Question 1

What is the approximate bond angle for the C-C-N bond in acetonitrile, CH3CN?

Accepted Answer

A)   90°
B)   109.5°
C)   120°
D)   180°E) B) and C)
F) A) and D)

Question 2

Which is the correct Lewis structure for acetic acid (CH3CO2H) ? 3CO2H) ?   A)  I B)  II C)  III D)  IV" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   I
B)   II
C)   III
D)   IVE) All of the above
F) C) and D)

Question 3

Rank the following atoms in order of increasing electronegativity, putting the least electronegative first.  SClFN I  II  III  IV \begin{array} { c c c c } \mathrm { S } & \mathrm { Cl } & \mathrm { F } & \mathrm { N } \	ext { I } & 	ext { II } & 	ext { III } & 	ext { IV }\end{array}S I ​Cl II ​F III ​N IV ​

Accepted Answer

A)   I 
B)   I 
C)   III 
D)   I < II < IV < III E) A) and C)
F) A) and B)

Question 4

Which of the following molecules has non-polar covalent bonds?

Accepted Answer

A)   CO2
B)   N2
C)   CCl4
D)   HFE) A) and D)
F) B) and D)

Question 5

What is the approximate H-C-O bond angle in formaldehyde, H2CO?

Accepted Answer

A)   90°
B)   109.5°
C)   120°
D)   180°E) A) and B)
F) A) and C)

Question 6

Which of the following statements about resonance structures is true?

Accepted Answer

A)   Resonance structures have the same placement of electrons but different arrangement of atoms.
B)   Resonance structures have the same placement of atoms but different arrangement of electrons.
C)   Resonance structures have the same placement of atoms and the same arrangement of electrons.
D)   Resonance structures have different placement of atoms and different arrangement of electrons.E) B) and C)
F) A) and B)

Question 7

What is the ground-state electronic configuration of a chlorine anion (Cl-) ?

Accepted Answer

A)   1s2, 2s2, 2p6
B)   1s2, 2s2, 2p6, 3s2, 3p6
C)   1s2, 2s2, 2p6, 3s2, 3p5
D)   1s2, 2s2, 2p6, 3s2, 3p4E) A) and C)
F) B) and C)

Question 8

How many constitutional isomers are there for a molecule having the molecular formula C3H6?

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) All of the above
F) B) and D)

Question 9

Rank the following atoms in order of decreasing electronegativity, putting the most electronegative first.  SiN O  C  I  II  III  IV \begin{array} { l l l l } \mathrm { Si } & \mathrm { N } & 	ext { O } & 	ext { C } \	ext { I } & 	ext { II } & 	ext { III } & 	ext { IV }\end{array}Si I ​N II ​ O  III ​ C  IV ​

Accepted Answer

A)   I > IV > II > III
B)   II > III > IV > I
C)   III > IV > II > I
D)   III > II > IV > I E) A) and B)
F) A) and C)

Question 10

Which of the following is the appropriate conversion of (CH3) 4C to a skeletal structure? 3) 4C to a skeletal structure?   A)  I B)  II C)  III D)  IV" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   I
B)   II
C)   III
D)   IVE) A) and B)
F) A) and C)

Question 11

When forming molecular orbitals from atomic orbitals, what is the order of increasing C-H bond strength for the following.

Accepted Answer

A)   II 
B)   III 
C)   III 
D)   I < II < IIIE) B) and C)
F) None of the above

Question 12

What is the condensed formula of the compound below?

Accepted Answer

A)   I
B)   II
C)   III
D)   IVE) A) and B)
F) A) and D)

Question 13

Which is not an acceptable Lewis structure for the anion CH2NCO-? 2NCO-?   A)  I B)  II C)  III D)  IV" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   I
B)   II
C)   III
D)   IVE) A) and D)
F) A) and B)

Question 14

Which atomic orbitals overlap to form the carbon-carbon  and  bonding molecular orbitals of ethylene, H2C=CH2?

Accepted Answer

A)   Csp3 + Csp3, and C2p + C2p
B)   Csp3 + Csp3, and Csp2 + Csp2
C)   Csp2 + Csp2, and C2p + C2p
D)   Csp2 + Csp2, and Csp2 + Csp2E) B) and C)
F) A) and C)

Question 15

What 2 things will change between two resonance structures?

