Question 1

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

Accepted Answer

A)  KF
B)  KI
C)  LiF
D)  LiI
E)  NaFF) All of the above
G) C) and D)

Question 2

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

Accepted Answer

A)  Rb2O
B)  BaO
C)  SrO
D)  SeO2
E)  MnO2F) D) and E)
G) C) and D)

Question 3

Use bond energies to estimate the enthalpy change for the reaction of one mole of CH4 with chlorine gas to give CH3Cl and hydrogen chloride. BE(C-H) = 414 kJ/mol
BE(C-Cl) = 326 kJ/mol
BE(H-Cl) = 432 kJ/mol
BE(Cl-Cl) = 243 kJ/mol

Accepted Answer

A)  -101 kJ/mol
B)  -106 kJ/mol
C)  +331 kJ/mol
D)  +106 kJ/mol
E)  +101 kJ/molF) C) and E)
G) B) and E)

Question 4

Which of the following solids would have the lowest melting point?

Accepted Answer

A)  KI
B)  KBr
C)  KCl
D)  KFE) All of the above
F) B) and C)

Question 5

The Lewis dot symbol for the calcium ion is

Accepted Answer

A)   2+ 
B)  (-Ca-)  
C)     2+ 
D)  Ca2+ 
E)  Ca" class="answers-bank-image d-inline" rel="preload" > 2+
B)  (-Ca-) 
C)   2+ 
B)  (-Ca-)  
C)     2+ 
D)  Ca2+ 
E)  Ca" class="answers-bank-image d-inline" rel="preload" > 2+
D)  Ca2+
E)  CaF) B) and C)
G) A) and E)

Question 6

Use bond energies to estimate the enthalpy of formation of HBr(g) . BE(H-H) = 436 kJ/mol
BE(Br-Br) = 192 kJ/mol
BE(H-Br) = 366 kJ/mol

Accepted Answer

A)  +262 kJ/mol
B)  -52 kJ/mol
C)  -104 kJ/mol
D)  +104 kJ/mol
E)  +52 kJ/molF) A) and B)
G) B) and C) B

Question 7

The formal charge on the sulfur atom in the resonance structure of sulfur dioxide which has one single bond and one double bond is

Accepted Answer

A)  0.
B)  +1.
C)  -1.
D)  +2.
E)  -2.F) A) and D)
G) A) and C)

Question 8

Write a Lewis structure for the phosphate ion, PO43-, that obeys the octet rule, showing all non-zero formal charges, and give the total number of resonance structures for PO43- 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 9

What is the formal charge on sulfur in the best Lewis structure for the SCN- (thiocyanate) ion?

Accepted Answer

A)  +2
B)  -2
C)  +1
D)  -1
E)  0F) All of the above
G) A) and B)

Question 10

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

Accepted Answer

A)  KF
B)  CaCl2
C)  SF4
D)  Al2O3
E)  CaSO4F) A) and B)
G) A) and C)

Question 11

What is total number of lone pairs in the best Lewis structure for SOF4 that exceeds the octet rule (S is the central atom) ?

Accepted Answer

A)  0
B)  2
C)  14
D)  16
E)  18F) C) and D)
G) A) and E)

Question 12

Write a Lewis structure for the chlorite ion, ClO2-, that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s).

Accepted Answer

Question 13

The bond in which of the following pairs of atoms would be the least polar (i.e., lowest percent ionic character) ?

Accepted Answer

A)  C - Cl
B)  C - C
C)  C - H
D)  O - C
E)  N - CF) A) and E)
G) A) and D) B

Question 14

Which of the following solids would have the highest melting point?

Accepted Answer

A)  NaF
B)  NaCl
C)  NaBr
D)  NaIE) A) and D)
F) A) and B)

Question 15

Write the Lewis structure for the product that forms when boron trifluoride combines with ammonia.

Accepted Answer

The answer of Write the Lewis structure for the product...

Question 16

The covalent bond with the greatest polarity would form in which of the atom pairs below?

Accepted Answer

A)  Br - Br
B)  S - O
C)  C - P
D)  C - O
E)  B - OF) A) and C)
G) B) and D)

Question 17

What is the formal charge on the singly bonded oxygens in the Lewis structure for the carbonate ion?

