Question 1

What type of structure does the XeOF2 molecule have?

Accepted Answer

A)  pyramidal
B)  tetrahedral
C)  T-shaped
D)  trigonal planar
E)  octahedralF) C) and D)
G) D) and E)

Question 2

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

Accepted Answer

A)  NH3
B)  H2O
C)  CH4
D)  NaCl
E)  BF3F) A) and B)
G) B) and D)

Question 3

Which of the following molecules is non-polar overall?

Accepted Answer

A)  SF4
B)  SF2
C)  CCl4
D)  H2S
E)  OCl2F) None of the above
G) A) and E)

Question 4

Consider the following reaction: A2 + B2  →	o→  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?

Accepted Answer

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

Question 5

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 linearF) A) and B)
G) A) and C)

Question 6

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?

Accepted Answer

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

Question 7

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.F) None of the above
G) B) and D)

Question 8

Metals typically have _______ electronegativity values.

Accepted Answer

A)  high
B)  low
C)  negative
D)  no
E)  two of theseF) B) and D)
G) A) and B)

Question 9

Which of the following has the smallest radius?

Accepted Answer

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

Question 10

The shape of a carbon dioxide molecule is linear.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following molecules has no dipole moment?

Accepted Answer

A)  CO2
B)  NH3
C)  H2O
D)  all
E)  noneF) A) and C)
G) B) and D)

Question 12

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-OF) A) and B)
G) B) and D)

Question 13

The molecular structure of SOCl2 is

Accepted Answer

A)  pyramidal
B)  none of these
C)  octahedral
D)  trigonal planar
E)  bentF) A) and B)
G) C) and D)

Question 14

Which of the following species has a trigonal bipyramid structure?

Accepted Answer

A)  NH3
B)  IF5
C)  I3-
D)  PCl5
E)  none of theseF) A) and E)
G) B) and D)

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.F) B) and C)
G) A) and B)

Question 16

Which of the following has the smallest radius?

Accepted Answer

A)  K+
B)  Cl-
C)  Rb+
D)  S2-
E)  ArF) D) and E)
G) A) and D)

Question 17

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

Accepted Answer

A)  CO2
B)  CO32-
C)  NH4+
D)  PF3
E)  two of themF) C) and E)
G) B) and E)

Question 18

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,NH3F) B) and D)
G) D) and E)

Question 19

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 theseF) A) and E)
G) C) and D)

Question 20

Choose the compound with the most ionic bond.

Accepted Answer

A)  LiCl
B)  KF
C)  NaCl
D)  LiF
E)  KClF) All of the above
G) B) and E)

Exam 8: Bonding: General Concepts

Which of the following has the smallest radius?

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Which of the following exhibits resonance?

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Which of the following statements are true concerning ionic bonding?

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Which of the following has the smallest radius?

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

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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?

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Which of the following molecules is non-polar overall?

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What type of structure does the XeOF2 molecule have?

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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?

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

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The molecular structure of SOCl2 is

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Choose the compound with the most ionic bond.

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Which of the following groups contains no ionic compounds?

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

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Which of the following molecules has no dipole moment?

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Metals typically have _______ electronegativity values.

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

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Which of the following species has a trigonal bipyramid structure?

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

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The shape of a carbon dioxide molecule is linear.

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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?

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What type of structure does the XeOF₂ molecule have?

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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?

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The molecular structure of SOCl₂ is

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

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

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