Accepted Answer

A)   The position of multiple bonds and non-bonded electrons.
B)   The position of multiple bonds and single bonds.
C)   The placement of atoms and single bonds.
D)   The placement of atoms and non-bonded electrons.E) C) and D)
F) None of the above

Question 16

Which of the following statements about bonding is true?

Accepted Answer

A)   Covalent bonds result from the transfer of electrons from one element to another.
B)   Ionic bonds result from the transfer of electrons from a metal to a non-metal.
C)   Ionic bonds result from the sharing of electrons between two non-metals.
D)   Covalent bonds result from the sharing of electrons between two metals.E) A) and C)
F) A) and D)

Question 17

Which atomic orbitals overlap to form the carbon-carbon  bonding molecular orbital of acetylene, C2H2?

Accepted Answer

A)   Csp2 + Csp2
B)   Csp + Csp
C)   Csp3 + Csp3
D)   C2p + C2pE) B) and C)
F) A) and B)

Question 18

Which of the following statements correctly describes the typical number of bonds for carbon, nitrogen, and oxygen in most neutral organic molecules?

Accepted Answer

A)   Carbon forms 4 covalent bonds, nitrogen forms 2 covalent bonds and oxygen forms 3 covalent bonds.
B)   Carbon forms 4 covalent bonds, nitrogen forms 3 covalent bonds and oxygen forms 2 covalent bonds.
C)   Carbon forms 4 covalent bonds, nitrogen forms 5 covalent bonds and oxygen forms 2 covalent bonds.
D)   Carbon forms 4 covalent bonds, nitrogen forms 5 covalent bonds and oxygen forms 4 covalent bonds.E) A) and B)
F) A) and C)

Question 19

In which structure is the hybridization incorrect?

Accepted Answer

A)   I
B)   II
C)   III
D)   IVE) C) and D)
F) A) and D)

Question 20

Which of the following molecules has the smallest dipole moment?

Accepted Answer

A)   CO2
B)   HCl
C)   H2O
D)   NH3E) C) and D)
F) None of the above

Exam 1: Structure and Bonding

Which of the following molecules has the smallest dipole moment?

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Which is not an acceptable Lewis structure for the anion CH2NCO-?

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When forming molecular orbitals from atomic orbitals, what is the order of increasing C-H bond strength for the following.

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Which of the following statements about resonance structures is true?

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Which of the following is the appropriate conversion of (CH3) 4C to a skeletal structure?

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In which structure is the hybridization incorrect?

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How many constitutional isomers are there for a molecule having the molecular formula C3H6?

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What 2 things will change between two resonance structures?

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Which atomic orbitals overlap to form the carbon-carbon  and  bonding molecular orbitals of ethylene, H2C=CH2?

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Which of the following molecules has non-polar covalent bonds?

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Which is the correct Lewis structure for acetic acid (CH3CO2H) ?

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Which of the following statements correctly describes the typical number of bonds for carbon, nitrogen, and oxygen in most neutral organic molecules?

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What is the condensed formula of the compound below?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

What is the approximate bond angle for the C-C-N bond in acetonitrile, CH3CN?

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What is the ground-state electronic configuration of a chlorine anion (Cl-) ?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which atomic orbitals overlap to form the carbon-carbon  bonding molecular orbital of acetylene, C2H2?

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Which of the following statements about bonding is true?

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What is the approximate H-C-O bond angle in formaldehyde, H2CO?

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Which is not an acceptable Lewis structure for the anion CH₂NCO^-?

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Which of the following is the appropriate conversion of (CH₃) ₄C to a skeletal structure?

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How many constitutional isomers are there for a molecule having the molecular formula C₃H₆?

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Which atomic orbitals overlap to form the carbon-carbon  and  bonding molecular orbitals of ethylene, H₂C=CH₂?

Correct Answer
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Which is the correct Lewis structure for acetic acid (CH₃CO₂H) ?

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What is the approximate bond angle for the C-C-N bond in acetonitrile, CH₃CN?

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What is the ground-state electronic configuration of a chlorine anion (Cl^-) ?

Correct Answer
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Which atomic orbitals overlap to form the carbon-carbon  bonding molecular orbital of acetylene, C₂H₂?

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What is the approximate H-C-O bond angle in formaldehyde, H₂CO?

Correct Answer
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