Question 1

Which one of these polar covalent bonds would have the greatest percent ionic character?

Accepted Answer

A)  H - Br
B)  H - Cl
C)  H - F
D)  H - IE) B) and D)
F) C) and D)

Question 2

The Si - Cl bond has less ionic character than the C - Cl bond.

Accepted Answer

A) True 
 B)False

Question 3

Which of the elements listed below is the least electronegative?

Accepted Answer

A)  Sr
B)  V
C)  Ni
D)  P
E)  IF) C) and D)
G) None of the above

Question 4

Which one of the following compounds does not follow the octet rule?

Accepted Answer

A)  NF3
B)  CF4
C)  PF5
D)  AsH3
E)  HClF) B) and E)
G) A) and B)

Question 5

The number of resonance structures for the sulfur dioxide molecule that satisfy the octet rule is

Accepted Answer

A)  1.
B)  2.
C)  3.
D)  4.
E)  None of these.F) B) and D)
G) A) and D)

Question 6

Estimate the enthalpy change for the combustion of one mole of acetylene, C2H2, to form carbon dioxide and water vapor. BE(C-H) = 456 kJ/mol
BE(C ≡\equiv≡ C) = 962 kJ/mol
BE(O=O) = 499 kJ/mol
BE(C=O) = 802 kJ/mol
BE(O-H) = 462 kJ/mol

Accepted Answer

A)  -1759 kJ/mol
B)  +653 kJ/mol
C)  +1010 kJ/mol
D)  -1010 kJ/mol
E)  -155 kJ/mol F) A) and E)
G) B) and E)

Question 7

Which of the following ionic solids would have the largest lattice energy?

Accepted Answer

A)  SrO
B)  NaF
C)  CaBr2
D)  CsI
E)  BaSO4F) A) and B)
G) B) and D)

Question 8

How many covalent bonds will be drawn to bromine in BrO3- for the dot structure that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s) ?

Accepted Answer

A)  3
B)  4
C)  5
D)  6
E)  7F) B) and D)
G) B) and C)

Question 9

The bond in which of the following pairs of atoms would have the greatest percent ionic character (i.e., most polar) ?

Accepted Answer

A)  C - O
B)  S - O
C)  Na - I
D)  Na - Br
E)  F - FF) C) and D)
G) B) and C)

Question 10

Which of the elements listed below has the greatest electronegativity?

Accepted Answer

A)  Na
B)  As
C)  Ga
D)  Cs
E)  SbF) B) and C)
G) A) and B)

Question 11

Which of the bonds below would have the greatest polarity (i.e., highest percent ionic character) ?

Accepted Answer

A)  Si - P
B)  Si - S
C)  Si - Se
D)  Si - Cl
E)  Si - IF) B) and E)
G) A) and C)

Question 12

Calculate the energy change for the reaction K(g) + I(g)  →\rarr→  K+(g) + I - (g) 
Given the following ionization energy (IE) and electron affinity (EA) values. +(g) + I - (g)  Given the following ionization energy (IE) and electron affinity (EA) values.   A) -124 kJ/mol B) -715 kJ/mol C) 715 kJ/mol D) 1429 kJ/mol E) None of these " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  -124 kJ/mol
B)  -715 kJ/mol
C)  715 kJ/mol
D)  1429 kJ/mol
E)  None of these F) C) and E)
G) D) and E)

Question 13

How many covalent bonds will be drawn to phosphorous in PO43- for the dot structure that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s) ?

Accepted Answer

A)  4
B)  5
C)  6
D)  7
E)  8F) A) and C)
G) B) and E)

Question 14

Which of the following pairs of elements would be most likely to form an ionic compound?

Accepted Answer

A)  Cl and I
B)  Al and K
C)  Cl and Mg
D)  C and S
E)  Al and MgF) A) and B)
G) A) and C)

Question 15

Of the species NO2, NO, and N2, only NO2 is an exception to the octet rule.

Accepted Answer

A) True 
 B)False

Question 16

The bond in F2 is described as polar covalent.

Accepted Answer

A) True 
 B)False

Question 17

Write a Lewis structure for the chlorate ion, ClO3-, that obeys the octet rule, showing all non-zero formal charges, and give the total number of resonance structures for ClO3- that obey the octet rule.

Accepted Answer

<img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30"> Total number of res...

Question 18

Which one of the following is most likely to be a covalent compound?