Accepted Answer

A)  -2
B)  -1
C)  0
D)  +1
E)  +2F) B) and D)
G) A) and B)

Question 18

A polar covalent bond would form in which one of the following pairs of atoms?

Accepted Answer

A)  Cl - Cl
B)  Si - Si
C)  Ca - Cl
D)  Cr - Br
E)  P - ClF) B) and D)
G) B) and E)

Question 19

Write a Lewis structure for SO3 that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s).

Accepted Answer

Question 20

What type of chemical bond holds the atoms together within a water molecule?

Accepted Answer

A)  Ionic bond
B)  Nonpolar covalent bond
C)  Polar covalent bond
D)  Coordinate covalent bondE) All of the above
F) None of the above

Exam 9: Chemical Bonding I: the Covalent Bond

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Use bond energies to estimate the enthalpy change for the reaction of one mole of CH4 with chlorine gas to give CH3Cl and hydrogen chloride. BE(C-H) = 414 kJ/mol BE(C-Cl) = 326 kJ/mol BE(H-Cl) = 432 kJ/mol BE(Cl-Cl) = 243 kJ/mol

Correct AnswerverifiedShow Answer

Which of the following solids would have the lowest melting point?

Correct AnswerverifiedShow Answer

The Lewis dot symbol for the calcium ion is

Correct AnswerverifiedShow Answer

Use bond energies to estimate the enthalpy of formation of HBr(g) . BE(H-H) = 436 kJ/mol BE(Br-Br) = 192 kJ/mol BE(H-Br) = 366 kJ/mol

Correct AnswerverifiedB

The formal charge on the sulfur atom in the resonance structure of sulfur dioxide which has one single bond and one double bond is

Correct AnswerverifiedShow Answer

Write a Lewis structure for the phosphate ion, PO43-, that obeys the octet rule, showing all non-zero formal charges, and give the total number of resonance structures for PO43- that obey the octet rule.

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

What is the formal charge on sulfur in the best Lewis structure for the SCN- (thiocyanate) ion?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is total number of lone pairs in the best Lewis structure for SOF4 that exceeds the octet rule (S is the central atom) ?

Correct AnswerverifiedShow Answer

Write a Lewis structure for the chlorite ion, ClO2-, that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s).

Correct AnswerverifiedShow Answer

The bond in which of the following pairs of atoms would be the least polar (i.e., lowest percent ionic character) ?

Correct AnswerverifiedB

Which of the following solids would have the highest melting point?

Correct AnswerverifiedShow Answer

Write the Lewis structure for the product that forms when boron trifluoride combines with ammonia.

Correct AnswerverifiedShow Answer

The covalent bond with the greatest polarity would form in which of the atom pairs below?

Correct AnswerverifiedShow Answer

What is the formal charge on the singly bonded oxygens in the Lewis structure for the carbonate ion?

Correct AnswerverifiedShow Answer

A polar covalent bond would form in which one of the following pairs of atoms?

Correct AnswerverifiedShow Answer

Write a Lewis structure for SO3 that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s).

Correct Answerverified11ea7995_662d_ffa3_911b_3d3c5fe78819_TB3244_00

What type of chemical bond holds the atoms together within a water molecule?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Use bond energies to estimate the enthalpy change for the reaction of one mole of CH₄ with chlorine gas to give CH₃Cl and hydrogen chloride. BE(C-H) = 414 kJ/mol BE(C-Cl) = 326 kJ/mol BE(H-Cl) = 432 kJ/mol BE(Cl-Cl) = 243 kJ/mol

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified

Write a Lewis structure for the phosphate ion, PO₄^3-, that obeys the octet rule, showing all non-zero formal charges, and give the total number of resonance structures for PO₄^3- that obey the octet rule.

Correct Answer
verified
Total number of res...
View Answer

What is the formal charge on sulfur in the best Lewis structure for the SCN^- (thiocyanate) ion?

Correct Answer
verified

Correct Answer
verified

What is total number of lone pairs in the best Lewis structure for SOF₄ that exceeds the octet rule (S is the central atom) ?

Correct Answer
verified

Write a Lewis structure for the chlorite ion, ClO₂^-, that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s).

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Write a Lewis structure for SO₃ that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s).

Correct Answer
verified
11ea7995_662d_ffa3_911b_3d3c5fe78819_TB3244_00

Correct Answer
verified