Question 1

Consider the hypothetical element X 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 X with electron-dot...

Question 2

The bond in which one of the following pairs of atoms would be the most polar?

Accepted Answer

A)  B - C
B)  C - N
C)  C - O
D)  Si - O
E)  C - C

Question 3

Assuming the octet rule is obeyed, how many covalent bonds will an oxygen atom form to give a formal charge of zero?

Accepted Answer

A)  0
B)  1
C)  2
D)  3
E)  4

Question 4

The number of lone electron pairs in the N2 molecule is ___.

Accepted Answer

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

Question 5

BeF42- is called the fluoberyllate ion. The formal charge on the beryllium atom in this ion is

Accepted Answer

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

Question 6

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

Accepted Answer

A)  CO2
B)  Cl2
C)  ICl
D)  NO
E)  SO2

Question 7

Classify the Ca - Cl bond in CaCl2 as ionic, polar covalent, or nonpolar covalent.

Accepted Answer

A)  ionic
B)  polar covalent
C)  nonpolar covalent

Question 8

Which one of the following is most likely to be an ionic compound?

Accepted Answer

A)  CaCl2
B)  CO2
C)  CS2
D)  SO2
E)  OF2

Question 9

Which of the elements listed below is most likely to exhibit an expanded octet in its compounds?

Accepted Answer

A)  O
B)  S
C)  Na
D)  C
E)  N

Question 10

Which of the following is a useful guideline for the application of formal charges in neutral molecules?

Accepted Answer

A)  A Lewis structure in which there are no formal charges is preferred.
B)  Lewis structures with large formal charges are preferred.
C)  The preferred Lewis structure is one in which positive formal charges are on the most electronegative atoms.

Question 11

Consider the hypothetical element Z 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 Z with electron-dot...

Question 12

The Lewis structure for CS2 is:

Accepted Answer

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Question 13

The total number of lone pairs in NCl3 is

Accepted Answer

A)  6.
B)  8.
C)  9.
D)  10.
E)  13.

Question 14

Which one of the following molecules has an atom with an incomplete octet?

Accepted Answer

A)  NF3
B)  H2O
C)  AsCl3
D)  GeH4
E)  BF3

Question 15

Carbonic acid, H2CO3, is a weak acid that contributes to the taste and produces the carbon dioxide bubbles in all carbonated beverages. Write a Lewis structure for H2CO3,

Accepted Answer

Question 16

Write the Lewis structure of ammonia (nitrogen trihydride).

Accepted Answer

The answer of Write the Lewis structure of ammonia (nitrogen...

Question 17

Calculate the energy change for the reaction K(g) + Br(g)  →\rarr→  K+(g) + Br- (g) 
Given the following ionization energy (IE) and electron affinity (EA) values +(g) + Br- (g)  Given the following ionization energy (IE) and electron affinity (EA) values   A) -1,092 kJ/mol B) -95 kJ/mol C) 95 kJ/mol D) 1,092 kJ/mol E) 1,187 kJ/mol " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  -1,092 kJ/mol
B)  -95 kJ/mol
C)  95 kJ/mol
D)  1,092 kJ/mol
E)  1,187 kJ/mol

Question 18

Which of the elements listed below has the greatest electronegativity?

Accepted Answer

A)  Mg
B)  Ga
C)  Si
D)  Ba
E)  Pb

Question 19

Which of the atoms listed below is the most electronegative?

Accepted Answer

A)  Li
B)  Cs
C)  P
D)  As
E)  Ge

Question 20

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 these.

Exam 9: Chemical Bonding I: the Covalent Bond

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

Correct Answer
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Classify the Ca - Cl bond in CaCl₂ as ionic, polar covalent, or nonpolar covalent.

Correct Answer
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Assuming the octet rule is obeyed, how many covalent bonds will an oxygen atom form to give a formal charge of zero?

Correct Answer
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Which of the following substances will display an incomplete octet in its Lewis structure?

