Question 1

Choose the best Lewis structure for NO3⁻.

Accepted Answer

A)   3⁻. 
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B)   3⁻. 
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C)   3⁻. 
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D)   3⁻. 
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E)   3⁻. 
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G) A) and B)

Question 2

How many lone pairs of electrons are on the Br atom in BrF4+?

Accepted Answer

A)   0
B)   1
C)   2
D)   3E) None of the above
F) A) and C)

Question 3

Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of SO2.

Accepted Answer

A)   eg = tetrahedral, mg = bent, polar
B)   eg = trigonal planar, mg = bent, polar
C)   eg = linear, mg = linear, nonpolar
D)   eg = tetrahedral, mg = tetrahedral, nonpolar
E)   eg = trigonal pyramidal, mg = trigonal pyramidal, polarF) D) and E)
G) B) and D)

Question 4

Define bond energy.

Accepted Answer

Bond energy is the e...

Question 5

Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of PCl3.

Accepted Answer

A)   eg = tetrahedral, mg = bent, polar
B)   eg = trigonal planar, mg = trigonal planar, nonpolar
C)   eg = linear, mg = linear, nonpolar
D)   eg = tetrahedral, mg = trigonal pyramidal, polar
E)   eg = trigonal pyramidal, mg = trigonal pyramidal, polarF) A) and B)
G) A) and C)

Question 6

Place the following in order of decreasing dipole moment. I.cis-CHCl = CHCl II.trans-CHCl = CHCI III.cis-CHF = CHF

Accepted Answer

A)   III > I > II
B)   II > I > III
C)   I > III > II
D)   II > III > I
E)   I = III > IIF) C) and D)
G) A) and D)

Question 7

Draw the best Lewis structure for Cl3⁻.What is the formal charge on the central Cl atom?

Accepted Answer

A)   -1
B)   0
C)   +1
D)   +2
E)   -2F) All of the above
G) A) and E)

Question 8

Identify the bond with the highest bond energy.

Accepted Answer

A)   Si = O
B)   N = N
C)   C = C
D)   C = N
E)   O = OF) A) and E)
G) C) and E)

Question 9

The bond angle in H2O is

Accepted Answer

A)   107°
B)   104.5°
C)   120°
D)   109.5°
E)   95°F) D) and E)
G) A) and D)

Question 10

Consider the molecule below.Determine the molecular geometry at each of the 3 labeled atoms.

Accepted Answer

A)   1 = trigonal planar, 2 = tetrahedral, 3 = trigonal pyramidal
B)   1 = tetrahedral, 2 = tetrahedral, 3 = tetrahedral
C)   1 = trigonal planar, 2 = tetrahedral, 3 = tetrahedral
D)   1 = tetrahedral, 2 = tetrahedral, 3 = trigonal planar
E)   1 = trigonal planar, 2 = trigonal pyramidal, 3 = trigonal pyramidalF) A) and E)
G) C) and D)

Question 11

Determine the electron geometry (eg) and molecular geometry (mg) of the underlined carbon in CH3CN.

Accepted Answer

A)   eg = tetrahedral, mg = bent
B)   eg = linear, mg = bent
C)   eg = trigonal planar, mg = tetrahedral
D)   eg = linear, mg = linear
E)   eg = bent, mg = tetrahedralF) A) and B)
G) None of the above

Question 12

Identify the compound with the smallest dipole moment in the gas phase.

Accepted Answer

A)   Cl2
B)   ClF
C)   HF
D)   LiFE) All of the above
F) B) and C)

Question 13

Determine the electron geometry (eg) and molecular geometry (mg) of PF5.

Accepted Answer

A)   eg = trigonal bipyramidal, mg = trigonal bipyramidal
B)   eg = octahedral, mg = octahedral
C)   eg = trigonal bipyramidal, mg = tetrahedral
D)   eg = tetrahedral, mg = trigonal pyramidal
E)   eg = trigonal planar, mg = octahedralF) A) and D)
G) A) and C)

Question 14

Place the following in order of decreasing bond length. H-F H-I H-Br

Accepted Answer

A)   H-F > H-Br > H-I
B)   H-I > H-F > H-Br
C)   H-I > H-Br > H-F
D)   H-Br > H-F > H-I
E)   H-F > H-I > H-BrF) A) and C)
G) C) and D)

Question 15

Place the following elements in order of increasing electronegativity. Li Fr P

Accepted Answer

A)   P 
B)   Li 
C)   Fr 
D)   Fr 
E)   P < Fr < LiF) C) and D)
G) C) and E)

Question 16

Identify the number of electron groups around a molecule with a tetrahedral shape.

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) B) and C)
G) C) and D)

Question 17

Identify the compound with the smallest percent ionic character.

Accepted Answer

A)   HF
B)   IBr
C)   HCl
D)   LiFE) C) and D)
F) B) and C)

Question 18

How many of the following molecules are polar?
PCl5 COS XeO3 SeBr2

Accepted Answer

A)   2
B)   0
C)   1
D)   3
E)   4F) A) and B)
G) A) and E)

Question 19

Place the following in order of increasing bond length. C-F C-S C-Cl

Accepted Answer

A)   C-S 
B)   C-Cl 
C)   C-F 
D)   C-F 
E)   C-S < C-F < C-ClF) None of the above
G) D) and E)

Question 20

Identify the strongest bond.

Accepted Answer

A)   single covalent bond
B)   double covalent bond
C)   triple covalent bond
D)   All of the above bonds are the same strength.E) A) and D)
F) A) and C)

Exam 6: Chemical Bonding I

Draw the best Lewis structure for Cl3⁻.What is the formal charge on the central Cl atom?

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How many of the following molecules are polar? PCl5 COS XeO3 SeBr2

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Identify the compound with the smallest percent ionic character.

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Identify the number of electron groups around a molecule with a tetrahedral shape.

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Determine the electron geometry (eg) and molecular geometry (mg) of PF5.

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Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of SO2.

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Identify the bond with the highest bond energy.

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Identify the strongest bond.

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Determine the electron geometry (eg) and molecular geometry (mg) of the underlined carbon in CH3CN.

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Place the following in order of increasing bond length. C-F C-S C-Cl

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Define bond energy.

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Identify the compound with the smallest dipole moment in the gas phase.

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Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of PCl3.

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Place the following elements in order of increasing electronegativity. Li Fr P

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Place the following in order of decreasing bond length. H-F H-I H-Br

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The bond angle in H2O is

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How many lone pairs of electrons are on the Br atom in BrF4+?

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Place the following in order of decreasing dipole moment. I.cis-CHCl = CHCl II.trans-CHCl = CHCI III.cis-CHF = CHF

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Consider the molecule below.Determine the molecular geometry at each of the 3 labeled atoms.

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Choose the best Lewis structure for NO3⁻.

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Draw the best Lewis structure for Cl₃⁻.What is the formal charge on the central Cl atom?

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How many of the following molecules are polar? PCl₅ COS XeO₃ SeBr₂

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Determine the electron geometry (eg) and molecular geometry (mg) of PF₅.

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Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of SO₂.

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Determine the electron geometry (eg) and molecular geometry (mg) of the underlined carbon in CH₃CN.

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Bond energy is the e...
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Determine the electron geometry (eg) ,molecular geometry (mg) ,and polarity of PCl₃.

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The bond angle in H₂O is

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How many lone pairs of electrons are on the Br atom in BrF₄^+?

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Choose the best Lewis structure for NO₃⁻.

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