Deck 10: Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Question 1

Give the approximate bond angle for a molecule with tetrahedral electron geometry and trigonal pyramidal molecular geometry.

A)180°
B)<180°
C)<109.5°
D)109.5°
E)<120°

Answer 1

<109.5°

Question 2

Give the approximate bond angle for a molecule with an octahedral shape.

A)109.5°
B)180°
C)120°
D)105°
E)90°

Answer 2

90°

Question 3

Determine the electron geometry (eg)and molecular geometry (mg)of SiF₄.

A)eg = tetrahedral, mg = trigonal pyramidal
B)eg = octahedral, mg = square planar
C)eg = trigonal bipyramidal, mg = trigonal pyramidal
D)eg = tetrahedral, mg = bent
E)eg = tetrahedral, mg = tetrahedral

Answer 3

eg = tetrahedral, mg = tetrahedral

Question 4

Give the approximate bond angle between two equatorial positions for a molecule with a trigonal bipyramidal geometry.

A)109.5°
B)180°
C)120°
D)105°
E)90°

Question 5

Give the approximate bond angle for a molecule with trigonal bipyramidal electron geometry and seesaw molecular geometry.

A)<120° (equatorial), 90° (axial)
B)120° (equatorial), <90° (axial)
C)<90° (equatorial), <90° (axial)
D)120° (equatorial), 90° (axial)
E)<120° (equatorial), <90° (axial)

Question 6

Give the approximate bond angle for a molecule with T-shape molecular geometry.

A)<90°
B)90°
C)>90°
D)<120°
E)120°

Question 7

Give the approximate bond angle for a molecule with trigonal planar electron geometry and bent molecular geometry.

A)<90°
B)90°
C)<120°
D)<109.5°
E)120°

Question 8

Determine the electron geometry (eg)and molecular geometry (mg)of CH₃⁺¹.

A)eg = tetrahedral, mg = tetrahedral
B)eg = tetrahedral, mg = trigonal pyramidal
C)eg = trigonal planar, mg = bent
D)eg = trigonal planar, mg = trigonal planar
E)eg = tetrahedral, mg = trigonal planar

Question 9

Determine the electron geometry (eg)and molecular geometry (mg)of NCl₃.

A)eg = tetrahedral, mg = tetrahedral
B)eg = linear, mg = trigonal planar
C)eg = trigonal planar, mg = bent
D)eg = linear, mg = linear
E)eg = tetrahedral, mg = trigonal pyramidal

Question 10

Determine the electron geometry (eg)and molecular geometry (mg)of CO₂.

A)eg = tetrahedral, mg = tetrahedral
B)eg = linear, mg = trigonal planar
C)eg = trigonal planar, mg = bent
D)eg = linear, mg = linear
E)eg = trigonal planar, mg = trigonal planar

Question 11

Determine the electron geometry (eg)and molecular geometry (mg)of CO₃²⁻.

A)eg = tetrahedral, mg = tetrahedral
B)eg = tetrahedral, mg = trigonal pyramidal
C)eg = trigonal planar, mg = bent
D)eg = trigonal planar, mg = trigonal planar
E)eg = tetrahedral, mg = trigonal planar

Question 12

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

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 = octahedral

Question 13

Determine the electron geometry (eg)and molecular geometry (mg)of BCl₃.

A)eg = trigonal planar, mg = trigonal planar
B)eg = tetrahedral, mg = trigonal planar
C)eg = tetrahedral, mg = trigonal pyramidal
D)eg = trigonal planar, mg = bent
E)eg = trigonal bipyramidal, mg = trigonal bipyramidal

Question 14

Give the approximate bond angle for a molecule with a linear shape.

A)109.5°
B)180°
C)120°
D)105°
E)90°

Question 15

Give the approximate bond angle for a molecule with octahedral electron geometry and square pyramidal molecular geometry.

A)90°
B)180°
C)>120°
D)<90°
E)>90°

Question 16

Give the approximate bond angle between the axial position and the equatorial position for a molecule with a trigonal bipyramidal geometry.

A)109.5°
B)180°
C)120°
D)105°
E)90°

Question 17

Give the approximate bond angle for a molecule with trigonal bipyramidal electron geometry and linear molecular geometry.

A)180°
B)<180°
C)>180°
D)<109.5°
E)<120°

Question 18

Give the approximate bond angle for a molecule with tetrahedral electron geometry and bent molecular geometry.

A)180°
B)<180°
C)<109.5°
D)109.5°
E)<120°

Question 19

Give the approximate bond angle for a molecule with a trigonal planar shape.

A)109.5°
B)180°
C)120°
D)105°
E)90°

Question 20

Give the approximate bond angle for a molecule with a tetrahedral shape.

