Question 1

How many electrons are around phosphorus in phosphoric acid (H3PO4)?

Accepted Answer

A) 6 
B) 8 
C) 10 
D) 12 
A) 6 
B) 8 
C) 10 
D) 12

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.

Question 3

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 4

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

Question 5

Which of the following compounds has an atom with an unfilled valence shell of electrons?

Accepted Answer

A) H2O 
B) BCl3 
C) CH4 
D) CO2 
A) H2O 
B) BCl3 
C) CH4 
D) CO2

Question 6

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 7

Which of the following molecules has non-polar covalent bonds?

Accepted Answer

A) CO2 
B) N2 
C) CCl4 
D) HF 
A) CO2 
B) N2 
C) CCl4 
D) HF

Question 8

Which of the following is the appropriate conversion of the condensed structure,CH3COCH3,to a Lewis structure?

Accepted Answer

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

Question 9

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

Question 10

Which compound contains the most polar bond?

Accepted Answer

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

Question 11

How many constitutional isomers are there for a molecule having the molecular formula C2H6O?

Accepted Answer

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

Question 12

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 13

Which atomic orbitals overlap to form the C-H s bonding molecular orbitals of ethylene,H2C=CH2?

Accepted Answer

A) C2p + H1s 
B) Csp + H1s 
C) Csp3 + H1s 
D) Csp2 + H1s 
A) C2p + H1s 
B) Csp + H1s 
C) Csp3 + H1s 
D) Csp2 + H1s

Question 14

What is the hybridization of the nitrogen atom in the ammonium cation,NH4+?

Accepted Answer

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

Question 15

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

Question 16

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 17

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

Exam 1: Structure and Bonding

How many electrons are around phosphorus in phosphoric acid (H3PO4)?

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 Lewis structures is correct?

Which of the following compounds has an atom with an unfilled valence shell of electrons?

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

Which of the following molecules has non-polar covalent bonds?

Which of the following is the appropriate conversion of the condensed structure,CH3COCH3,to a Lewis structure?

Determine the geometry around the indicated atom in each species.

Which compound contains the most polar bond?

How many constitutional isomers are there for a molecule having the molecular formula C2H6O?

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

Which atomic orbitals overlap to form the C-H s bonding molecular orbitals of ethylene,H2C=CH2?

What is the hybridization of the nitrogen atom in the ammonium cation,NH4+?

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

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

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

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

How many electrons are around phosphorus in phosphoric acid (H₃PO₄)?

Which of the following is the appropriate conversion of the condensed structure,CH₃COCH₃,to a Lewis structure?

How many constitutional isomers are there for a molecule having the molecular formula C₂H₆O?

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

Which atomic orbitals overlap to form the C-H s bonding molecular orbitals of ethylene,H₂C=CH₂?

What is the hybridization of the nitrogen atom in the ammonium cation,NH₄⁺?

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