Question 1

What is the formal charge of the carbon in carbon dioxide (CO2)when drawn with two double bonds?

Accepted Answer

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

Question 2

Which of the following statements about electronegativity and the periodic table is true?

Accepted Answer

A) Electronegativity decreases across a row of the periodic table. 
B) Electronegativity increases down a column of the periodic table. 
C) Electronegativity increases across a row of the periodic table. 
D) Electronegativity does not change down a column of the periodic table. 
A) Electronegativity decreases across a row of the periodic table. 
B) Electronegativity increases down a column of the periodic table. 
C) Electronegativity increases across a row of the periodic table. 
D) Electronegativity does not change down a column of the periodic table. C

Question 3

Convert the following skeletal structure to a condensed structure.

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV A

Question 4

Which is more important in each pair of contributing resonance structures?

Accepted Answer

A) II,IV,V 
B) II,III,V 
C) II,III,VI 
D) I,IV,V 
A) II,IV,V 
B) II,III,V 
C) II,III,VI 
D) I,IV,V

Question 5

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

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 6

What is the condensed formula of the compound below?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 7

Which of the following molecules does not have a net dipole moment of zero?

Accepted Answer

A) CCl4 
B) BF3 
C) CO2 
D) NH3 
A) CCl4 
B) BF3 
C) CO2 
D) NH3

Question 8

Which of the following covalent bonds has the largest dipole moment?

Accepted Answer

A) C-H 
B) C-C 
C) C-O 
D) H-F 
A) C-H 
B) C-C 
C) C-O 
D) H-F

Question 9

What is the hybridization of the carbon atom in the methyl cation,(CH3+)?

Accepted Answer

A) sp3 
B) sp2 
C) sp 
D) p 
A) sp3 
B) sp2 
C) sp 
D) p

Question 10

Which of the following molecules has nonpolar covalent bonds?

Accepted Answer

A) HCl 
B) N2 
C) CHCl3 
D) NO 
A) HCl 
B) N2 
C) CHCl3 
D) NO

Question 11

Which of the following is the appropriate conversion of (CH3)2CHOCH2CH2CH2OH to a skeletal structure?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 12

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) 1s2,2s2,2p6,3s2,3p4 
A) 1s2,2s2,2p6 
B) 1s2,2s2,2p6,3s2,3p6 
C) 1s2,2s2,2p6,3s2,3p5 
D) 1s2,2s2,2p6,3s2,3p4

Question 13

Which of the following statements about constitutional isomers is true?

Accepted Answer

A) Constitutional isomers are different molecules having the different molecular formula. 
B) Constitutional isomers are different molecules having the same molecular formula. 
C) Constitutional isomers are same molecules having the different molecular formula. 
D) Constitutional isomers are same molecules having the same molecular formula. 
A) Constitutional isomers are different molecules having the different molecular formula. 
B) Constitutional isomers are different molecules having the same molecular formula. 
C) Constitutional isomers are same molecules having the different molecular formula. 
D) Constitutional isomers are same molecules having the same molecular formula.

Question 14

How many constitutional isomers are there for a molecule having the molecular formula C2H4Cl2?

Accepted Answer

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

Question 15

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

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 16

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. 
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.

Question 17

What is the molecular geometry around the carbon atom in CH4?

Accepted Answer

A) Tetrahedral 
B) Trigonal Planar 
C) Trigonal Pyramidal 
D) Linear 
A) Tetrahedral 
B) Trigonal Planar 
C) Trigonal Pyramidal 
D) Linear

Question 18

Rank the following atoms in order of increasing electronegativity,putting the least electronegative first.

Accepted Answer

A) I < II < III < IV 
B) I < IV < II < III 
C) III < II < IV < I 
D) I < II < IV < III 
A) I < II < III < IV 
B) I < IV < II < III 
C) III < II < IV < I 
D) I < II < IV < III

Question 19

Consider compounds which contain both a heteroatom and a double bond.For which compound is no additional Lewis structure possible?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 20

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. 
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.

Exam 1: Structure and Bonding

What is the formal charge of the carbon in carbon dioxide (CO2)when drawn with two double bonds?

Which of the following statements about electronegativity and the periodic table is true?

Convert the following skeletal structure to a condensed structure.

Which is more important in each pair of contributing resonance structures?

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

What is the condensed formula of the compound below?

Which of the following molecules does not have a net dipole moment of zero?

Which of the following covalent bonds has the largest dipole moment?

What is the hybridization of the carbon atom in the methyl cation,(CH3+)?

Which of the following molecules has nonpolar covalent bonds?

Which of the following is the appropriate conversion of (CH3)2CHOCH2CH2CH2OH to a skeletal structure?

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

Which of the following statements about constitutional isomers is true?

How many constitutional isomers are there for a molecule having the molecular formula C2H4Cl2?

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

Which of the following statements about resonance structures is true?

What is the molecular geometry around the carbon atom in CH4?

Rank the following atoms in order of increasing electronegativity,putting the least electronegative first.

Consider compounds which contain both a heteroatom and a double bond.For which compound is no additional Lewis structure possible?

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

Acids and Bases

Introduction to Organic Molecules and Functional Groups

Alkanes

Stereochemistry

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols,ethers,and Related Compounds

Alkenes and Addition Reactions

Alkynes and Synthesis

Oxidation and Reduction

Radical Reactions

Conjugation,resonance,and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

Aldehydes and Ketones - Nucleophilic Addition

Carboxylic Acids and the Acidity of the O-H Bond

Carboxylic Acids and Their Derivatives Nucleophilic Acyl Substitution

Substitution Reactions of Carbonyl Compounds at the a Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond-Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Synthetic Polymers

Lipids

Spectroscopy A: Mass Spectrometry

Spectroscopy B: Infrared Spectroscopy

Spectroscopy C: Nuclear Magnetic Resonance Spectroscopy

Filters

What is the formal charge of the carbon in carbon dioxide (CO₂)when drawn with two double bonds?

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

What is the hybridization of the carbon atom in the methyl cation,(CH₃⁺)?

Which of the following is the appropriate conversion of (CH₃)₂CHOCH₂CH₂CH₂OH to a skeletal structure?

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

How many constitutional isomers are there for a molecule having the molecular formula C₂H₄Cl₂?

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

What is the molecular geometry around the carbon atom in CH₄?