A)109.5°
B)180°
C)120°
D)105°
E)90°

Question 21

Determine the electron geometry for the molecule SBr₂.

A)Linear
B)Trigonal planar
C)Tetrahedral
D)Trigonal bipyramidal
E)Octahedral

Question 22

Determine the electron geometry for the molecule PCl₅.

A)Linear
B)Trigonal planar
C)Tetrahedral
D)Trigonal bipyramidal
E)Octahedral

Question 23

Determine the molecular geometry for the molecule XeF₄.

A)Square planar
B)Tetrahedral
C)T-shaped
D)Square pyramidal
E)Trigonal planar

Question 24

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined atom CH₃OCH₃.

A)eg = tetrahedral, mg = tetrahedral
B)eg = linear, mg = linear
C)eg = tetrahedral, mg = bent
D)eg = trigonal bipyramidal, mg = tetrahedral
E)eg = octahedral, mg = square planar

Question 25

Determine the electron geometry (eg)and molecular geometry (mg)of the underlined atom CH₃OCH₃.

A)eg = tetrahedral, mg = tetrahedral
B)eg = linear, mg = linear
C)eg = tetrahedral, mg = bent
D)eg = trigonal bipyramidal, mg = tetrahedral
E)eg = octahedral, mg = square planar

Question 26

Determine the electron geometry for the molecule XeF₄.

A)Linear
B)Trigonal planar
C)Tetrahedral
D)Trigonal bipyramidal
E)Octahedral

Question 27

Consider the molecule below. Determine the molecular geometry at each of the two labelled carbons.

A)C1 = tetrahedral, C2 = linear
B)C1 = trigonal planar, C2 = bent
C)C1 = bent, C2 = trigonal planar
D)C1 = trigonal planar, C2 = tetrahedral
E)C1 = trigonal pyramidal, C2 = seesaw

Question 28

Determine the molecular geometry for the molecule CS₂.

A)Trigonal planar
B)Bent
C)Linear
D)T-shaped
E)Square planar

Question 29

Determine the molecular geometry for the molecule PF₃.

A)Trigonal pyramidal
B)Trigonal planar
C)Tetrahedral
D)T-shaped
E)Bent

Question 30

Give the approximate bond angle for a molecule with octahedral electron geometry and square planar molecular geometry.

A)90°
B)180°
C)>120°
D)<90°
E)<120°

Question 31

Determine the electron geometry (eg)and molecular geometry (mg)of ICl₂⁻.

A)eg = tetrahedral, mg = bent
B)eg = tetrahedral, mg = trigonal pyramidal
C)eg = trigonal bipyramidal, mg = linear
D)eg = trigonal bipyramidal, mg = trigonal planar
E)eg = octahedral, mg = linear

Question 32

Determine the electron geometry for the molecule BrF₃.

A)Linear
B)Trigonal planar
C)Tetrahedral
D)Trigonal bipyramidal
E)Octahedral

Question 33

Determine the electron geometry (eg)and molecular geometry (mg)of XeF₄.

A)eg = tetrahedral, mg = tetrahedral
B)eg = linear, mg = linear
C)eg = tetrahedral, mg = bent
D)eg = trigonal bipyramidal, mg = tetrahedral
E)eg = octahedral, mg = square planar

Question 34

Determine the electron geometry (eg)and molecular geometry (mg)of BrF₃.

A)eg = trigonal planar, mg = trigonal planar
B)eg = trigonal bipyramidal, mg = T-shape
C)eg = trigonal planar, mg = bent
D)eg = trigonal bipyramidal, mg = seesaw
E)eg = tetrahedral, mg = trigonal pyramidal

Question 35

Determine the molecular geometry for the molecule PCl₅.

A)Linear
B)Seesaw
C)Square pyramidal
D)Trigonal bipyramidal
E)Square planar

Question 36

Determine the electron geometry (eg)and molecular geometry (mg)of XeF₂.

A)eg = trigonal bipyramidal, mg = bent
B)eg = linear, mg = linear
C)eg = tetrahedral, mg = linear
D)eg = trigonal bipyramidal, mg = linear
E)eg = tetrahedral, mg = bent

Question 37

Determine the molecular geometry for the molecule BrF₃.

A)Square pyramidal
B)Seesaw
C)T-shaped
D)Square planar
E)Trigonal planar

Question 38

Determine the molecular geometry for the molecule SBr₂.

A)Trigonal pyramidal
B)Trigonal planar
C)Tetrahedral
D)T-shaped
E)Bent

Question 39

Determine the electron geometry for the molecule CS₂.

A)Linear
B)Trigonal planar
C)Tetrahedral
D)Trigonal bipyramidal
E)Octahedral

Question 40

Determine the electron geometry for the molecule PF₃.

