Question 1

Rank the following in order of decreasing importance as a contributing resonance structure to the molecular structure of acetone, CH3COCH3 (more important > less important)  3COCH3 (more important > less important)    A)  1 > 2 > 3 B)  1 > 3 > 2 C)  2 > 1 > 3 D)  3 > 1 > 2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   1 > 2 > 3
B)   1 > 3 > 2
C)   2 > 1 > 3
D)   3 > 1 > 2E) A) and D)
F) A) and C)

Question 2

Which of the following elements has the highest electronegativity?

Accepted Answer

A)   N
B)   C
C)   O
D)   SE) A) and D)
F) B) and C) C

Question 3

Which of the following is a primary (1°)  alcohol?  OHO∣∣∣CH3CH2CH2OHCH3CHCH3CH3CH2OCH3CH3CH2CH1234\begin{array}{cccc}&\mathrm{OH}&&\mathrm{O}\&|&&||\\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}&\mathrm{CH}_{3} \mathrm{CHCH}_{3}&\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OCH}_{3}&\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}\1&2&3&4\end{array}CH3​CH2​CH2​OH1​OH∣CH3​CHCH3​2​CH3​CH2​OCH3​3​O∣∣CH3​CH2​CH4​

Accepted Answer

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

Question 4

How many resonating structures are shown by aniline?

Accepted Answer

A)   3
B)   4
C)   5
D)   6E) C) and D)
F) B) and D)

Question 5

What is the ground-state electronic configuration of a fluoride anion (fluorine: atomic number 9) ?

Accepted Answer

A)   1s22s22p2
B)   1s22s22p5
C)   1s22s22p6
D)   1s22s22p7E) B) and D)
F) B) and C)

Question 6

Which of the following species has an atom that has an unfilled valence shell of electrons?

Accepted Answer

A)   molecular bromine, Br2
B)   fluoride anion, F−
C)   ammonia, NH3
D)   aluminum trichloride, AlCl3E) C) and D)
F) A) and C)

Question 7

Which of the following compounds is an alcohol?

Accepted Answer

A)   CH3CH2COOH
B)   CH3CH2OCH3
C)   CH3CH2CH2OH
D)   CH3CH2CHOE) B) and C)
F) A) and D)

Question 8

Which of the following bonds is the most polar?

Accepted Answer

A)   F−F
B)   H−F
C)   C−H
D)   C−SiE) A) and B)
F) A) and C)

Question 9

Different compounds with the same molecular formula are called __________.

Accepted Answer

The answer of Different compounds with the same molecular formula...

Question 10

Which of the following compounds is an aldehyde?

Accepted Answer

A)   CH3CH2CH2COOH
B)   CH3CH2CHO
C)   CH3CH2CH2OH
D)   CH3CH2COCH3E) B) and D)
F) B) and C)

Question 11

The maximum number of electrons that a molecular orbital can contain is four.

Accepted Answer

A) True 
 B)False  False

Question 12

Which atomic orbitals overlap to form the carbon-hydrogen σ bonding molecular orbitals of ethyne, HC≡CH?

Accepted Answer

A)   C2p + H1s
B)   C2sp + H1s
C)   C2sp2 + H1s
D)   C2sp3 + H1sE) B) and C)
F) A) and D)

Question 13

Which of the following statements is not true about the carbonate anion, CO32−?

Accepted Answer

A)   All of the oxygen atoms bear the same amount of charge
B)   All of the carbon-oxygen bonds are the same length
C)   The carbon atom bears the negative charge
D)   It is basicE) A) and B)
F) A) and C) C

Question 14

The curved arrows in the resonance structure for the acetate ion shown below  indicate the following alternative resonance structure for the acetate ion.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is an ionic bond?

Accepted Answer

A)   F−F
B)   C−H
C)   Li−O
D)   C−NE) A) and D)
F) B) and D)

Question 16

The most electronegative elements in the periodic table are generally found toward the right in a horizontal row and toward the top in a column.

Accepted Answer

A) True 
 B)False

Question 17

Draw bond-line structures of all of the secondary (2°) amines that have the formula C4H9N.

Accepted Answer

Question 18

Which of the following is an carboxylic ester?

Accepted Answer

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

Question 19

How many electrons are there in the valence shell of the oxygen atom of water?

Accepted Answer

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

Question 20

There are eight valence in a methyl anion, CH3−.

