Question 1

How many dots does the Lewis dot symbol for sodium have around it?

Accepted Answer

A)  1
B)  2
C)  0
D)  3
E)  7F) B) and C)
G) All of the above

Question 2

In which of the following species does the central atom violate the octet rule?

Accepted Answer

A)  CH4
B)  SF4
C)  PCl4+
D)  CCl3+
E)  NH3F) None of the above
G) A) and D)

Question 3

Ionic compounds may carry a net positive or net negative charge.

Accepted Answer

A) True 
 B)False

Question 4

Describe,with appropriate explanations,the key factors which affect the magnitude of the lattice energy of an ionic substance.

Accepted Answer

By Coulomb's law,the energy of two elect...

Question 5

A triple bond arises when two atoms share ___________ pairs of electrons.

Accepted Answer

The answer of A triple bond arises when two atoms...

Question 6

Which of the following represents the most polar bond?

Accepted Answer

A)  B-C
B)  S-O
C)  C-O
D)  B-O
E)  C-CF) A) and C)
G) A) and B)

Question 7

A double bond cannot exist between a carbon atom and an oxygen atom.

Accepted Answer

A) True 
 B)False

Question 8

The Lewis dot symbol consists of the symbol for the element surrounded by dot(s) .What does the dot or dots represent?

Accepted Answer

A)  Electron configuration
B)  Valence electrons
C)  Atomic number
D)  Atomic mass
E)  Core electronsF) A) and B)
G) D) and E)

Question 9

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) C) and E)
G) B) and C)

Question 10

All of the following molecules contain only single bonds except

Accepted Answer

A)  H2O2.
B)  Cl2.
C)  CH4.
D)  H2O.
E)  SO2.F) A) and C)
G) B) and D) E

Question 11

The number of resonance structures for the nitrate ion that satisfy the octet rule is

Accepted Answer

A)  1.
B)  2.
C)  3.
D)  4.
E)  none of theseF) C) and D)
G) B) and E) C

Question 12

How many single bonds are bonded to sulfur in SF6?

Accepted Answer

A)  2
B)  4
C)  6
D)  7
E)  8F) None of the above
G) A) and D)

Question 13

How many dots does the Lewis dot symbol for chlorine have around it?

Accepted Answer

A)  1
B)  2
C)  5
D)  7
E)  17F) A) and B)
G) A) and C)

Question 14

Which one of the following Lewis structures is definitely incorrect?

Accepted Answer

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

Question 15

What is the formal charge on phosphorus in a Lewis structure for the phosphate ion that satisfies the octet rule?

Accepted Answer

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

Question 16

Identify the correct equation to calculate the formal charge on an atom.

Accepted Answer

A)  formal charge = valence electrons - lone pair electrons
B)  formal charge = valence electrons - associated electrons
C)  formal charge = valence electrons - bonding electrons
D)  formal charge = bonding electrons + lone pair electrons
E)  formal charge = valence electrons - bonding electrons + lone pair electronsF) B) and E)
G) A) and B)

Question 17

In which one of the following structures does the central atom have a formal charge of +2?

Accepted Answer

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

Question 18

Describe in brief how electronegativity values can be used to predict the percent ionic character of a bond between two atoms.

Accepted Answer

Take the electronegativity difference (Δ...

Question 19

In the following Lewis structure for ClO3F,chlorine has a formal charge of ____ and an oxidation number of ____. 3F,chlorine has a formal charge of ____ and an oxidation number of ____.   A) 7,7 B) 7,-1 C) 1,1 D) 1,-1 E) 1,7" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  7,7
B)  7,-1
C)  1,1
D)  1,-1
E)  1,7F) A) and D)
G) C) and E)

Question 20

What is the formal charge on the fluorine in ClF2+?

Accepted Answer

A)  -1
B)  +1
C)  0
D)  -2
E)  -3F) B) and C)
G) A) and E)

Exam 8: Chemical Bonding I Basic Concepts

How many dots does the Lewis dot symbol for sodium have around it?

Correct AnswerverifiedShow Answer

In which of the following species does the central atom violate the octet rule?

Correct AnswerverifiedShow Answer

Ionic compounds may carry a net positive or net negative charge.

Correct AnswerverifiedShow Answer

Describe,with appropriate explanations,the key factors which affect the magnitude of the lattice energy of an ionic substance.

Correct AnswerverifiedBy Coulomb's law,the energy of two elect...View AnswerShow Answer

A triple bond arises when two atoms share ___________ pairs of electrons.

Correct AnswerverifiedShow Answer

Which of the following represents the most polar bond?

Correct AnswerverifiedShow Answer

A double bond cannot exist between a carbon atom and an oxygen atom.

Correct AnswerverifiedShow Answer

The Lewis dot symbol consists of the symbol for the element surrounded by dot(s) .What does the dot or dots represent?

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

All of the following molecules contain only single bonds except

Correct AnswerverifiedE

The number of resonance structures for the nitrate ion that satisfy the octet rule is

Correct AnswerverifiedC

How many single bonds are bonded to sulfur in SF6?

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How many dots does the Lewis dot symbol for chlorine have around it?

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Which one of the following Lewis structures is definitely incorrect?

Correct AnswerverifiedShow Answer

What is the formal charge on phosphorus in a Lewis structure for the phosphate ion that satisfies the octet rule?

Correct AnswerverifiedD

Identify the correct equation to calculate the formal charge on an atom.

Correct AnswerverifiedShow Answer

In which one of the following structures does the central atom have a formal charge of +2?

Correct AnswerverifiedShow Answer

Describe in brief how electronegativity values can be used to predict the percent ionic character of a bond between two atoms.

Correct AnswerverifiedTake the electronegativity difference (Δ...View AnswerShow Answer

In the following Lewis structure for ClO3F,chlorine has a formal charge of ____ and an oxidation number of ____.

Correct AnswerverifiedShow Answer

What is the formal charge on the fluorine in ClF2+?

Correct AnswerverifiedShow Answer

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By Coulomb's law,the energy of two elect...
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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

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E

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C

How many single bonds are bonded to sulfur in SF₆?

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D

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Take the electronegativity difference (Δ...
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In the following Lewis structure for ClO₃F,chlorine has a formal charge of and an oxidation number of .

Correct Answer
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What is the formal charge on the fluorine in ClF₂⁺?

Correct Answer
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