Accepted Answer

A)  CsOH
B)  NF3
C)  Sr(NO3) 2
D)  CaO
E)  LiFF) C) and E)
G) A) and D)

Question 19

Use the Born-Haber cycle to calculate the lattice energy of KCl(s) given the following data:  Δ\DeltaΔ H(sublimation) K = 79.2 kJ/mol
I1 (K) = 418.7 kJ/mol
Bond energy (Cl-Cl) = 242.8 kJ/mol
EA (Cl) = 348 kJ/mol
 Δ\DeltaΔ H 1 (K) = 418.7 kJ/mol Bond energy (Cl-Cl) = 242.8 kJ/mol EA (Cl) = 348 kJ/mol  \Delta H   (KCl(s) ) = -435.7 kJ/mol A) -165 kJ/mol B) 288 kJ/mol C) 629 kJ/mol D) 707 kJ/mol E) 828 kJ/mol " class="answers-bank-image d-inline" rel="preload" > (KCl(s) ) = -435.7 kJ/mol

Accepted Answer

A)  -165 kJ/mol
B)  288 kJ/mol
C)  629 kJ/mol
D)  707 kJ/mol
E)  828 kJ/mol F) B) and D)
G) A) and B)

Question 20

Use the Born-Haber cycle to calculate the standard enthalpy of formation ( Δ\DeltaΔ H 1 (Li) = 520 kJ/mol Bond energy (Cl-Cl) = 242.7 kJ/mol EA (Cl) = 349 kJ/mol Lattice energy (LiCl(s) ) = 828 kJ/mol A) 440 kJ/mol B) 320 kJ/mol C) -260 kJ/mol D) -380 kJ/mol E) -1420 kJ/mol " class="answers-bank-image d-inline" rel="preload" > ) for LiCl(s) given the following data:  Δ\DeltaΔ H(sublimation) Li = 155.2 kJ/mol
I1 (Li) = 520 kJ/mol
Bond energy (Cl-Cl) = 242.7 kJ/mol
EA (Cl) = 349 kJ/mol
Lattice energy (LiCl(s) ) = 828 kJ/mol

Accepted Answer

A)  440 kJ/mol
B)  320 kJ/mol
C)  -260 kJ/mol
D)  -380 kJ/mol
E)  -1420 kJ/mol F) A) and E)
G) D) and E)

Exam 9: Chemical Bonding I: the Covalent Bond

Which one of the following is most likely to be a covalent compound?

Correct Answer
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Which of the following ionic solids would have the largest lattice energy?

Correct Answer
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Of the species NO₂, NO, and N₂, only NO₂ is an exception to the octet rule.

Correct Answer
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Which one of these polar covalent bonds would have the greatest percent ionic character?

Correct Answer
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Which of the elements listed below is the least electronegative?

Correct Answer
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The number of resonance structures for the sulfur dioxide molecule that satisfy the octet rule is

Correct Answer
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Write a Lewis structure for the chlorate ion, ClO₃^-, that obeys the octet rule, showing all non-zero formal charges, and give the total number of resonance structures for ClO₃^- that obey the octet rule.

Correct Answer
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Total number of res...
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Which one of the following compounds does not follow the octet rule?

Correct Answer
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Correct Answer
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Which of the elements listed below has the greatest electronegativity?

Correct Answer
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The bond in which of the following pairs of atoms would have the greatest percent ionic character (i.e., most polar) ?

Correct Answer
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Which of the bonds below would have the greatest polarity (i.e., highest percent ionic character) ?

Correct Answer
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The bond in F₂ is described as polar covalent.

Correct Answer
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Correct Answer
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The Si - Cl bond has less ionic character than the C - Cl bond.

Correct Answer
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Estimate the enthalpy change for the combustion of one mole of acetylene, C₂H₂, to form carbon dioxide and water vapor. BE(C-H) = 456 kJ/mol BE(C $\equiv$ C) = 962 kJ/mol BE(O=O) = 499 kJ/mol BE(C=O) = 802 kJ/mol BE(O-H) = 462 kJ/mol

Correct Answer
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How many covalent bonds will be drawn to phosphorous in PO₄^3- for the dot structure that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s) ?

Correct Answer
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How many covalent bonds will be drawn to bromine in BrO₃^- for the dot structure that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s) ?

Correct Answer
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Correct Answer
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Which of the following pairs of elements would be most likely to form an ionic compound?

Correct Answer
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Exam 9: Chemical Bonding I: the Covalent Bond

Which one of the following is most likely to be a covalent compound?