A)Linear
B)Trigonal planar
C)Tetrahedral
D)Trigonal bipyramidal
E)Octahedral

Question 41

Choose the compound below that contains at least one polar covalent bond but is nonpolar.

A)GeH₂Br₂
B)SCl₂
C)AsCl₅
D)CF₂Cl₂
E)All of the above are nonpolar and contain a polar covalent bond.

Question 42

Determine the electron geometry (eg), molecular geometry (mg), and polarity of SF₆.

A)eg = trigonal bipyramidal, mg = trigonal bipyramidal, nonpolar
B)eg = tetrahedral, mg = tetrahedral, polar
C)eg = trigonal bipyramidal, mg = seesaw, polar
D)eg = octahedral, mg = trigonal bipyramidal, nonpolar
E)eg = octahedral, mg = octahedral, nonpolar

Question 43

Determine the electron geometry (eg), molecular geometry (mg), and polarity of SO₃.

A)eg = tetrahedral, mg = trigonal pyramidal, polar
B)eg = tetrahedral, mg = tetrahedral, nonpolar
C)eg = trigonal planar, mg = trigonal planar, nonpolar
D)eg = trigonal bipyramidal, mg = trigonal planar, polar
E)eg = trigonal pyramidal, mg = bent, nonpolar

Question 44

Determine the electron geometry (eg), molecular geometry (mg), and polarity of TeCl₆.

A)eg = octahedral, mg = octahedral, nonpolar
B)eg = trigonal bipyramidal, mg = trigonal bipyramidal, nonpolar
C)eg = octahedral, mg = square planar, polar
D)eg = trigonal bipyramidal, mg = seesaw, polar
E)eg = tetrahedral, mg = trigonal pyramidal, polar

Question 45

Place the following in order of increasing F-A-F bond angle, where A represents the central atom in each molecule. PF₃ OF₂ PF₄⁺

A)PF₃ < OF₂ < PF₄⁺
B)OF₂ < PF₃ < PF₄⁺
C)OF₂ < PF₄⁺ < PF₃
D)PF₄⁺ < OF₂ < PF₃
E)PF₄⁺ < PF₃ < OF₂

Question 46

How many of the following molecules are polar? XeCl₂ COF₂ PCl₄F SF₆

A)0
B)3
C)1
D)2
E)4

Question 47

Place the following in order of decreasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule. CS₂ CF₄ SCl₂

A)CS₂ > SCl₂ > CF₄
B)SCl₂ > CF₄ > CS₂
C)CF₄ > SCl₂ > CS₂
D)CS₂ > CF₄ > SCl₂
E)CF₄ > CS₂ > SCl₂

Question 48

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

A)2
B)0
C)1
D)3
E)4

Question 49

How many of the following molecules are polar? BrCl₃ CS₂ SiF₄ SO₃

A)1
B)2
C)3
D)4
E)0

Question 50

Place the following in order of increasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule. HCN H₂O H₃O⁺

A)H₃O⁺ < HCN < H₂O
B)H₃O⁺ < H₂O < HCN
C)HCN < H₃O⁺ < H₂O
D) H₂O < HCN < H₃O⁺
E)H₂O < H₃O⁺ < HCN

Question 51

Place the following in order of decreasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule. N₂O NCl₃ NO₂⁻

A)NCl₃ > NO₂⁻ > N₂O
B)NO₂⁻ > N₂O > NCl₃
C)N₂O > NO₂⁻ > NCl₃
D)NCl₃ > N₂O > NO₂⁻
E)N₂O > NCl₃ > NO₂⁻

Question 52

How many of the following molecules are polar? XeO₂ SiCl₂Br₂ C₂Br₂ SeCl₆

A)1
B)4
C)2
D)3
E)0

Question 53

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

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, polar

Question 54

Determine the electron geometry (eg), molecular geometry (mg), and polarity of HBrO₂.

A)eg = trigonal bipyramidal, mg = trigonal planar, nonpolar
B)eg = octahedral, mg = square planar, nonpolar
C)eg = tetrahedral, mg = bent, polar
D)eg = tetrahedral, mg = linear, nonpolar
E)eg = linear, mg = linear, polar

Question 55

Determine the electron geometry (eg), molecular geometry (mg), and polarity of XeO₃.

A)eg = trigonal planar, mg = trigonal planar, nonpolar
B)eg = tetrahedral, mg = trigonal pyramidal, polar
C)eg = trigonal planar, mg = trigonal pyramidal, polar
D)eg = trigonal bipyramidal, mg = trigonal planar, nonpolar
E)eg = octahedral, mg = tetrahedral, nonpolar

Question 56

Place the following in order of increasing X-Se-X bond angle, where X represents the outer atoms in each molecule. SeO₂ SeCl₆ SeF₂

A)SeCl₆ < SeF₂ < SeO₂
B)SeF₂ < SeO₂ < SeCl₆
C)SeF₂ < SeCl₆ < SeO₂
D)SeO₂ < SeF₂ < SeCl₆
E)SeCl₆ < SeO₂ < SeF₂

Question 57

A pilot checks for water in the gas before flying a small airplane. How does she do it?

