Question 1

Three nonequivalent Lewis structures for carbonyl sulfide,SCO,are given below.Use the concepts of formal charge and electronegativity to choose the structure that is the best representation.  A  B  C

Accepted Answer

A)   Structure A,because all the formal charges equal 0
B)   Structure B,because all the formal charges equal 0
C)   Structure C,because all the formal charges equal 0.
D)   Structure A,because the negative formal charge resides on the most electronegative atom
E)   Structure C,because the negative formal charge resides on the most electronegative atom

Question 2

How many different molecules have the molecular formula C6H14?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5

Question 3

Atoms having equal or nearly equal electronegativities are expected to form

Accepted Answer

A)   no bonds
B)   polar covalent bonds
C)   nonpolar covalent bonds
D)   ionic bonds
E)   covalent bonds

Question 4

One resonance structure for OCN- ion is drawn below.What is the formal charge on each atom? - ion is drawn below.What is the formal charge on each atom?   A)  O atom = 0,C atom = 0,and N atom = 0 B)  O atom = 0,C atom = 0,and N atom = -1 C)  O atom = -1,C atom = 0,and N atom = 0 D)  O atom = -1,C atom = -1,and N atom = +1 E)  O atom = +1,C atom = 0,and N atom = -2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   O atom = 0,C atom = 0,and N atom = 0
B)   O atom = 0,C atom = 0,and N atom = -1
C)   O atom = -1,C atom = 0,and N atom = 0
D)   O atom = -1,C atom = -1,and N atom = +1
E)   O atom = +1,C atom = 0,and N atom = -2

Question 5

Which of the following are the correct resonance structures for the formate ion,HCO2-? 2-?   A)  1 and 2 B)  2 and 3 C)  3 and 4 D)  1,3,and 4 E)  2,3,and 4" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   1 and 2
B)   2 and 3
C)   3 and 4
D)   1,3,and 4
E)   2,3,and 4

Question 6

Place the following molecules in order from smallest to largest H−N−H bond angles: NH4+,NH3,and NH2-.

Accepted Answer

A)   NH4+ 3 2-
B)   NH4+ 2- 3
C)   NH2- 3 4+
D)   NH2- 4+ 3
E)   NH3 2- 4+

Question 7

The Lewis structure of which of the following molecules violates the octet rule?

Accepted Answer

A)   SF4
B)   NF3
C)   OF2
D)   HF
E)   SiF4

Question 8

Which of the following is not a valid resonance structure for N3-?

Accepted Answer

A)   3-? 
A)     
B)     
C)     
D)     
E)   all are correct" class="answers-bank-image d-inline" rel="preload" >
B)   3-? 
A)     
B)     
C)     
D)     
E)   all are correct" class="answers-bank-image d-inline" rel="preload" >
C)   3-? 
A)     
B)     
C)     
D)     
E)   all are correct" class="answers-bank-image d-inline" rel="preload" >
D)   3-? 
A)     
B)     
C)     
D)     
E)   all are correct" class="answers-bank-image d-inline" rel="preload" >
E)   all are correct

Question 9

Which of the following pairs of compounds contains ionic bonds?

Accepted Answer

A)   KI and O3
B)   NaF and H2O
C)   PCl5 and HF
D)   Na2SO3 and BH3
E)   RbBr and MgS

Exam 9: Bonding and Molecular Structure

Atoms having equal or nearly equal electronegativities are expected to form

Correct Answer
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Which of the following is not a valid resonance structure for N₃^-?

Correct Answer
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Which of the following pairs of compounds contains ionic bonds?

Correct Answer
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How many different molecules have the molecular formula C₆H₁₄?

Correct Answer
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Which of the following are the correct resonance structures for the formate ion,HCO₂^-?

Correct Answer
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The Lewis structure of which of the following molecules violates the octet rule?

Correct Answer
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One resonance structure for OCN^- ion is drawn below.What is the formal charge on each atom?

Correct Answer
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Place the following molecules in order from smallest to largest H−N−H bond angles: NH₄⁺,NH₃,and NH₂^-.

Correct Answer
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Three nonequivalent Lewis structures for carbonyl sulfide,SCO,are given below.Use the concepts of formal charge and electronegativity to choose the structure that is the best representation. A B C

Correct Answer
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Exam 9: Bonding and Molecular Structure

Atoms having equal or nearly equal electronegativities are expected to form

Correct AnswerverifiedShow Answer

Which of the following is not a valid resonance structure for N3-?

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Which of the following pairs of compounds contains ionic bonds?

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How many different molecules have the molecular formula C6H14?

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Which of the following are the correct resonance structures for the formate ion,HCO2-?

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The Lewis structure of which of the following molecules violates the octet rule?

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One resonance structure for OCN- ion is drawn below.What is the formal charge on each atom?

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Place the following molecules in order from smallest to largest H−N−H bond angles: NH4+,NH3,and NH2-.

Correct AnswerverifiedShow Answer

Three nonequivalent Lewis structures for carbonyl sulfide,SCO,are given below.Use the concepts of formal charge and electronegativity to choose the structure that is the best representation. A B C

Correct AnswerverifiedShow Answer

Correct Answer
verified

Which of the following is not a valid resonance structure for N₃^-?

Correct Answer
verified

Correct Answer
verified

How many different molecules have the molecular formula C₆H₁₄?

Correct Answer
verified

Which of the following are the correct resonance structures for the formate ion,HCO₂^-?

Correct Answer
verified

Correct Answer
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One resonance structure for OCN^- ion is drawn below.What is the formal charge on each atom?

Correct Answer
verified

Place the following molecules in order from smallest to largest H−N−H bond angles: NH₄⁺,NH₃,and NH₂^-.

Correct Answer
verified

Correct Answer
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