Correct AnswerverifiedShow Answer

Which of the following ionic solids would have the largest lattice energy?

Correct AnswerverifiedShow Answer

Of the species NO2, NO, and N2, only NO2 is an exception to the octet rule.

Correct AnswerverifiedShow Answer

Which one of these polar covalent bonds would have the greatest percent ionic character?

Correct AnswerverifiedShow Answer

Which of the elements listed below is the least electronegative?

Correct AnswerverifiedShow Answer

The number of resonance structures for the sulfur dioxide molecule that satisfy the octet rule is

Correct AnswerverifiedShow Answer

Write a Lewis structure for the chlorate ion, ClO3-, that obeys the octet rule, showing all non-zero formal charges, and give the total number of resonance structures for ClO3- that obey the octet rule.

Correct Answerverified Total number of res...View AnswerShow Answer

Which one of the following compounds does not follow the octet rule?

Correct AnswerverifiedShow Answer

Use the Born-Haber cycle to calculate the standard enthalpy of formation ( Δ\DeltaΔ H ) for LiCl(s) given the following data: Δ\DeltaΔ H(sublimation) Li = 155.2 kJ/mol I1 (Li) = 520 kJ/mol Bond energy (Cl-Cl) = 242.7 kJ/mol EA (Cl) = 349 kJ/mol Lattice energy (LiCl(s) ) = 828 kJ/mol

Correct AnswerverifiedShow Answer

Which of the elements listed below has the greatest electronegativity?

Correct AnswerverifiedShow Answer

The bond in which of the following pairs of atoms would have the greatest percent ionic character (i.e., most polar) ?

Correct AnswerverifiedShow Answer

Which of the bonds below would have the greatest polarity (i.e., highest percent ionic character) ?

Correct AnswerverifiedShow Answer

The bond in F2 is described as polar covalent.

Correct AnswerverifiedShow Answer

Use the Born-Haber cycle to calculate the lattice energy of KCl(s) given the following data: Δ\DeltaΔ H(sublimation) K = 79.2 kJ/mol I1 (K) = 418.7 kJ/mol Bond energy (Cl-Cl) = 242.8 kJ/mol EA (Cl) = 348 kJ/mol Δ\DeltaΔ H (KCl(s) ) = -435.7 kJ/mol

Correct AnswerverifiedShow Answer

The Si - Cl bond has less ionic character than the C - Cl bond.

Correct AnswerverifiedShow Answer

Estimate the enthalpy change for the combustion of one mole of acetylene, C2H2, to form carbon dioxide and water vapor. BE(C-H) = 456 kJ/mol BE(C ≡\equiv≡ C) = 962 kJ/mol BE(O=O) = 499 kJ/mol BE(C=O) = 802 kJ/mol BE(O-H) = 462 kJ/mol

Correct AnswerverifiedShow Answer

How many covalent bonds will be drawn to phosphorous in PO43- for the dot structure that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s) ?

Correct AnswerverifiedShow Answer

How many covalent bonds will be drawn to bromine in BrO3- for the dot structure that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s) ?

Correct AnswerverifiedShow Answer

Calculate the energy change for the reaction K(g) + I(g) →\rarr→ K+(g) + I - (g) Given the following ionization energy (IE) and electron affinity (EA) values.

Correct AnswerverifiedShow Answer

Which of the following pairs of elements would be most likely to form an ionic compound?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Of the species NO₂, NO, and N₂, only NO₂ is an exception to the octet rule.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Write a Lewis structure for the chlorate ion, ClO₃^-, that obeys the octet rule, showing all non-zero formal charges, and give the total number of resonance structures for ClO₃^- that obey the octet rule.

Correct Answer
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Total number of res...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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The bond in F₂ is described as polar covalent.

Correct Answer
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Correct Answer
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Correct Answer
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Estimate the enthalpy change for the combustion of one mole of acetylene, C₂H₂, to form carbon dioxide and water vapor. BE(C-H) = 456 kJ/mol BE(C $\equiv$ C) = 962 kJ/mol BE(O=O) = 499 kJ/mol BE(C=O) = 802 kJ/mol BE(O-H) = 462 kJ/mol

Correct Answer
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How many covalent bonds will be drawn to phosphorous in PO₄^3- for the dot structure that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s) ?

Correct Answer
verified

How many covalent bonds will be drawn to bromine in BrO₃^- for the dot structure that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s) ?

Correct Answer
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Correct Answer
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Correct Answer
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