Correct Answer
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Which one of the following molecules has an atom with an incomplete octet?

Correct Answer
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Which of the following is a useful guideline for the application of formal charges in neutral molecules?

Correct Answer
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The number of lone electron pairs in the N₂ molecule is ___.

Correct Answer
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Write the Lewis structure of ammonia (nitrogen trihydride).

Correct Answer
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Which of the atoms listed below is the most electronegative?

Correct Answer
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Which of the elements listed below has the greatest electronegativity?

Correct Answer
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Carbonic acid, H₂CO₃, is a weak acid that contributes to the taste and produces the carbon dioxide bubbles in all carbonated beverages. Write a Lewis structure for H₂CO₃,

Correct Answer
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BeF₄^2- is called the fluoberyllate ion. The formal charge on the beryllium atom in this ion is

Correct Answer
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The Lewis structure for CS₂ is:

Correct Answer
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Which one of the following is most likely to be an ionic compound?

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

Correct Answer
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The total number of lone pairs in NCl₃ is

Correct Answer
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Which of the elements listed below is most likely to exhibit an expanded octet in its compounds?

Correct Answer
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The bond in which one of the following pairs of atoms would be the most polar?

Correct Answer
verified

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

Correct Answer
verified

Exam 9: Chemical Bonding I: the Covalent Bond

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

Correct AnswerverifiedShow Answer

Classify the Ca - Cl bond in CaCl2 as ionic, polar covalent, or nonpolar covalent.

Correct AnswerverifiedShow Answer

Assuming the octet rule is obeyed, how many covalent bonds will an oxygen atom form to give a formal charge of zero?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which one of the following molecules has an atom with an incomplete octet?

Correct AnswerverifiedShow Answer

Which of the following is a useful guideline for the application of formal charges in neutral molecules?

Correct AnswerverifiedShow Answer

The number of lone electron pairs in the N2 molecule is ___.

Correct AnswerverifiedShow Answer

Write the Lewis structure of ammonia (nitrogen trihydride).

Correct AnswerverifiedShow Answer

Which of the atoms listed below is the most electronegative?

Correct AnswerverifiedShow Answer

Which of the elements listed below has the greatest electronegativity?

Correct AnswerverifiedShow Answer

Calculate the energy change for the reaction K(g) + Br(g) →\rarr→ K+(g) + Br- (g) Given the following ionization energy (IE) and electron affinity (EA) values

Correct AnswerverifiedShow Answer

Carbonic acid, H2CO3, is a weak acid that contributes to the taste and produces the carbon dioxide bubbles in all carbonated beverages. Write a Lewis structure for H2CO3,

Correct AnswerverifiedShow Answer

BeF42- is called the fluoberyllate ion. The formal charge on the beryllium atom in this ion is

Correct AnswerverifiedShow Answer

The Lewis structure for CS2 is:

Correct AnswerverifiedShow Answer

Which one of the following is most likely to be an ionic compound?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The total number of lone pairs in NCl3 is

Correct AnswerverifiedShow Answer

Which of the elements listed below is most likely to exhibit an expanded octet in its compounds?

Correct AnswerverifiedShow Answer

The bond in which one of the following pairs of atoms would be the most polar?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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Classify the Ca - Cl bond in CaCl₂ as ionic, polar covalent, or nonpolar covalent.

Correct Answer
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The number of lone electron pairs in the N₂ molecule is ___.

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Carbonic acid, H₂CO₃, is a weak acid that contributes to the taste and produces the carbon dioxide bubbles in all carbonated beverages. Write a Lewis structure for H₂CO₃,

Correct Answer
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BeF₄^2- is called the fluoberyllate ion. The formal charge on the beryllium atom in this ion is

Correct Answer
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The Lewis structure for CS₂ is:

Correct Answer
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The total number of lone pairs in NCl₃ is

Correct Answer
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