Question 1

How many lone pairs of electrons need to be added to complete this Lewis structure?

Accepted Answer

A)  5
B)  8
C)  6
D)  1
E)  16F) B) and C)
G) A) and B)

Question 2

Select the element whose Lewis symbol is correct.

Accepted Answer

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

Question 3

If an element is bonded to 4 other atoms and has a formal charge of +1,what group must the element be in?

Accepted Answer

A)  3A
B)  4A
C)  5A
D)  6A
E)  7AF) None of the above
G) A) and B)

Question 4

The Lewis dot symbol for the calcium ion is

Accepted Answer

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

Question 5

Lewis theorized the octet rule to describe chemical bonding where atoms lose,gain,or share electrons in order to achieve a noble gas configuration.

Accepted Answer

A) True 
 B)False

Question 6

In Ba(CN) 2,the bonding is

Accepted Answer

A)  essentially ionic.
B)  essentially covalent.
C)  both ionic and covalent.
D)  neither ionic nor covalent.E) A) and B)
F) None of the above

Question 7

Which of the following contains covalent bonds?

Accepted Answer

A)  BaO
B)  IBr
C)  Mg
D)  LiBr
E)  CuF) C) and D)
G) B) and D)

Question 8

_____________________ of atoms interact to form compounds.

Accepted Answer

The answer of _____________________ of atoms interact to form compounds....

Question 9

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

Accepted Answer

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

Question 10

Ionic compounds tend to form between metals and nonmetals when electrons are transferred from an element with high ionization energy (metal)to an element with a low electron affinity (nonmetal).

Accepted Answer

A) True 
 B)False

Question 11

Ignoring resonance,the formal charge on the nitrogen atom in the nitrate ion is

Accepted Answer

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

Question 12

Which of these compounds is most likely to be ionic?

Accepted Answer

A)  NCl3
B)  BaCl2
C)  CO
D)  SO2
E)  SF4F) B) and C)
G) C) and D)

Question 13

Which of these molecules has an atom with an expanded octet?

Accepted Answer

A)  HCl
B)  AsCl5
C)  ICl
D)  NCl3
E)  Cl2F) None of the above
G) A) and B)

Question 14

Which of these Lewis structures is incorrect?

Accepted Answer

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

Question 15

Which of these substances will display an incomplete octet in its Lewis structure?

Accepted Answer

A)  CO2
B)  Cl2
C)  ICl
D)  NO
E)  SO2F) A) and E)
G) A) and D)

Question 16

A(n)_____________ is a representation of covalent bonding in which shared electron pairs are shown either as dashes or as pairs of dots between two atoms and unshared electrons are shown as dots around the individual atoms.

Accepted Answer

The answer of A(n)_____________ is a representation of covalent bonding...

Question 17

Which pair of Lewis structures is not a pair of resonance structures?

Accepted Answer

A)   
B)   
C)   
D)  All of these pairs are resonance structures of the same species.
E)  None of these pairs is resonance structures of the same species.F) C) and E)
G) A) and D)

Question 18

Which of these elements is most likely to exhibit an expanded octet in its compounds?

Accepted Answer

A)  O
B)  S
C)  Na
D)  C
E)  NF) A) and E)
G) C) and D)

Question 19

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 D)
G) A) and E)

Question 20

Hydrazine,N2H4,is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure.

Accepted Answer

A)   2H4,is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure. 
A)     
B)     
C)     
D)     
E)  None of the choices is correct." class="answers-bank-image d-inline" rel="preload" >
B)   2H4,is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure. 
A)     
B)     
C)     
D)     
E)  None of the choices is correct." class="answers-bank-image d-inline" rel="preload" >
C)   2H4,is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure. 
A)     
B)     
C)     
D)     
E)  None of the choices is correct." class="answers-bank-image d-inline" rel="preload" >
D)   2H4,is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure. 
A)     
B)     
C)     
D)     
E)  None of the choices is correct." class="answers-bank-image d-inline" rel="preload" >
E)  None of the choices is correct.F) B) and D)
G) A) and D)

Exam 8: Chemical Bonding I Basic Concepts

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

Correct AnswerverifiedShow Answer

If an element is bonded to 4 other atoms and has a formal charge of +1,what group must the element be in?

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Which of these Lewis structures is incorrect?

Correct AnswerverifiedShow Answer

Ignoring resonance,the formal charge on the nitrogen atom in the nitrate ion is

Correct AnswerverifiedShow Answer

Select the element whose Lewis symbol is correct.

Correct AnswerverifiedShow Answer

_____________________ of atoms interact to form compounds.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In Ba(CN) 2,the bonding is

Correct AnswerverifiedShow Answer

Lewis theorized the octet rule to describe chemical bonding where atoms lose,gain,or share electrons in order to achieve a noble gas configuration.

Correct AnswerverifiedShow Answer

Which of these compounds is most likely to be ionic?

Correct AnswerverifiedShow Answer

Which of these substances will display an incomplete octet in its Lewis structure?

Correct AnswerverifiedShow Answer

The Lewis dot symbol for the calcium ion is

Correct AnswerverifiedShow Answer

Which of the following contains covalent bonds?

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Which pair of Lewis structures is not a pair of resonance structures?

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Which of these elements is most likely to exhibit an expanded octet in its compounds?

Correct AnswerverifiedShow Answer

Ionic compounds tend to form between metals and nonmetals when electrons are transferred from an element with high ionization energy (metal)to an element with a low electron affinity (nonmetal).

Correct AnswerverifiedShow Answer

A(n)_____________ is a representation of covalent bonding in which shared electron pairs are shown either as dashes or as pairs of dots between two atoms and unshared electrons are shown as dots around the individual atoms.

Correct AnswerverifiedShow Answer

Hydrazine,N2H4,is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure.

Correct AnswerverifiedShow Answer

Which of these molecules has an atom with an expanded octet?

Correct AnswerverifiedShow Answer

How many lone pairs of electrons need to be added to complete this Lewis structure?

Correct AnswerverifiedShow Answer

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In Ba(CN) ₂,the bonding is

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Hydrazine,N₂H₄,is a good reducing agent that has been used as a component in rocket fuels. Select its Lewis structure.

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