4 
D) NaCl 
E) BF3

Question 5

Which of the following molecules has no dipole moment?

Accepted Answer

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

Question 6

Which of the following has the smallest radius?

Accepted Answer

A) F- 
B) Ne 
C) O2- 
D) Mg2+ 
E) Na+ 
A) F- 
B) Ne 
C) O2- 
D) Mg2+ 
E) Na+

Question 7

Which of the following has the smallest radius?

Accepted Answer

A) K+ 
B) Cl- 
C) Rb+ 
D) S2- 
E) Ar 
A) K+ 
B) Cl- 
C) Rb+ 
D) S2- 
E) Ar

Question 8

Which of the following species has a trigonal bipyramid structure?

Accepted Answer

A) NH3 
B) IF5 
C) I3- 
D) PCl5 
E) none of these 
A) NH3 
B) IF5 
C) I3- 
D) PCl5 
E) none of these

Question 9

Which of the following molecules (or ions)has a dipole moment?

Accepted Answer

A) CO2 
B) CO32- 
C) NH4+ 
D) PF3 
E) two of them 
A) CO2 
B) CO32- 
C) NH4+ 
D) PF3 
E) two of them

Question 10

Select the correct molecular structure for the given species from the choices below:
-SiH4

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 11

What type of structure does the XeOF2 molecule have?

Accepted Answer

A) pyramidal 
B) tetrahedral 
C) T-shaped 
D) trigonal planar 
E) octahedral 
A) pyramidal 
B) tetrahedral 
C) T-shaped 
D) trigonal planar 
E) octahedral

Question 12

Consider the following reaction: A2 + B2 $\to$ 2AB $\Delta$H = -365 kJ
The bond energy for A2 is half the amount of AB.The bond energy of B2 = 447 kJ/mol.What is the bond energy of A2?

Accepted Answer

A) 812 kJ/mol 
B) 630 kJ/mol 
C) 271 kJ/mol 
D) -183 kJ/mol 
E) none of these 
A) 812 kJ/mol 
B) 630 kJ/mol 
C) 271 kJ/mol 
D) -183 kJ/mol 
E) none of these

Question 13

The shape of a carbon dioxide molecule is linear.

Accepted Answer

A) True 
 B)False

Question 14

Metals typically have _______ electronegativity values.

Accepted Answer

A) high 
B) low 
C) negative 
D) no 
E) two of these 
A) high 
B) low 
C) negative 
D) no 
E) two of these

Question 15

Which of the following exhibits resonance?

Accepted Answer

A) NH3 
B) PCl5 
C) H2O 
D) O3 
E) At least two of the molecules (A-
D) exhibit resonance. 
A) NH3 
B) PCl5 
C) H2O 
D) O3 
E) At least two of the molecules (A-
D) exhibit resonance.

Question 16

The molecular structure of SOCl2 is

Accepted Answer

A) pyramidal 
B) none of these 
C) octahedral 
D) trigonal planar 
E) bent 
A) pyramidal 
B) none of these 
C) octahedral 
D) trigonal planar 
E) bent

Question 17

Choose the compound with the most ionic bond.

Accepted Answer

A) LiCl 
B) KF 
C) NaCl 
D) LiF 
E) KCl 
A) LiCl 
B) KF 
C) NaCl 
D) LiF 
E) KCl

Question 18

Which of the following molecules is non-polar overall?

Accepted Answer

A) SF4 
B) SF2 
C) CCl4 
D) H2S 
E) OCl2 
A) SF4 
B) SF2 
C) CCl4 
D) H2S 
E) OCl2

Question 19

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
-How many of the molecules have no dipole moment?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) They are all polar. 
A) 1 
B) 2 
C) 3 
D) 4 
E) They are all polar.

Question 20

Which of the following statements are true concerning ionic bonding?

Accepted Answer

A) Ionic bonding occurs between a metal,which has a high affinity for electrons,and a nonmetal,which loses electrons relatively easy. 
B) CaCl2 forms because Ca2+ is always a more stable species than the calcium atom alone. 
C) Compounds with ionic bonds tend to have low melting points. 
D) The electronegativity difference between the bonding atoms of ionic compounds is small since the electrons are not shared but rather held together by electrostatic forces. 
E) All of the above statements are false. 
A) Ionic bonding occurs between a metal,which has a high affinity for electrons,and a nonmetal,which loses electrons relatively easy. 
B) CaCl2 forms because Ca2+ is always a more stable species than the calcium atom alone. 
C) Compounds with ionic bonds tend to have low melting points. 
D) The electronegativity difference between the bonding atoms of ionic compounds is small since the electrons are not shared but rather held together by electrostatic forces. 
E) All of the above statements are false.

Exam 8: Bonding: General Concepts

Which of the following groups contains no ionic compounds?

Which of the following molecules are nonlinear? NO2-,C2H2,N3-,HCN,CO2,H2O2

Which of the following bonds would be the most polar without being considered ionic?

Which of the following compounds contains only one unshared pair of valence electrons?

Which of the following molecules has no dipole moment?

Which of the following has the smallest radius?

Which of the following has the smallest radius?

Which of the following species has a trigonal bipyramid structure?

Which of the following molecules (or ions)has a dipole moment?

Select the correct molecular structure for the given species from the choices below: -SiH4

What type of structure does the XeOF2 molecule have?

Consider the following reaction: A2 + B2 →\to→ 2AB Δ\DeltaΔ H = -365 kJ The bond energy for A2 is half the amount of AB.The bond energy of B2 = 447 kJ/mol.What is the bond energy of A2?

The shape of a carbon dioxide molecule is linear.

Metals typically have _______ electronegativity values.

Which of the following exhibits resonance?

The molecular structure of SOCl2 is

Choose the compound with the most ionic bond.

Which of the following molecules is non-polar overall?

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 -How many of the molecules have no dipole moment?

Which of the following statements are true concerning ionic bonding?

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

Which of the following molecules are nonlinear? NO₂^-,C₂H₂,N₃^-,HCN,CO₂,H₂O₂

Select the correct molecular structure for the given species from the choices below: -SiH₄

What type of structure does the XeOF₂ molecule have?

Consider the following reaction: A₂ + B₂ $\to$ 2AB $\Delta$ H = -365 kJ The bond energy for A₂ is half the amount of AB.The bond energy of B₂ = 447 kJ/mol.What is the bond energy of A₂?

The molecular structure of SOCl₂ is

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 -How many of the molecules have no dipole moment?