Question 1

Which of the following molecules has a molecular dipole moment?

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) None of the above
F) All of the above

Question 2

Which of the following statements is not true?

Accepted Answer

A)   The sp3C−H bond of an alkane is weaker than the spC−H bond of an alkyne.
B)   The carbon-carbon triple bond of an alkyne is shorter than the carbon-carbon bond of alkenes.
C)   The carbon-carbon triple bond of an alkene is exactly three times as strong as a carbon-carbon single bond of an alkane.
D)   The sp3C−H bond of an alkane is longer than the spC−H bond of an alkyne.E) A) and B)
F) B) and C)

Question 3

Which of the following bonds has the smallest dipole moment?

Accepted Answer

A)   C−N
B)   C−O
C)   C−F
D)   O−HE) A) and D)
F) C) and D)

Question 4

What is the approximate C−C−C bond angle in propyne, HC≡CCH3?

Accepted Answer

A)   90°
B)   109°
C)   120°
D)   180°E) A) and D)
F) B) and D)

Question 5

In drawing the Lewis structure for an organic compound, the carbon atoms should always be shown with eight total electrons.

Accepted Answer

A) True 
 B)False

Question 6

How many electrons are there in the valence shell of the carbon atom of the methyl anion, CH3−?

Accepted Answer

A)   2
B)   4
C)   6
D)   8E) B) and C)
F) All of the above

Question 7

Which of the following bonds is a polar covalent bond?

Accepted Answer

A)   Na−Cl
B)   C−Cl
C)   C−H
D)   Cl−ClE) A) and D)
F) B) and D)

Question 8

Consider the structure of urea given below.  To complete the Lewis structure, six nonbonding electrons should be added, two to each of the nitrogen atoms and two to the oxygen atom.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is a tertiary alcohol?

Accepted Answer

A)   CH3CH2OCH3
B)   (CH3) 3COH
C)   (CH3) 2CHOH
D)   CH3CH2CH2OHE) None of the above
F) B) and C)

Question 10

Which of the following statements is not true about the acetate anion, CH3CO2−?

Accepted Answer

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

Question 11

The following two structural formulas represent isomers. $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2}$
$\quad$$\quad$$\quad$$\quad$|
$\quad$$\quad$$\quad$$\mathrm{CH}_{2} \mathrm{CH}_{3}$ $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CHCH}_{3}$
$\quad$$\quad$$\quad$$\quad$|
$\quad$$\quad$$\quad$$\mathrm{CH}_{2} \mathrm{CH}_{3}$

Accepted Answer

A) True 
 B)False

Question 12

Which of the following best represents an sp2 hybridized atomic orbital of carbon which overlaps with the 1s atomic orbital of hydrogen to form a C−H σ bonding molecular orbital in ethene, H2C=CH2  2 hybridized atomic orbital of carbon which overlaps with the 1s atomic orbital of hydrogen to form a C−H σ bonding molecular orbital in ethene, H2C=CH2    A)  1 B)  2 C)  3 D)  4" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 13

Which of the following bonds is the most polar?

Accepted Answer

A)   O−H
B)   C−H
C)   C−C
D)   H−HE) B) and C)
F) A) and D)

Question 14

Which of the following species possesses a formal charge?

Accepted Answer

A)   CCl4
B)   SiCl4
C)   AlCl4
D)   PCl3E) A) and D)
F) None of the above

Question 15

Which of the 3 structures shown below has the shortest bond length? Justify your answer.
​

Accepted Answer

Structure 1 has the shortest bond length...

Question 16

What is the molecular formula of Ritalin, shown below?

Accepted Answer

The answer of What is the molecular formula of Ritalin,...

Question 17

Fill the appropriate electronic configuration in the blank. ​
K (1s22s22p63s23p64s1)  + Cl (1s22s22p63s23p5)  → K+ _____ + Cl- (1s22s22p63s23p6)

Accepted Answer

A)   (1s22s22p63s23p64s2) 
B)   (1s22s22p63s23p65s1) 
C)   (1s22s22p63s23p6) 
D)   (1s22s22p63s23p64s1) E) A) and D)
F) A) and C)

Question 18

Which of the following molecules has a molecular dipole moment?

Accepted Answer

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

Question 19

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

Accepted Answer

A)   1s12s12p7
B)   1s22s22p5
C)   1s22s22p6
D)   1s02s22p7E) A) and B)
F) None of the above

Question 20

The following molecule is classified as a __________amine. $$\mathrm { CH } _ { 3 } - \mathrm { NH } - \mathrm { CH } _ { 3 }$$

Accepted Answer

The answer of The following molecule is classified as a...

Exam 1: Covalent Bonding and Shapes of Molecules

Which of the 3 structures shown below has the shortest bond length? Justify your answer.

Correct Answer
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Structure 1 has the shortest bond length...
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Which of the following best represents an sp² hybridized atomic orbital of carbon which overlaps with the 1s atomic orbital of hydrogen to form a C−H σ bonding molecular orbital in ethene, H₂C=CH₂

Correct Answer
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Which of the following species possesses a formal charge?