Accepted Answer

A) True 
 B)False

Exam 1: Covalent Bonding and Shapes of Molecules

Rank the following in order of decreasing importance as a contributing resonance structure to the molecular structure of acetone, CH₃COCH₃ (more important > less important)

Correct Answer
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Which of the following elements has the highest electronegativity?

Correct Answer
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C

Correct Answer
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How many resonating structures are shown by aniline?

Correct Answer
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What is the ground-state electronic configuration of a fluoride anion (fluorine: atomic number 9) ?

Correct Answer
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Which of the following species has an atom that has an unfilled valence shell of electrons?

Correct Answer
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Which of the following compounds is an alcohol?

Correct Answer
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Which of the following bonds is the most polar?

Correct Answer
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Different compounds with the same molecular formula are called __________.

Correct Answer
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Which of the following compounds is an aldehyde?

Correct Answer
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The maximum number of electrons that a molecular orbital can contain is four.

Correct Answer
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False

Which atomic orbitals overlap to form the carbon-hydrogen σ bonding molecular orbitals of ethyne, HC≡CH?

Correct Answer
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Which of the following statements is not true about the carbonate anion, CO₃²⁻?

Correct Answer
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C

The curved arrows in the resonance structure for the acetate ion shown below indicate the following alternative resonance structure for the acetate ion.

Correct Answer
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Which of the following is an ionic bond?

Correct Answer
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The most electronegative elements in the periodic table are generally found toward the right in a horizontal row and toward the top in a column.

Correct Answer
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Draw bond-line structures of all of the secondary (2°) amines that have the formula C₄H₉N.

Correct Answer
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Which of the following is an carboxylic ester?

Correct Answer
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How many electrons are there in the valence shell of the oxygen atom of water?

Correct Answer
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There are eight valence in a methyl anion, CH₃−.

Correct Answer
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Exam 1: Covalent Bonding and Shapes of Molecules

Rank the following in order of decreasing importance as a contributing resonance structure to the molecular structure of acetone, CH3COCH3 (more important > less important)

Correct AnswerverifiedShow Answer

Which of the following elements has the highest electronegativity?

Correct AnswerverifiedC

Correct AnswerverifiedShow Answer

How many resonating structures are shown by aniline?

Correct AnswerverifiedShow Answer

What is the ground-state electronic configuration of a fluoride anion (fluorine: atomic number 9) ?

Correct AnswerverifiedShow Answer

Which of the following species has an atom that has an unfilled valence shell of electrons?

Correct AnswerverifiedShow Answer

Which of the following compounds is an alcohol?

Correct AnswerverifiedShow Answer

Which of the following bonds is the most polar?

Correct AnswerverifiedShow Answer

Different compounds with the same molecular formula are called __________.

Correct AnswerverifiedShow Answer

Which of the following compounds is an aldehyde?

Correct AnswerverifiedShow Answer

The maximum number of electrons that a molecular orbital can contain is four.

Correct AnswerverifiedFalse

Which atomic orbitals overlap to form the carbon-hydrogen σ bonding molecular orbitals of ethyne, HC≡CH?

Correct AnswerverifiedShow Answer

Which of the following statements is not true about the carbonate anion, CO32−?

Correct AnswerverifiedC

The curved arrows in the resonance structure for the acetate ion shown below indicate the following alternative resonance structure for the acetate ion.

Correct AnswerverifiedShow Answer

Which of the following is an ionic bond?

Correct AnswerverifiedShow Answer

The most electronegative elements in the periodic table are generally found toward the right in a horizontal row and toward the top in a column.

Correct AnswerverifiedShow Answer

Draw bond-line structures of all of the secondary (2°) amines that have the formula C4H9N.

Correct AnswerverifiedShow Answer

Which of the following is an carboxylic ester?

Correct AnswerverifiedShow Answer

How many electrons are there in the valence shell of the oxygen atom of water?

Correct AnswerverifiedShow Answer

There are eight valence in a methyl anion, CH3−.

Correct AnswerverifiedShow Answer

Rank the following in order of decreasing importance as a contributing resonance structure to the molecular structure of acetone, CH₃COCH₃ (more important > less important)

Correct Answer
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C

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False

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Which of the following statements is not true about the carbonate anion, CO₃²⁻?

Correct Answer
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C

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Draw bond-line structures of all of the secondary (2°) amines that have the formula C₄H₉N.

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There are eight valence in a methyl anion, CH₃−.

Correct Answer
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