Question 1

Using the data predict the lattice energy of NaCl

Accepted Answer

A)  -787 kJ/mol
B)  -900 kJ/mol
C)  -680 kJ/mol
D)  -600 kJ/molE) None of the above
F) B) and C)

Question 2

Which molecule or compound below contains a polar covalent bond?

Accepted Answer

A)  C2H4
B)  ZnS
C)  LiI
D)  NCl3
E)  AgClF) A) and E)
G) C) and E)

Question 3

Which of the following ionic compounds would be expected to have the highest lattice energy?

Accepted Answer

A)  LiF
B)  LiCl
C)  LiBr
D)  LiIE) A) and C)
F) A) and B)

Question 4

Draw the Lewis structure for NO2⁻ including any valid resonance structures.Which of the following statements is true?

Accepted Answer

A)  The nitrite ion contains one N-O single bond and one N=O double bond.
B)  The nitrite ion contains two N-O bonds that are equivalent to 1.5 bonds.
C)  The nitrite ion contains two N=O double bonds.
D)  The nitrite ion contains two N-O single bonds.
E)  None of the above are true.F) C) and D)
G) D) and E)

Question 5

Which of the following represent the Lewis structure for Cl?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) A) and B)
G) B) and D)

Question 6

In the Lewis structure of CH3OH,how many lone pairs of electrons are there?

Accepted Answer

A)  5
B)  7
C)  3
D)  2E) All of the above
F) A) and D)

Question 7

Which has the highest meting point?

Accepted Answer

A)  NaCl
B)  KCl
C)  RbCl
D)  CsClE) All of the above
F) None of the above

Question 8

Which of the following reactions is associated with the lattice energy of CaS (ΔH°latt) ?

Accepted Answer

A)  Ca(s) + S(s) → CaS(s) 
B)  CaS(s) → Ca(s) + S(s) 
C)  Ca2⁺(aq) + S2⁻(aq) → CaS(s) 
D)  Ca2⁺(g) + S2⁻(g) → CaS(s) 
E)  CaS(s) → Ca2+(aq) + S2⁻(aq) F) C) and D)
G) All of the above

Question 9

Predict the formula of an ionic compound between aluminum and oxygen.

Accepted Answer

A)  AlO2
B)  AlO
C)  Al2O3
D)  Al3O2E) All of the above
F) B) and C)

Question 10

Choose the bond below that is most polar.

Accepted Answer

A)  H-I
B)  H-Br
C)  H-F
D)  H-Cl
E)  C-HF) B) and E)
G) A) and C)

Question 11

Which ionic compound would be expected to have the highest lattice energy?

Accepted Answer

A)  Rb2O
B)  SrO 
C)  In2O3
D)  CO2E) None of the above
F) All of the above

Question 12

Choose the best Lewis structure for BF3.

Accepted Answer

A)   3. 
A)     
B)     
C)     
D)     
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B)   3. 
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B)     
C)     
D)     
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C)   3. 
A)     
B)     
C)     
D)     
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D)   3. 
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B)     
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E)   3. 
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G) B) and E)

Question 13

Using periodic trends,place the following bonds in order of decreasing ionic character.
Sb-Cl P-Cl As-Cl

Accepted Answer

A)  Sb-Cl > As-Cl > P-Cl
B)  As-Cl > Sb-Cl > P-Cl
C)  Sb-Cl > P-Cl > As-Cl
D)  P-Cl > As-Cl > Sb-Cl
E)  P-Cl > Sb-Cl > As-ClF) A) and B)
G) A) and C)

Question 14

Describe the difference between a pure covalent bond and a polar covalent bond.

Accepted Answer

A pure covalent bond occurs when bonding...

Question 15

Which of the following represent the Lewis structure for N?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) A) and E)
G) B) and D)

Question 16

Which of the following processes is exothermic?

Accepted Answer

A)  the second ionization energy of Mg
B)  the sublimation of Li
C)  the breaking the bond of I2
D)  the formation of NaBr from its constituent elements in their standard state
E)  None of the above are exothermic.F) C) and D)
G) B) and C)

Question 17

Choose the compound below that should have the lowest melting point according to the ionic bonding model.

Accepted Answer

A)  LiF
B)  NaCl
C)  CsI
D)  KBr
E)  RbIF) None of the above
G) B) and C)

Question 18

Choose the best Lewis structure for SO42⁻.

Accepted Answer

A)   42⁻. 
A)     
B)     
C)     
D)     
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B)   42⁻. 
A)     
B)     
C)     
D)     
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C)   42⁻. 
A)     
B)     
C)     
D)     
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D)   42⁻. 
A)     
B)     
C)     
D)     
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E)   42⁻. 
A)     
B)     
C)     
D)     
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G) C) and D)

Question 19

Describe a covalent bond.

Accepted Answer

A bond for...

Question 20

Using Lewis structures and formal charge,which of the following ions is most stable?
OCN⁻ ONC⁻ NOC⁻

Accepted Answer

A)  OCN⁻
B)  ONC⁻
C)  NOC⁻
D)  None of these ions are stable according to Lewis theory.
E)  All of these compounds are equally stable according to Lewis theory.F) B) and E)
G) C) and D)

Exam 9: Chemical Bonding I: Lewis Theory

In the Lewis structure of CH3OH,how many lone pairs of electrons are there?

Correct AnswerverifiedShow Answer

Which has the highest meting point?

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Using periodic trends,place the following bonds in order of decreasing ionic character. Sb-Cl P-Cl As-Cl

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Which of the following represent the Lewis structure for Cl?

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Which of the following ionic compounds would be expected to have the highest lattice energy?

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Choose the bond below that is most polar.

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Which of the following represent the Lewis structure for N?

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Choose the compound below that should have the lowest melting point according to the ionic bonding model.

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Using the data predict the lattice energy of NaCl

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Which ionic compound would be expected to have the highest lattice energy?

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Which molecule or compound below contains a polar covalent bond?

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Draw the Lewis structure for NO2⁻ including any valid resonance structures.Which of the following statements is true?

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Describe the difference between a pure covalent bond and a polar covalent bond.

Correct AnswerverifiedA pure covalent bond occurs when bonding...View AnswerShow Answer

Which of the following processes is exothermic?

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Which of the following reactions is associated with the lattice energy of CaS (ΔH°latt) ?

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Choose the best Lewis structure for SO42⁻.

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Using Lewis structures and formal charge,which of the following ions is most stable? OCN⁻ ONC⁻ NOC⁻

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Predict the formula of an ionic compound between aluminum and oxygen.

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Describe a covalent bond.

Correct AnswerverifiedA bond for...View AnswerShow Answer

Choose the best Lewis structure for BF3.

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In the Lewis structure of CH₃OH,how many lone pairs of electrons are there?

Correct Answer
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Draw the Lewis structure for NO₂⁻ including any valid resonance structures.Which of the following statements is true?

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A pure covalent bond occurs when bonding...
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Which of the following reactions is associated with the lattice energy of CaS (ΔH°_latt) ?

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Choose the best Lewis structure for SO₄²⁻.

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A bond for...
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Choose the best Lewis structure for BF₃.

Correct Answer
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