Question 1

What formal charge resides on the carbon of CO32-?

Accepted Answer

A)   0
B)   +1
C)   +2
D)   +3
E)   +4F) B) and C)
G) B) and E)

Question 2

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) None of the above
G) A) and B)

Question 3

What is wrong with this Lewis structure?

Accepted Answer

A)   There are too many electrons.
B)   There are too few electrons.
C)   The O atom does not have an octet.
D)   The C atom does not have an octet.
E)   There is nothing wrong with this Lewis structure.F) C) and D)
G) D) and E)

Question 4

Based on ionic radii and charges, which of the following solids would have the greatest lattice energy?

Accepted Answer

A)   SrO
B)   CsI
C)   MgCl2
D)   KF
E)   NaFF) A) and E)
G) A) and D)

Question 5

When an alkali metal combines with a nonmetal, a covalent bond is normally formed.

Accepted Answer

A) True 
 B)False

Question 6

How many single bonds are bonded to sulfur in SF6?

Accepted Answer

A)   2
B)   4
C)   6
D)   7
E)   8F) D) and E)
G) A) and B)

Question 7

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 elec...

Question 8

The total number of bonding electrons in a molecule of formaldehyde (H2CO)  is

Accepted Answer

A)   3.
B)   4.
C)   6.
D)   8.
E)   18.F) All of the above
G) A) and C)

Question 9

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) A) and B)
G) A) and E)

Question 10

Which of the following is a covalent compound?

Accepted Answer

A)   Na2O
B)   CaCl2
C)   Cl2O
D)   CsCl
E)   Al2O3F) C) and D)
G) A) and C)

Question 11

The number of dots in the Lewis dot symbol for a main group element is the same as the ________.

Accepted Answer

The answer of The number of dots in the Lewis...

Question 12

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) A) and D)
G) C) and E)

Question 13

Which response includes all the molecules below that have a central atom that does 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 C)
G) C) and D) A

Question 14

________ of atoms interact to form compounds.

Accepted Answer

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

Question 15

In the best Lewis structure for the fulminate ion, CNO-, what is the formal charge on the central nitrogen atom?

Accepted Answer

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

Question 16

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

Accepted Answer

A)   1
B)   2
C)   4
D)   10
E)   8F) All of the above
G) A) and B) E

Question 17

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 B)
G) A) and D)

Question 18

Select the element whose Lewis symbol is correct.

Accepted Answer

A)   •Ga•
B)   
C)   Al•
D)   E) A) and D)
F) A) and C)

Question 19

The Lewis dot symbol for the S2- ion is

Accepted Answer

A)   2- ion is 
A)     
B)     
C)   S2- 
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
B)   2- ion is 
A)     
B)     
C)   S2- 
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
C)   S2-
D)   2- ion is 
A)     
B)     
C)   S2- 
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
E)   2- ion is 
A)     
B)     
C)   S2- 
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >F) A) and B)
G) A) and C)

Question 20

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 B)
G) A) and C) D

Exam 8: Chemical Bonding I: Basic Concepts

What formal charge resides on the carbon of CO32-?

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

What is wrong with this Lewis structure?

Correct AnswerverifiedShow Answer

Based on ionic radii and charges, which of the following solids would have the greatest lattice energy?

Correct AnswerverifiedShow Answer

When an alkali metal combines with a nonmetal, a covalent bond is normally formed.

Correct AnswerverifiedShow Answer

How many single bonds are bonded to sulfur in SF6?

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 elec...View AnswerShow Answer

The total number of bonding electrons in a molecule of formaldehyde (H2CO) is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is a covalent compound?

Correct AnswerverifiedShow Answer

The number of dots in the Lewis dot symbol for a main group element is the same as the ________.

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

Which response includes all the molecules below that have a central atom that does not follow the octet rule? (1) H2S, (2) BCl3, (3) PH3, (4) SF4

Correct AnswerverifiedA

________ of atoms interact to form compounds.

Correct AnswerverifiedShow Answer

In the best Lewis structure for the fulminate ion, CNO-, what is the formal charge on the central nitrogen atom?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedE

Which of the following represents the most polar bond?

Correct AnswerverifiedShow Answer

Select the element whose Lewis symbol is correct.

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The Lewis dot symbol for the S2- ion is

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

Correct AnswerverifiedD

What formal charge resides on the carbon of CO₃^2-?

Correct Answer
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How many single bonds are bonded to sulfur in SF₆?

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By Coulomb's law, the energy of two elec...
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The total number of bonding electrons in a molecule of formaldehyde (H₂CO) is

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Which response includes all the molecules below that have a central atom that does not follow the octet rule? (1) H₂S, (2) BCl_3, (3) PH_3, (4) SF₄

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A

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In the best Lewis structure for the fulminate ion, CNO^-, what is the formal charge on the central nitrogen atom?

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E

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The Lewis dot symbol for the S^2- ion is

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D