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

Question 1

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°

Answer 1

120°

Question 2

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°

Answer 2

<120°

Question 3

Give the approximate bond angle in H₂O.

A) 109.5°
B) 180°
C) 120.5°
D) 104.5°
E) 90.5°

Answer 3

104.5°

Question 4

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 5

Give the approximate bond angle in CH₄.

A) 109.5°
B) 180°
C) 120.5°
D) 104.5°
E) 90.5°

Question 6

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 7

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 8

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°

Question 9

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 10

Determine the electron geometry (eg) and molecular geometry (mg) of BeCl₂.

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 11

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 12

Which of the following statements is TRUE?

A) Ammonia has trigonal planar electron geometry and tetrahedral molecular geometry.
B) Ammonia has tetrahedral electron geometry and trigonal pyramidal molecular geometry.
C) Ammonia has trigonal pyramidal electron geometry and tetrahedral molecular geometry.
D) Ammonia has trigonal planar electron geometry and trigonal bipyramidal molecular geometry.

Question 13

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

A) 109.5°
B) 180°
C) 120°
D) 105°
E) 90°

Question 14

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

Question 15

Which of the following statements is FALSE?

A) VSEPR theory is based on the simple idea that electron groups repel each other.
B) The preferred geometry of a molecule is the one in which the electron groups have minimum separation.
C) CO₂ has linear electron and molecular geometry.
D) BF₃ has trigonal planar electron and molecular geometry.

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 a tetrahedral shape.

A) 109.5°
B) 180°
C) 120°
D) 105°
E) 90°

Question 18

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 19

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

A) 109.5°
B) 180°
C) 120°
D) 105°
E) 90°

Question 20

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

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 21

Determine the molecular geometry for the molecule CS₂.

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

Question 22

Determine the electron geometry for the molecule PF₃.

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

Question 23

Determine the electron geometry for the molecule SBr₂.

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

Question 24

Determine the molecular geometry for the molecule PCl₅.

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

Question 25

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 26

Determine the molecular geometry for the molecule XeF₄.

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

Question 27

Determine the electron geometry for the molecule BrF₃.

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

Question 28

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 29

Determine the molecular geometry for the molecule PF₃.

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

Question 30

Determine the electron geometry for the molecule PCl₅.

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

Question 31

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

A) <90°
B) 90°
C) >90°
D) <120°
E) 120°

Question 32

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 33

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 34

Determine the electron geometry for the molecule XeF₄.

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

Question 35

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 36

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 37

Determine the electron geometry for the molecule CS₂.

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

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 molecular geometry for the molecule BrF₃.

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

Question 40

Determine the electron geometry (eg) and molecular geometry (mg) of BrF₅.

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

Question 41

Determine the electron geometry (eg) and molecular geometry (mg) of the bolded and 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 42

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 43

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 44

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 45

Determine the electron geometry (eg) and molecular geometry (mg) of IBr₄^-.

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

Question 46

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 47

Determine the molecular geometry (mg) of the bolded and underlined atom CH₃CH₂NH₂.

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

Question 48

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 49

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 50

Determine the electron geometry (eg) and molecular geometry (mg) of the bolded and 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 51

Determine the molecular geometry (mg) of the bolded and underlined atom CH₃CH₂OH.

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

Question 52

Determine the molecular geometry (mg) of the bolded and underlined atom CH₃CO₂H.

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

Question 53

Determine the molecular geometry (mg) of the bolded and underlined atom CH₃CH₂OH.

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

Question 54

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 55

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 56

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 57

Determine the electron geometry (eg) and molecular geometry (mg) of ClF₃.

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

Question 58

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

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

Question 59

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 60

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 61

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 62

Describe a sigma bond.

A) p orbital overlapping with a d orbital
B) an attraction due to overlap of two orbitals along the internuclear axis
C) side by side overlap of d orbitals
D) overlap of two d orbitals
E) s orbital overlapping with the side of a p orbital

Question 63

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

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

Question 64

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 65

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 66

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 67

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 68

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 69

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

A) HCN
B) CF₄
C) SeBr₄
D) ICl₃

Question 70

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 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 sp hybridization.

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

Question 73

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

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

Question 74

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 75

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 76

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 77

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

A) GeH₂Br₂
B) SCl₂
C) AsCl₅
D) CF₂Cl₂

Question 78

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

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

Question 79

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 80

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

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