Question 1

The polarity of covalent bonds increases as the percent ionic character increases.

Accepted Answer

A) True 
 B)False

Question 2

In the Lewis structure of the iodate ion, IO3-, that satisfies the octet rule, the formal charge on the central iodine atom is

Accepted Answer

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

Question 3

Which response includes all the molecules below that do not follow the octet rule? (1) H2S (2) BCl3 (3) PH3 (4) SF4

Accepted Answer

A)  (2) and (4) 
B)  (2) and (3) 
C)  (1) and (2) 
D)  (3) and (4) 
E)  (1) and (4) F) A) and E)
G) D) and E)

Question 4

Consider the hypothetical element Y with electron-dot formula  Give the formula for the simplest compound this element forms with chlorine.

Accepted Answer

The answer of Consider the hypothetical element Y with electron-dot...

Question 5

The Lewis dot symbol for the chloride ion is

Accepted Answer

A)   - 
C)     - 
D)     - 
E)  Cl-" class="answers-bank-image d-inline" rel="preload" >
B)   - 
C)     - 
D)     - 
E)  Cl-" class="answers-bank-image d-inline" rel="preload" > -
C)   - 
C)     - 
D)     - 
E)  Cl-" class="answers-bank-image d-inline" rel="preload" > -
D)   - 
C)     - 
D)     - 
E)  Cl-" class="answers-bank-image d-inline" rel="preload" > -
E)  Cl-F) A) and E)
G) D) and E)

Question 6

Which molecule has a Lewis structure that does not obey the octet rule?

Accepted Answer

A)  N2O
B)  CS2
C)  PH3
D)  CCl4
E)  NO2F) A) and B)
G) None of the above

Question 7

Complete this statement: Coulomb's law states that the magnitude of the force of interaction between two charged bodies is

Accepted Answer

A)  directly proportional to the product of the charges on the bodies and directly proportional to the distance separating them.
B)  directly proportional to the product of the charges on the bodies, and inversely proportional to the square of the distance separating them.
C)  inversely proportional to the product of the charges on the bodies, and directly proportional to the square of the distance separating them.
D)  directly proportional to the sum of the charges on the bodies, and inversely proportional to the square of the distance separating them.E) A) and C)
F) A) and D)

Question 8

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

Accepted Answer

A)  NaCl
B)  NaF
C)  CaBr2
D)  CsI
E)  CaCl2F) None of the above
G) A) and D)

Question 9

The electron dot formula for O2 shows

Accepted Answer

A)  a single covalent bond.
B)  a double covalent bond.
C)  an ionic bond.
D)  a total of 8 x 2 = 16 electron dots.
E)  a total of 32 electron dots.F) All of the above
G) A) and B)

Question 10

Write a Lewis structure for the chlorate ion, ClO3-, that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s).

Accepted Answer

Question 11

The formal charge on the bromine atom in BrO3-  drawn with three single bonds is

Accepted Answer

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

Question 12

Of the following substances, KCl, KBr, and KF, KF will have the highest melting point.

Accepted Answer

A) True 
 B)False

Question 13

Write a Lewis structure for OF2.

Accepted Answer

Question 14

Use the bond enthalpy data given to estimate the heat released when 25.0 g of acetylene gas, C2H2, burns in excess oxygen to yield carbon dioxide and water vapor at 25°C. BE(C-C) = 347 kJ/mol
BE(C ≡\equiv≡ C) = 812 kJ/mol
BE(C=O in CO2) = 799 kJ/mol
BE(C-H) = 414 kJ/mol
BE(O-H) = 460 kJ/mol
BE(O=O) = 498.7 kJ/mol

Accepted Answer

A)  1180 kJ
B)  447 kJ
C)  364 kJ
D)  1230 kJ
E)  16.8 kJ F) B) and E)
G) A) and C)

Question 15

Write the chemical equation for which the enthalpy of reaction is the lattice energy of KCl(s).

Accepted Answer

KCl(s)<img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30"> K<s...

Question 16

The Lewis dot symbol for the a lead atom is

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) All of the above
G) A) and C)

Question 17

Each of the three resonance structures of NO3- has how many lone pairs of electrons?

Accepted Answer

A)  7
B)  8
C)  9
D)  10
E)  13F) None of the above
G) B) and C)

Question 18

Use the bond enthalpy data given to estimate the heat released when 50.0 g of propane gas, C3H8, burns in excess oxygen to yield carbon dioxide and water vapor at 25°C. BE(C-C) = 347 kJ/mol
BE(C=O in CO2) = 799 kJ/mol
BE(C-H) = 414 kJ/mol
BE(O-H) = 460 kJ/mol
BE(O=O) = 498.7 kJ/mol

Accepted Answer

A)  1360 kJ
B)  2240 kJ
C)  2370 kJ
D)  1540 kJ
E)  1970 kJF) A) and E)
G) A) and D)

Question 19

The number of lone electron pairs in the CO32- ion is ___.

Accepted Answer

A)  4
B)  5
C)  6
D)  7
E)  8F) All of the above
G) B) and D)

Question 20

Write a Lewis structure for the phosphate ion, PO43-, that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s).

Accepted Answer

Exam 9: Chemical Bonding I: the Covalent Bond

The Lewis dot symbol for the a lead atom is

Correct Answer
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Write the chemical equation for which the enthalpy of reaction is the lattice energy of KCl(s).

