Question 1

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 + Csp2E) A) and B)
F) B) and 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.E) A) and D)
F) A) and C)

Question 3

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.E) B) and D)
F) All of the above

Question 4

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

Accepted Answer

A)  Tetrahedral
B)  Trigonal Planar
C)  Trigonal Pyramidal
D)  LinearE) B) and C)
F) None of the above

Question 5

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) C) and D)
F) A) and D)

Question 6

Rank the following in order of decreasing importance as contributing structures to the resonance hybrid of formaldehyde,H2CO. 2CO.   A) I > II > III B) I > III > II C) II > I > III D) III > II > I" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

A)  4
B)  5
C)  6
D)  7E) A) and B)
F) None of the above

Question 9

Which of the following molecules has nonpolar covalent bonds?

Accepted Answer

A)  HCl
B)  N2
C)  CHCl3
D)  NOE) None of the above
F) B) and C)

Question 10

Convert the following skeletal structure to a condensed structure.

Accepted Answer

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

Question 11

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

Accepted Answer

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

Question 12

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

Accepted Answer

A)  1
B)  2
C)  3
D)  4E) All of the above
F) A) and D)

Question 13

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)  1s2,2s2,2p6,3s2,3p4E) B) and C)
F) All of the above

Question 14

Which of the following molecules has polar covalent bonds?

Accepted Answer

A)  MgO
B)  NH3
C)  Cl2
D)  NaBrE) All of the above
F) None of the above

Question 15

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.E) B) and D)
F) A) and C)

Question 16

Rank the following atoms in order of decreasing electronegativity,putting the most electronegative first.  IV > II > III B) II > III > IV > I C) III > IV > II > I D) III > II > IV > I" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 17

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 D)
F) None of the above

Question 18

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

Accepted Answer

A)  Hydrogen
B)  Lithium
C)  Potassium
D)  RubidiumE) A) and B)
F) A) and D)

Question 19

Which is the correct Lewis structure for acetic acid (CH3CO2H) ? 3CO2H) ?   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) A) and B)
F) None of the above

Question 20

Which of the following compounds are non-polar?

Accepted Answer

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

Exam 1: Structure and Bonding

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

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Which of the following statements about constitutional isomers is true?

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

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Which of the following compounds are non-polar?

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

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Convert the following skeletal structure to a condensed structure.

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

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

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

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Which of the following molecules has nonpolar covalent bonds?

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

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

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

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

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

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Which of the following molecules has polar covalent bonds?

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Which of the following statements about valence electrons is true?

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

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

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

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

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

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

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

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

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

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

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

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