Question 1

What is the hybridization of the N atom in the following molecule?

Accepted Answer

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

Question 2

Identify the atomic orbital.The lone pair electrons on the C atom are contained in:

Accepted Answer

A)  2sp3  
B)  2sp2  
C)  2sp 
D)  2s 
E)  2p 
A)  2sp3  
B)  2sp2  
C)  2sp 
D)  2s 
E)  2p

Question 3

Which of the following could not be a resonance structure of CH3NO2?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E)  Both C and D 
A) 
  
B) 
  
C) 
  
D) 
  
E)  Both C and D

Question 4

Listed below are electron dot formulas for several simple molecules and ions.All valence electrons are shown;however,electrical charges have been omitted deliberately.   Which of the structures is negatively charged?

Accepted Answer

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

Question 5

Considering Lewis structures,which of these compounds possesses a single unpaired electron?

Accepted Answer

A)  N2 
B)  N2O 
C)  NO 
D)  N2O4 
E)  O2 
A)  N2 
B)  N2O 
C)  NO 
D)  N2O4 
E)  O2

Question 6

In which structure(s)below does nitrogen have a formal charge of +1?

Accepted Answer

A)  I 
B)  II and IV 
C)  III and V 
D)  I and V 
E)  V 
A)  I 
B)  II and IV 
C)  III and V 
D)  I and V 
E)  V

Question 7

Draw all the isomers of C4H10O,using bond-line formulas.

Accepted Answer

Question 8

Identify the atomic orbitals in the C-O sigma bond in acetone.

Accepted Answer

A)  (2sp2,2sp2) 
B)  (2sp3,2sp3) 
C)  (2sp,2sp) 
D)  (2p,2p) 
E)  (2sp,1s) 
A)  (2sp2,2sp2) 
B)  (2sp3,2sp3) 
C)  (2sp,2sp) 
D)  (2p,2p) 
E)  (2sp,1s)

Question 9

Identify the atomic orbital.The lone pair electrons on the N atom are contained in:

Accepted Answer

A)  2sp2  
B)  2sp3  
C)  2p 
D)  2s 
E)  2sp 
A)  2sp2  
B)  2sp3  
C)  2p 
D)  2s 
E)  2sp

Question 10

Which of the following structures is/are not a resonance form of the following species?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E)  None of the above are correct resonance forms. 
A) 
  
B) 
  
C) 
  
D) 
  
E)  None of the above are correct resonance forms.

Question 11

Which of these substances contain both covalent and ionic bonds?

Accepted Answer

A)  NH4Cl 
B)  H2O2 
C)  CH4 
D)  HCN 
E)  H2S 
A)  NH4Cl 
B)  H2O2 
C)  CH4 
D)  HCN 
E)  H2S

Question 12

Define an orbital.

Accepted Answer

A region of space wh

Question 13

Which is the shortest of the carbon-carbon single bonds indicated by arrows in the following compounds?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) 
  
A) 
  
B) 
  
C) 
  
D) 
  
E)

Question 14

In which of the following would you expect the central atom to be sp3 hybridized (or approximately sp3 hybridized)?

Accepted Answer

A)  BH4- 
B)  NH4+ 
C)  CCl4 
D)  CH3:- 
E)  All of these 
A)  BH4- 
B)  NH4+ 
C)  CCl4 
D)  CH3:- 
E)  All of these

Question 15

What is the geometry of the N in the following molecule?

Accepted Answer

A)  tetrahedral  
B)  trigonal pyramidal  
C)  linear 
D)  bent 
E)  trigonal planar 
A)  tetrahedral  
B)  trigonal pyramidal  
C)  linear 
D)  bent 
E)  trigonal planar

Question 16

What is the geometry of the N in the following molecule?

Accepted Answer

A)  tetrahedral  
B)  trigonal pyramidal  
C)  linear 
D)  bent 
E)  trigonal planar 
A)  tetrahedral  
B)  trigonal pyramidal  
C)  linear 
D)  bent 
E)  trigonal planar

Question 17

Identify the atomic orbital the lone pair electrons on the O atom are contained in:

Accepted Answer

A)  2sp2 
B)  2sp3 
C)  2sp 
D)  2s 
E)  2p 
A)  2sp2 
B)  2sp3 
C)  2sp 
D)  2s 
E)  2p

Question 18

What is the hybridization of the C indicated with the arrow?

Accepted Answer

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

Question 19

Identify the atomic orbitals in the C-N sigma bond in the following oxime:

Accepted Answer

A)  (2sp2,2sp2) 
B)  (2sp3,2sp3) 
C)  (2sp,2sp) 
D)  (2sp2,2sp3) 
E)  (2sp,1s) 
A)  (2sp2,2sp2) 
B)  (2sp3,2sp3) 
C)  (2sp,2sp) 
D)  (2sp2,2sp3) 
E)  (2sp,1s)

Question 20

What is the hybridization of the C atom in the following molecule?

Accepted Answer

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

Exam 1: Carbon Compounds and Chemical Bonds

What is the hybridization of the N atom in the following molecule?

Identify the atomic orbital.The lone pair electrons on the C atom are contained in:

Which of the following could not be a resonance structure of CH3NO2?

Listed below are electron dot formulas for several simple molecules and ions.All valence electrons are shown;however,electrical charges have been omitted deliberately. Which of the structures is negatively charged?

Considering Lewis structures,which of these compounds possesses a single unpaired electron?

In which structure(s)below does nitrogen have a formal charge of +1?

Draw all the isomers of C4H10O,using bond-line formulas.

Identify the atomic orbitals in the C-O sigma bond in acetone.

Identify the atomic orbital.The lone pair electrons on the N atom are contained in:

Which of the following structures is/are not a resonance form of the following species?

Which of these substances contain both covalent and ionic bonds?

Define an orbital.

Which is the shortest of the carbon-carbon single bonds indicated by arrows in the following compounds?

In which of the following would you expect the central atom to be sp3 hybridized (or approximately sp3 hybridized)?

What is the geometry of the N in the following molecule?

What is the geometry of the N in the following molecule?

Identify the atomic orbital the lone pair electrons on the O atom are contained in:

What is the hybridization of the C indicated with the arrow?

Identify the atomic orbitals in the C-N sigma bond in the following oxime:

What is the hybridization of the C atom in the following molecule?

Representative Carbon Compounds: Functional Groups, Intermolecular Forces, and Infrared Ir Spectroscopy

An Introduction to Organic Reactions: Acids and Bases

Alkanes: Nomenclature, Conformational Analysis, and an Introduction to Synthesis

Stereochemistry: Chiral Molecules

Ionic Reactions - Nucleophilic Substitution and Elimination Reactions of Alkyl Halides

Alkenes and Alkynes I: Properties and Synthesis, Elimination Reactions of Alkyl Halides

Alkenes and Alkynes Ii: Addition Reactions

Nuclear Magnetic Resonance and Mass Spectrometry: Tools for Structure Determination

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds Oxidation-Reduction and Organometallic Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones I Nucleophilic Addition to the Carbonyl Group

Aldehydes and Ketones Ii Aldol Reactions

Carboxylic Acids and Their Derivatives Nucleophilic Addition - Elimination at the Acyl Carbon

Synthesis and Reactions of Beta-Dicarbonyl Compounds: More Chemistry of Enolate Ions

Amines

Phenols and Aryl Halides: Nucleophilic Aromatic Substitution

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Which of the following could not be a resonance structure of CH₃NO₂?

Draw all the isomers of C₄H₁₀O,using bond-line formulas.

In which of the following would you expect the central atom to be sp³ hybridized (or approximately sp³ hybridized)?