Question 1

What is the ground-state electronic configuration of a carbon atom?

Accepted Answer

A) 1s2, 2s2, 2p5 
B) 1s2, 2s2, 2p2 
C) 1s2, 2s2, 2p6 
D) 1s2, 2s2, 2p4 
A) 1s2, 2s2, 2p5 
B) 1s2, 2s2, 2p2 
C) 1s2, 2s2, 2p6 
D) 1s2, 2s2, 2p4

Question 2

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.

Question 3

Which of the following resonance structures is the least important contributor to the resonance hybrid of the formate anion, HCOO-?

Accepted Answer

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

Question 4

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.

Question 5

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 6

Which of the following molecules are constitutional isomers?

Accepted Answer

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

Question 7

Which of the following would you expect to have ionic bonds?

Accepted Answer

A) CO 
B) FBr 
C) NF3 
D) NaCl 
A) CO 
B) FBr 
C) NF3 
D) NaCl

Question 8

Which of the following statements about valence electrons is true?

Accepted Answer

A) They are the most tightly held electrons. 
B) They do not participate in chemical reactions. 
C) They are the outermost electrons. 
D) They reveal the period number of a second-row element. 
A) They are the most tightly held electrons. 
B) They do not participate in chemical reactions. 
C) They are the outermost electrons. 
D) They reveal the period number of a second-row element.

Question 9

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

Accepted Answer

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

What is the ground-state electronic configuration of a carbon atom?

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

Which of the following resonance structures is the least important contributor to the resonance hybrid of the formate anion, HCOO^-?

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

Which of the following statements about resonance structures is true?

Which of the following molecules are constitutional isomers?

Which of the following would you expect to have ionic bonds?

Which of the following statements about valence electrons is true?

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

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

Alkynes

Oxidation and Reduction

Mass Spectrometry and Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Radical Reactions

Conjugation, Resonance, and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Carboxylic Acids and the Acidity of the O-H Bond

Introduction to Carbonyl Chemistry;

Aldehydes and Ketones Nucleophilic Addition

Carboxylic Acids and Derivatives

Substitution Reactions of Carbonyl Compounds at the Alpha-Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Synthetic Polymers

Lipids

Filters

Exam 1: Structure and Bonding

What is the ground-state electronic configuration of a carbon atom?

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

Which of the following resonance structures is the least important contributor to the resonance hybrid of the formate anion, HCOO-?

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

Which of the following statements about resonance structures is true?

Which of the following molecules are constitutional isomers?

Which of the following would you expect to have ionic bonds?

Which of the following statements about valence electrons is true?

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

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

Alkynes

Oxidation and Reduction

Mass Spectrometry and Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Radical Reactions

Conjugation, Resonance, and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Carboxylic Acids and the Acidity of the O-H Bond

Introduction to Carbonyl Chemistry;

Aldehydes and Ketones Nucleophilic Addition

Carboxylic Acids and Derivatives

Substitution Reactions of Carbonyl Compounds at the Alpha-Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Synthetic Polymers

Lipids

Filters

Which of the following resonance structures is the least important contributor to the resonance hybrid of the formate anion, HCOO^-?

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