Correct Answer
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KCl(s) K
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The polarity of covalent bonds increases as the percent ionic character increases.

Correct Answer
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Each of the three resonance structures of NO₃^-has how many lone pairs of electrons?

Correct Answer
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Of the following substances, KCl, KBr, and KF, KF will have the highest melting point.

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

Correct Answer
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The electron dot formula for O₂ shows

Correct Answer
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The Lewis dot symbol for the chloride ion is

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Which molecule has a Lewis structure that does not obey the octet rule?

Correct Answer
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Complete this statement: Coulomb's law states that the magnitude of the force of interaction between two charged bodies is

Correct Answer
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Consider the hypothetical element Y with electron-dot formula Give the formula for the simplest compound this element forms with chlorine.

Correct Answer
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Write a Lewis structure for the chlorate ion, ClO₃^-, 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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The formal charge on the bromine atom in BrO₃^- drawn with three single bonds is

Correct Answer
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Which response includes all the molecules below that do not follow the octet rule? (1) H₂S (2) BCl₃ (3) PH₃ (4) SF₄

Correct Answer
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Write a Lewis structure for the phosphate ion, PO₄^3-, 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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Use the bond enthalpy data given to estimate the heat released when 50.0 g of propane gas, C₃H₈, burns in excess oxygen to yield carbon dioxide and water vapor at 25°C. BE(C-C) = 347 kJ/mol BE(C=O in CO₂) = 799 kJ/mol BE(C-H) = 414 kJ/mol BE(O-H) = 460 kJ/mol BE(O=O) = 498.7 kJ/mol

Correct Answer
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Write a Lewis structure for OF₂.

Correct Answer
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In the Lewis structure of the iodate ion, IO₃^-, that satisfies the octet rule, the formal charge on the central iodine atom is

Correct Answer
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The number of lone electron pairs in the CO₃^2- ion is ___.

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

The Lewis dot symbol for the a lead atom is

Correct AnswerverifiedShow Answer

Write the chemical equation for which the enthalpy of reaction is the lattice energy of KCl(s).

Correct AnswerverifiedKCl(s) KView AnswerShow Answer

The polarity of covalent bonds increases as the percent ionic character increases.

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Each of the three resonance structures of NO3- has how many lone pairs of electrons?

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Of the following substances, KCl, KBr, and KF, KF will have the highest melting point.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The electron dot formula for O2 shows

Correct AnswerverifiedShow Answer

The Lewis dot symbol for the chloride ion is

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Which molecule has a Lewis structure that does not obey the octet rule?

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Complete this statement: Coulomb's law states that the magnitude of the force of interaction between two charged bodies is

Correct AnswerverifiedShow Answer

Consider the hypothetical element Y with electron-dot formula Give the formula for the simplest compound this element forms with chlorine.

Correct AnswerverifiedShow Answer

Write a Lewis structure for the chlorate ion, ClO3-, 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 formal charge on the bromine atom in BrO3- drawn with three single bonds is

Correct AnswerverifiedShow Answer

Which response includes all the molecules below that do not follow the octet rule? (1) H2S (2) BCl3 (3) PH3 (4) SF4

Correct AnswerverifiedShow Answer

Write a Lewis structure for the phosphate ion, PO43-, that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s).

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Use the bond enthalpy data given to estimate the heat released when 50.0 g of propane gas, C3H8, burns in excess oxygen to yield carbon dioxide and water vapor at 25°C. BE(C-C) = 347 kJ/mol BE(C=O in CO2) = 799 kJ/mol BE(C-H) = 414 kJ/mol BE(O-H) = 460 kJ/mol BE(O=O) = 498.7 kJ/mol

Correct AnswerverifiedShow Answer

Write a Lewis structure for OF2.

Correct AnswerverifiedShow Answer

In the Lewis structure of the iodate ion, IO3-, that satisfies the octet rule, the formal charge on the central iodine atom is

Correct AnswerverifiedShow Answer

The number of lone electron pairs in the CO32- ion is ___.

Correct AnswerverifiedShow Answer

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KCl(s) K
View Answer

Correct Answer
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Each of the three resonance structures of NO₃^-has how many lone pairs of electrons?

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Correct Answer
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The electron dot formula for O₂ shows

Correct Answer
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Write a Lewis structure for the chlorate ion, ClO₃^-, 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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The formal charge on the bromine atom in BrO₃^- drawn with three single bonds is

Correct Answer
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Which response includes all the molecules below that do not follow the octet rule? (1) H₂S (2) BCl₃ (3) PH₃ (4) SF₄

Correct Answer
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Write a Lewis structure for the phosphate ion, PO₄^3-, 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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Use the bond enthalpy data given to estimate the heat released when 50.0 g of propane gas, C₃H₈, burns in excess oxygen to yield carbon dioxide and water vapor at 25°C. BE(C-C) = 347 kJ/mol BE(C=O in CO₂) = 799 kJ/mol BE(C-H) = 414 kJ/mol BE(O-H) = 460 kJ/mol BE(O=O) = 498.7 kJ/mol

Correct Answer
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Write a Lewis structure for OF₂.

Correct Answer
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In the Lewis structure of the iodate ion, IO₃^-, that satisfies the octet rule, the formal charge on the central iodine atom is

Correct Answer
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The number of lone electron pairs in the CO₃^2- ion is ___.

Correct Answer
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