Question 1

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 2

Which of the following statements about resonance structures is not true?

Accepted Answer

A) There is no movement of electrons from one form to another. 
B) Resonance structures are not isomers. 
C) Resonance structures differ only in the arrangement of electrons. 
D) Resonance structures are in equilibrium with each other. 
A) There is no movement of electrons from one form to another. 
B) Resonance structures are not isomers. 
C) Resonance structures differ only in the arrangement of electrons. 
D) Resonance structures are in equilibrium with each other.

Question 3

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 4

Which of the following compounds are non-polar?

Accepted Answer

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

Question 5

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 6

Which atomic orbitals overlap to form the carbon-carbon s and p 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 + Csp2 
A) Csp3 + Csp3,and C2p + C2p 
B) Csp3 + Csp3,and Csp2 + Csp2 
C) Csp2 + Csp2,and C2p + C2p 
D) Csp2 + Csp2,and Csp2 + Csp2

Question 7

How many different isomers are there for a compound having the molecular formula C3H6O?

Accepted Answer

A) 4 
B) 5 
C) 6 
D) 7 
A) 4 
B) 5 
C) 6 
D) 7

Question 8

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 9

Which of the following would most likely form an ionic bond?

Accepted Answer

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

Question 10

Rank the following in order of decreasing importance as contributing structures to the resonance hybrid of formaldehyde,H2CO.

Accepted Answer

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

Question 11

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 12

What is the order of decreasing bond length for a C-C bond composed of the following molecular orbitals?

Accepted Answer

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

Question 13

Which of the following atoms will have a full 3s orbital in the ground state?

Accepted Answer

A) Hydrogen 
B) Lithium 
C) Potassium 
D) Rubidium 
A) Hydrogen 
B) Lithium 
C) Potassium 
D) Rubidium

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

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

Question 16

Which of the following molecules contain both covalent and ionic bonds?

Accepted Answer

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

Question 17

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 18

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 19

Which of the following molecules has polar covalent bonds?

Accepted Answer

A) MgO 
B) NH3 
C) Cl2 
D) NaBr 
A) MgO 
B) NH3 
C) Cl2 
D) NaBr

Question 20

Rank the following atoms in order of decreasing electronegativity,putting the most electronegative first.

Accepted Answer

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

Exam 1: Structure and Bonding

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

Which of the following statements about resonance structures is not true?

Which of the following molecules has nonpolar covalent bonds?

Which of the following compounds are non-polar?

Which of the following statements about valence electrons is true?

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

How many different isomers are there for a compound having the molecular formula C3H6O?

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

Which of the following would most likely form an ionic bond?

Rank the following in order of decreasing importance as contributing structures to the resonance hybrid of formaldehyde,H2CO.

Which of the following statements about constitutional isomers is true?

What is the order of decreasing bond length for a C-C bond composed of the following molecular orbitals?

Which of the following atoms will have a full 3s orbital in the ground state?

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

Convert the following skeletal structure to a condensed structure.

Which of the following molecules contain both covalent and ionic bonds?

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

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

Which of the following molecules has polar covalent bonds?

Rank the following atoms in order of decreasing electronegativity,putting the most electronegative first.

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

Molecular Ion Peaks and Fragmentation Patterns

Analyzing Molecular Motion and Infrared Spectroscopy

Organic Spectroscopy Concepts

Filters

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

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

How many different isomers are there for a compound having the molecular formula C₃H₆O?

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

Rank the following in order of decreasing importance as contributing structures to the resonance hybrid of formaldehyde,H₂CO.

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

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

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