Question 1

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

Accepted Answer

A)  6
B)  8
C)  10
D)  12E) None of the above
F) B) and D)

Question 2

In which structure is the hybridization incorrect?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) All of the above
F) None of the above

Question 3

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

Accepted Answer

A)  sp3
B)  sp2
C)  sp
D)  pE) A) and B)
F) C) and D)

Question 4

What is the approximate value of the H-C-H bond angle in methane,CH4?

Accepted Answer

A)  90°
B)  109.5°
C)  120°
D)  180°E) All of the above
F) A) and C)

Question 5

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

Accepted Answer

A)  1
B)  2
C)  3
D)  4E) A) and D)
F) B) and C)

Question 6

What is the molecular geometry around the boron atom in BH3?

Accepted Answer

A)  Tetrahedral
B)  Trigonal Planar
C)  Trigonal Pyramidal
D)  LinearE) A) and B)
F) B) and C)

Question 7

Which of the following is the appropriate conversion of the condensed structure,CH3COCH3,to a Lewis structure? 3COCH3,to a Lewis structure?   A) I B) II C) III D) IV" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) B) and C)
F) A) and D)

Question 8

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 = tetrahedralE) A) and B)
F) C) and D)

Question 9

Which of the following pair does not represent resonance structures?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) C) and D)
F) None of the above

Question 10

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

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) B) and C)
F) All of the above

Question 11

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

Accepted Answer

A)  I,II
B)  I,IV
C)  II,III
D)  II,IVE) A) and B)
F) A) and C)

Question 12

What is the approximate bond angle for the C-C-N bond in acetonitrile,CH3CN?

Accepted Answer

A)  90°
B)  109.5°
C)  120°
D)  180°E) None of the above
F) All of the above

Question 13

What is the order of decreasing bond length for a C-C bond composed of the following molecular orbitals?  III > II B) I > II > III C) III > II > I D) II > III > I" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  I > III > II
B)  I > II > III
C)  III > II > I
D)  II > III > IE) A) and C)
F) C) and D)

Question 14

Which atomic orbitals overlap to form the C-H s bonding molecular orbitals of acetylene,C2H2?

Accepted Answer

A)  Csp + H1s
B)  C2p +H1s
C)  Csp3 + H1s
D)  Csp2 + H1sE) All of the above
F) None of the above

Question 15

Which of the following is a resonance structure of the compound below?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) B) and C)
F) A) and D)

Question 16

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,IIIE) A) and D)
F) A) and C)

Question 17

Which molecule has the greatest difference in electronegativity (DE) between the two different elements?

Accepted Answer

A)  CO2
B)  H2S
C)  NH3
D)  H2OE) A) and C)
F) C) and D)

Question 18

Which atomic orbitals overlap to form the C-H s bonding molecular orbitals of ethane,CH3CH3?

Accepted Answer

A)  Csp2 + H1s
B)  Csp3 + H1s
C)  C2p + H1s
D)  Csp + H1sE) B) and C)
F) None of the above

Question 19

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 
B)  III 
C)  III 
D)  I < II < IIIE) None of the above
F) A) and B)

Question 20

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

Accepted Answer

A)  CO2
B)  N2
C)  CCl4
D)  HFE) None of the above
F) A) and B)

Exam 1: Structure and Bonding

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

Correct AnswerverifiedShow Answer

Determine the geometry around the indicated atom in each species.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is the approximate value of the H-C-H bond angle in methane,CH4?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is the molecular geometry around the boron atom in BH3?

Correct AnswerverifiedShow Answer

In which structure is the hybridization incorrect?

Correct AnswerverifiedShow Answer

What is the approximate bond angle for the C-C-N bond in acetonitrile,CH3CN?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which atomic orbitals overlap to form the C-H s bonding molecular orbitals of ethane,CH3CH3?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which atomic orbitals overlap to form the C-H s bonding molecular orbitals of acetylene,C2H2?

Correct AnswerverifiedShow Answer

Which of the following pair does not represent resonance structures?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which molecule has the greatest difference in electronegativity (DE) between the two different elements?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is a resonance structure of the compound below?

Correct AnswerverifiedShow Answer

Which of the following molecules are constitutional isomers?

Correct AnswerverifiedShow Answer

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

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

What is the approximate value of the H-C-H bond angle in methane,CH₄?

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

What is the molecular geometry around the boron atom in BH₃?

Correct Answer
verified

Correct Answer
verified

What is the approximate bond angle for the C-C-N bond in acetonitrile,CH₃CN?

Correct Answer
verified

Correct Answer
verified

Which atomic orbitals overlap to form the C-H s bonding molecular orbitals of ethane,CH₃CH₃?

Correct Answer
verified

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

Correct Answer
verified

Which atomic orbitals overlap to form the C-H s bonding molecular orbitals of acetylene,C₂H₂?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified