Question 1

Which of the elements listed below has the greatest electronegativity?

Accepted Answer

A)  Mg
B)  Ga
C)  Si
D)  Ba
E)  PbF) A) and B)
G) C) and E)

Question 2

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)  SO2F) A) and E)
G) B) and E)

Question 3

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

Accepted Answer

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

Question 4

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) B) and D)

Question 5

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

Accepted Answer

A)  NF3
B)  H2O
C)  AsCl3
D)  GeH4
E)  BF3F) C) and E)
G) B) and E)

Question 6

Write the Lewis structure of ammonia (nitrogen trihydride).

Accepted Answer

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

Question 7

Write a Lewis structure for the chlorite ion, ClO2-, that obeys the octet rule, showing all non-zero formal charges, and give the total number of resonance structures for ClO2- that obey the octet rule.

Accepted Answer

<img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30"> Total number of res...

Question 8

How many covalent bonds will be drawn to phosphorous in PO43- for the dot structure that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s) .

Accepted Answer

A)  4
B)  5
C)  6
D)  7
E)  8F) A) and E)
G) C) and D)

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)  -2F) D) and E)
G) A) and B)

Question 10

Of the following substances, KCl, KBr, and KF, KF will have the highest melting point.

Accepted Answer

A) True 
 B)False

Question 11

The Lewis dot symbol for the chloride ion is

Accepted Answer

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

Question 12

The bond in which of the following pairs of atoms would have the greatest percent ionic character (i.e., most polar) ?

Accepted Answer

A)  C - O
B)  S - O
C)  Na - I
D)  Na - Br
E)  F - FF) A) and D)
G) B) and E)

Question 13

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)  +2F) A) and C)
G) B) and D)

Question 14

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 15

Which response includes all the molecules below that do 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) All of the above
G) D) and E)

Question 16

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

Accepted Answer

A)  ClF3
B)  FeCl3
C)  NH3
D)  PF3
E)  SO3F) A) and C)
G) A) and E)

Question 17

Write the Lewis dot symbol for the chloride ion.

Accepted Answer

The answer of Write the Lewis dot symbol for the...

Question 18

The number of resonance structures for the sulfur dioxide molecule that satisfy the octet rule is

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  None of theseF) A) and B)
G) None of the above

Question 19

Which one of the following is most likely to be a covalent compound?

Accepted Answer

A)  KF
B)  CaCl2
C)  SF4
D)  Al2O3
E)  CaSO4F) A) and D)
G) B) and C)

Question 20

Of the species NO2, NO, and N2, only NO2 is an exception to the octet rule.

Accepted Answer

A) True 
 B)False

Exam 9: Chemical Bonding I: Basic Concepts

Write the Lewis dot symbol for the chloride ion.

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Write a Lewis structure for the chlorite ion, ClO2-, that obeys the octet rule, showing all non-zero formal charges, and give the total number of resonance structures for ClO2- that obey the octet rule.

Correct Answerverified Total number of res...View AnswerShow Answer

Of the species NO2, NO, and N2, only NO2 is an exception to the octet rule.

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

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Which one of the following is most likely to be a covalent compound?

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The bond in which of the following pairs of atoms would have the greatest percent ionic character (i.e., most polar) ?

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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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Which of the elements listed below has the greatest electronegativity?

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The Lewis dot symbol for the chloride ion is

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Of the following substances, KCl, KBr, and KF, KF will have the highest melting point.

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

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How many covalent bonds will be drawn to phosphorous in PO43- for the dot structure that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s) .

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

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Write the Lewis structure of ammonia (nitrogen trihydride).

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

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

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

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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.

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Which response includes all the molecules below that do not follow the octet rule? (1) H2S (2) BCl3 (3) PH3 (4) SF4

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The number of resonance structures for the sulfur dioxide molecule that satisfy the octet rule is

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Write a Lewis structure for the chlorite ion, ClO₂^-, that obeys the octet rule, showing all non-zero formal charges, and give the total number of resonance structures for ClO₂^- that obey the octet rule.

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Total number of res...
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Of the species NO₂, NO, and N₂, only NO₂ is an exception to the octet rule.

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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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How many covalent bonds will be drawn to phosphorous in PO₄^3- for the dot structure that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s) .

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

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Which response includes all the molecules below that do not follow the octet rule? (1) H₂S (2) BCl₃ (3) PH₃ (4) SF₄

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