A)She drains a little bit of gas from the bottom and looks for two layers.
B)She smells it.
C)She shakes the wings.
D)She pipets the liquid from the top of the tank and looks for two layers.
E)She checks the gas gauge.

Question 58

Consider the molecule below. Determine the molecular geometry at each of the three labelled atoms.

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 pyramidal

Question 59

Determine the electron geometry (eg), molecular geometry (mg), and polarity of SF₆.

A)eg = trigonal bipyramidal, mg = trigonal bipyramidal, nonpolar
B)eg = tetrahedral, mg = tetrahedral, polar
C)eg = trigonal bipyramidal, mg = seesaw, polar
D)eg = octahedral, mg = trigonal bipyramidal, nonpolar
E)eg = octahedral, mg = octahedral, nonpolar

Question 60

Choose the compound below that contains at least one polar covalent bond but is nonpolar.

A)HCN
B)CF₄
C)SeBr₄
D)ICl₃
E)Both B and C are nonpolar and contain a polar covalent bond.

Question 61

A molecule containing a central atom with sp² hybridization has a ________ electron geometry.

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

Question 62

A molecule containing a central atom with sp³ hybridization has a(n)________ electron geometry.

A)linear
B)trigonal bipyramidal
C)octahedral
D)tetrahedral
E)bent

Question 63

Determine the electron geometry (eg), molecular geometry (mg), and polarity of N₂O (N central).

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

Question 64

Identify the number of electron groups around a molecule with sp² hybridization.

A)1
B)2
C)3
D)4
E)5

Question 65

Determine the electron geometry (eg)and molecular geometry (mg)of H₂CO.

A)eg = tetrahedral, mg = tetrahedral
B)eg = linear, mg = trigonal planar
C)eg = trigonal planar, mg = bent
D)eg = linear, mg = linear
E)eg = trigonal planar, mg = trigonal planar

Question 66

Draw the Lewis structure for SO₃. What is the hybridization on the S atom?

A)sp
B)sp³
C)sp²
D)sp^3d
E)sp³d²

Question 67

Describe a sigma bond.

A)side by side overlap of p orbitals
B)end to end overlap of p orbitals
C)side by side overlap of d orbitals
D)overlap of two s orbitals
E)p orbital overlapping with a d orbital

Question 68

Place the following in order of increasing dipole moment. I. BCl₃ II. BIF₂ III. BClF₂

A)I < II = III
B)II < III < I
C)I < II < III
D)II < I < III
E)I < III < II

Question 69

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

A)III > I > II
B)II > I > III
C)I > III > II
D)II > III > I
E)I = III > II

Question 70

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

A)eg = tetrahedral, mg = tetrahedral
B)eg = linear, mg = trigonal planar
C)eg = trigonal planar, mg = bent
D)eg = linear, mg = linear
E)eg = trigonal planar, mg = trigonal planar

Question 71

Describe a pi bond.

A)side by side overlap of p orbitals
B)end to end overlap of p orbitals
C)s orbital overlapping with the end of a p orbital
D)overlap of two s orbitals
E)p orbital overlapping with a d orbital

Question 72

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

A)1
B)2
C)3
D)4
E)5

Question 73

A molecule containing a central atom with sp^3d hybridization has a(n)________ electron geometry.

A)tetrahedral
B)linear
C)octahedral
D)trigonal planar
E)trigonal bipyramidal

Question 74

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

A)eg = tetrahedral, mg = tetrahedral
B)eg = linear, mg = trigonal planar
C)eg = trigonal planar, mg = bent
D)eg = linear, mg = linear
E)eg = trigonal planar, mg = trigonal planar

Question 75

Draw the Lewis structure for H₃O⁺. What is the hybridization on the O atom?

A)sp
B)sp³
C)sp²
D)sp^3d
E)sp^3d2

Question 76

Identify the number of electron groups around a molecule with sp hybridization.

A)1
B)2
C)3
D)4
E)5

Question 77

Draw the Lewis structure for OF₂. What is the hybridization on the O atom?

A)sp
B)sp³
C)sp²
D)sp^3d
E)sp^3d2

Question 78

A molecule containing a central atom with eight electron groups has a(n)________ electron geometry.

A)octahedral
B)trigonal bipyramidal
C)tetrahedral
D)trigonal planar
E)trigonal pyramidal

Question 79

A molecule containing a central atom with sp hybridization has a ________ electron geometry.

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

Question 80

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

A)1
B)2
C)3
D)4
E)5