Question 1

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

Accepted Answer

A) 1s2, 2s2, 2p2 
B) 1s2, 2s2, 2p3 
C) 1s2, 2s2, 2p4 
D) 1s2, 2s2, 2p5 
A) 1s2, 2s2, 2p2 
B) 1s2, 2s2, 2p3 
C) 1s2, 2s2, 2p4 
D) 1s2, 2s2, 2p5 D

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. D

Question 3

Determine the geometry around the indicated atom in each species.

Accepted Answer

A) I = Linear; II = tetrahedral; III = trigonal planar; IV = tetrahedral 
B) I = Linear; II = tetrahedral; III = trigonal planar; IV = linear 
C) I = Trigonal planar; II = linear; III = tetrahedral; IV = trigonal planar 
D) I = Tetrahedral; II = trigonal planar; III = linear; IV = tetrahedral 
A) I = Linear; II = tetrahedral; III = trigonal planar; IV = tetrahedral 
B) I = Linear; II = tetrahedral; III = trigonal planar; IV = linear 
C) I = Trigonal planar; II = linear; III = tetrahedral; IV = trigonal planar 
D) I = Tetrahedral; II = trigonal planar; III = linear; IV = tetrahedral A

Question 4

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. 
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.

Question 5

What is the ground-state electronic configuration of a magnesium cation (Mg2+)?

Accepted Answer

A) 1s2, 2s2, 2p6 
B) 1s2, 2s2, 2p6, 3s1 
C) C. 1s2, 2s2, 2p6, 3s2 
D) D. 1s2, 2s2, 2p6, 3s2, 3p2 
A) 1s2, 2s2, 2p6 
B) 1s2, 2s2, 2p6, 3s1 
C) C. 1s2, 2s2, 2p6, 3s2 
D) D. 1s2, 2s2, 2p6, 3s2, 3p2

Question 6

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 7

In which of the following ions does carbon have a formal charge?

Accepted Answer

A) I 
B) II 
C) III 
D) None of these 
A) I 
B) II 
C) III 
D) None of these

Question 8

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 9

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 10

What is the approximate C-C-C bond angle in propene, CH3CH = CH2?

Accepted Answer

A) 90° 
B) 109.5° 
C) 120° 
D) 180° 
A) 90° 
B) 109.5° 
C) 120° 
D) 180°

Question 11

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 12

Which of the following molecules has a net dipole moment of zero?

Accepted Answer

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

Question 13

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

Accepted Answer

A) 90° 
B) 109.5° 
C) 120° 
D) 180° 
A) 90° 
B) 109.5° 
C) 120° 
D) 180°

Question 14

In which structure is the hybridization incorrect?

Accepted Answer

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

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

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

Accepted Answer

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

Question 17

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 18

Avobenzone is an active ingredient in some common sunscreens.Which of the following is the correct molecular formula for avobenzone?

Accepted Answer

A) C22O22O3 
B) C20H22O3 
C) C21H23O3 
D) C20H24O3 
A) C22O22O3 
B) C20H22O3 
C) C21H23O3 
D) C20H24O3

Question 19

Arrange the following bonds in decreasing order of ionic character, putting the most ionic first.

Accepted Answer

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

Question 20

Which of the following Lewis structures is correct?

Accepted Answer

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

Exam 1: Structure and Bonding

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

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

Determine the geometry around the indicated atom in each species.

Which of the following statements about bonding is true?

What is the ground-state electronic configuration of a magnesium cation (Mg2+)?

Which of the following molecules has polar covalent bonds?

In which of the following ions does carbon have a formal charge?

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

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

What is the approximate C-C-C bond angle in propene, CH3CH = CH2?

Which of the following molecules has nonpolar covalent bonds?

Which of the following molecules has a net dipole moment of zero?

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

In which structure is the hybridization incorrect?

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

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

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

Avobenzone is an active ingredient in some common sunscreens.Which of the following is the correct molecular formula for avobenzone?

Arrange the following bonds in decreasing order of ionic character, putting the most ionic first.

Which of the following Lewis structures is correct?

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

What is the ground-state electronic configuration of a magnesium cation (Mg²⁺)?

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

What is the approximate C-C-C bond angle in propene, CH₃CH = CH₂?

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

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

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