Correct Answer
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Consider the structure of urea given below. To complete the Lewis structure, six nonbonding electrons should be added, two to each of the nitrogen atoms and two to the oxygen atom.

Correct Answer
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How many electrons are there in the valence shell of the carbon atom of the methyl anion, CH₃−?

Correct Answer
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Which of the following statements is not true about the acetate anion, CH₃CO₂−?

Correct Answer
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Which of the following statements is not true?

Correct Answer
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Correct Answer
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The following molecule is classified as a __________amine. $\mathrm { CH } _ { 3 } - \mathrm { NH } - \mathrm { CH } _ { 3 }$

Correct Answer
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Which of the following molecules has a molecular dipole moment?

Correct Answer
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Which of the following molecules has a molecular dipole moment?

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

Correct Answer
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What is the approximate C−C−C bond angle in propyne, HC≡CCH₃?

Correct Answer
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In drawing the Lewis structure for an organic compound, the carbon atoms should always be shown with eight total electrons.

Correct Answer
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Which of the following bonds has the smallest dipole moment?

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

Correct Answer
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What is the molecular formula of Ritalin, shown below?

Correct Answer
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Which of the following is a tertiary alcohol?

Correct Answer
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Which of the following bonds is a polar covalent bond?

Correct Answer
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Fill the appropriate electronic configuration in the blank. K (1s²2s²2p⁶3s²3p⁶4s¹) + Cl (1s²2s²2p⁶3s²3p⁵) → K⁺ _____ + Cl^- (1s²2s²2p⁶3s²3p⁶)

Correct Answer
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Exam 1: Covalent Bonding and Shapes of Molecules

Which of the 3 structures shown below has the shortest bond length? Justify your answer. ​

Correct AnswerverifiedStructure 1 has the shortest bond length...View AnswerShow Answer

Which of the following best represents an sp2 hybridized atomic orbital of carbon which overlaps with the 1s atomic orbital of hydrogen to form a C−H σ bonding molecular orbital in ethene, H2C=CH2

Correct AnswerverifiedShow Answer

Which of the following species possesses a formal charge?

Correct AnswerverifiedShow Answer

Consider the structure of urea given below. To complete the Lewis structure, six nonbonding electrons should be added, two to each of the nitrogen atoms and two to the oxygen atom.

Correct AnswerverifiedShow Answer

How many electrons are there in the valence shell of the carbon atom of the methyl anion, CH3−?

Correct AnswerverifiedShow Answer

Which of the following statements is not true about the acetate anion, CH3CO2−?

Correct AnswerverifiedShow Answer

Which of the following statements is not true?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The following molecule is classified as a __________amine. CH3−NH−CH3\mathrm { CH } _ { 3 } - \mathrm { NH } - \mathrm { CH } _ { 3 }CH3​−NH−CH3​

Correct AnswerverifiedShow Answer

Which of the following molecules has a molecular dipole moment?

Correct AnswerverifiedShow Answer

Which of the following molecules has a molecular dipole moment?

Correct AnswerverifiedShow Answer

Which of the following bonds is the most polar?

Correct AnswerverifiedShow Answer

What is the approximate C−C−C bond angle in propyne, HC≡CCH3?

Correct AnswerverifiedShow Answer

In drawing the Lewis structure for an organic compound, the carbon atoms should always be shown with eight total electrons.

Correct AnswerverifiedShow Answer

Which of the following bonds has the smallest dipole moment?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is the molecular formula of Ritalin, shown below?

Correct AnswerverifiedShow Answer

Which of the following is a tertiary alcohol?

Correct AnswerverifiedShow Answer

Which of the following bonds is a polar covalent bond?

Correct AnswerverifiedShow Answer

Fill the appropriate electronic configuration in the blank. ​ K (1s22s22p63s23p64s1) + Cl (1s22s22p63s23p5) → K+ _____ + Cl- (1s22s22p63s23p6)

Correct AnswerverifiedShow Answer

Which of the 3 structures shown below has the shortest bond length? Justify your answer.

Correct Answer
verified
Structure 1 has the shortest bond length...
View Answer

Which of the following best represents an sp² hybridized atomic orbital of carbon which overlaps with the 1s atomic orbital of hydrogen to form a C−H σ bonding molecular orbital in ethene, H₂C=CH₂

Correct Answer
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Correct Answer
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Correct Answer
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How many electrons are there in the valence shell of the carbon atom of the methyl anion, CH₃−?

Correct Answer
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Which of the following statements is not true about the acetate anion, CH₃CO₂−?

Correct Answer
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Correct Answer
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Correct Answer
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The following molecule is classified as a __________amine. $\mathrm { CH } _ { 3 } - \mathrm { NH } - \mathrm { CH } _ { 3 }$

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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What is the approximate C−C−C bond angle in propyne, HC≡CCH₃?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Fill the appropriate electronic configuration in the blank. K (1s²2s²2p⁶3s²3p⁶4s¹) + Cl (1s²2s²2p⁶3s²3p⁵) → K⁺ _____ + Cl^- (1s²2s²2p⁶3s²3p⁶)

Correct Answer
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