Deck 10: Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

Question 1

Which one of the following molecules has tetrahedral geometry

A) XeF₄
B) BF₃
C) AsF₅
D) CF₄
E) NH₃

Answer 1

CF₄

Question 2

Give the number of lone pairs around the central atom and the geometry of the ion ClO₃^-.

A) 0 lone pairs, trigonal
B) 1 lone pair, bent
C) 1 lone pair, trigonal pyramidal
D) 2 lone pairs, T-shaped
E) 2 lone pairs, trigonal

Answer 2

1 lone pair, trigonal pyramidal

Question 3

Give the number of lone pairs around the central atom and the molecular geometry of XeF₂.

A) 0 lone pairs, linear
B) 1 lone pair, bent
C) 2 lone pairs, bent
D) 3 lone pairs, bent
E) 3 lone pairs, linear

Answer 3

3 lone pairs, linear

Question 4

Give the number of lone pairs around the central atom and the geometry of the ion NO₂^-.

A) 0 lone pairs, linear
B) 1 lone pair, bent
C) 2 lone pair, bent
D) 3 lone pairs, bent
E) 3 lone pairs, linear

Question 5

Give the number of lone pairs around the central atom and the molecular geometry of SCl₂.

A) 0 lone pairs, linear
B) 1 lone pair, bent
C) 2 lone pairs, bent
D) 3 lone pairs, bent
E) 3 lone pairs, linear

Question 6

Give the number of lone pairs around the central atom and the molecular geometry of XeF₄.

A) 0 lone pairs, tetrahedral
B) 1 lone pair, distorted tetrahedron (seesaw)
C) 1 lone pair, square pyramidal
D) 1 lone pair, tetrahedral
E) 2 lone pairs, square planar

Question 7

The geometry of the SF₄ molecule is

A) tetrahedral.
B) trigonal pyramidal.
C) trigonal planar.
D) square planar.
E) distorted tetrahedron (seesaw).

Question 8

According to the VSEPR theory, the geometry of the SO₃ molecule is

A) pyramidal.
B) tetrahedral.
C) trigonal planar.
D) distorted tetrahedron (seesaw).
E) square planar.

Question 9

Give the number of lone pairs around the central atom and the geometry of the ion IBr₂^-.

A) 0 lone pairs, linear
B) 1 lone pair, bent
C) 2 lone pairs, bent
D) 3 lone pairs, bent
E) 3 lone pairs, linear

Question 10

According to the VSEPR theory, which one of the following species is linear

A) H₂S
B) HCN
C) BF₃
D) H₂CO
E) SO₂

Question 11

Give the number of lone pairs around the central atom and the geometry of the ion ClO₂^-.

A) 0 lone pairs, linear
B) 1 lone pair, bent
C) 2 lone pairs, bent
D) 3 lone pairs, bent
E) 3 lone pairs, linear

Question 12

Give the number of lone pairs around the central atom and the molecular geometry of IF₅.

A) 0 lone pairs, square pyramidal
B) 0 lone pairs, trigonal bipyramidal
C) 1 lone pair, octahedral
D) 1 lone pair, square pyramidal
E) 2 lone pairs, pentagonal

Question 13

Give the number of lone pairs around the central atom and the molecular geometry of SeF₄.

A) 0 lone pairs, tetrahedral
B) 1 lone pair, distorted tetrahedron (seesaw)
C) 1 lone pair, square pyramidal
D) 1 lone pair, tetrahedral
E) 2 lone pairs, square planar

Question 14

According to the VSEPR theory, the molecular geometry of boron trichloride is

A) linear.
B) trigonal planar.
C) bent.
D) tetrahedral.
E) trigonal pyramidal.

Question 15

The geometry of the ClF₃ molecule is best described as:

A) distorted tetrahedron
B) trigonal planar
C) tetrahedral
D) T-shaped
E) trigonal pyramidal

Question 16

Give the number of lone pairs around the central atom and the molecular geometry of CBr₄.

A) 0 lone pairs, square planar
B) 0 lone pairs, tetahedral
C) 1 lone pair, square pyramidal
D) 1 lone pair, trigonal bipyramidal
E) 2 lone pairs, square planar

Question 17

According to VSEPR theory, which one of the following molecules is trigonal bipyramidal

A) SF₄
B) XeF₄
C) NF₃
D) SF₆
E) PF₅

Question 18

Use VSEPR theory to predict the geometry of the PCl₃ molecule.

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

Question 19

According to the VSEPR theory, the molecular geometry of ammonia is

A) linear.
B) trigonal planar.
C) bent.
D) tetrahedral.
E) trigonal pyramidal.

Question 20

The geometry of the CS₂ molecule is best described as

A) linear.
B) trigonal planar.
C) tetrahedral.
D) bent.
E) trigonal pyramidal.

Question 21

Predict the geometry around the central atom in SO₄^2-.

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

Question 22

The bond angles in CO₃^2- are expected to be

A) a little less than 109.5 ^$\circ$ .
B) 109.5 ^$\circ$ .
C) a little less than 120 ^$\circ$ .
D) 120 ^$\circ$ .
E) a little more than 120 ^$\circ$ .

Question 23

A central atom with 5 electron pairs (single bonds and/or lone pairs of electrons) could have which of the following molecular geometries
I. Trigonal bipyramidal
II. Seesaw
III. T-shaped
IV. Linear

A) I, II, and III
B) II, III, and IV
C) I, III, and IV
D) I, II, and IV
E) I, II, III, and IV

Question 24

A molecule with 5 single bonds (and any number of lone pairs) could have which type of molecular geometry
I. Trigonal bipyramidal
II. Seesaw
III. T-shaped
IV. Square pyramidal

A) I and II
B) I, III, and IV
C) II and III
D) I and IV
E) I, II, III, and IV

Question 25

A central atom with 4 electron pairs (single bonds and/or lone pairs of electrons) could have which of the following molecular geometries
I. Trigonal bipyramidal
II. Tetrahed ral
III. Trigonal pyramidal
IV. Bent

A) I and II
B) II and III
C) II, III, and IV
D) I and IV
E) I, II, and IV

Question 26

A molecule with 2 single bonds and 3 lone pair of electrons is predicted to have which type of moleculary geometry

A) Octahedral
B) T-shaped
C) Seesaw
D) Trigonal bipyramidal
E) Linear

Question 27

A molecule with 4 single bonds (and any number of lone pairs) could have which of the following molecular geometries
I. Tetrahedral
II. Seesaw
III. Square Planar
IV. T-shaped

A) I only
B) I and III
C) II and III
D) I, II, and III
E) I, II, III, and IV

Question 28

The bond angles in ICl₂^- are expected to be

A) a little less than 109.5 ^$\circ$ .
B) 109.5 ^$\circ$ .
C) a little more than 109.5 ^$\circ$ .
D) 120 ^$\circ$ .
E) 180 ^$\circ$ .

Question 29

According to VSEPR theory, which one of the following species has a tetrahedral geometry

A) IF₄⁺
B) IF₄^-
C) PCl₄⁺
D) PCl₄^-
E) SeF₄

Question 30

A molecule with 4 single bonds and 1 lone pair of electrons is predicted to have which type of molecular geometry

A) Octahedral
B) T-shaped
C) Seesaw
D) Trigonal bipyramidal
E) Linear

Question 31

A molecule with 2 single bonds and 2 lone pairs of electrons around the central atom is predicted to have what type of molecular geometry

A) Tetrahedral
B) Trigonal pyramidal
C) Bent
D) Trigonal bipyramidal
E) Linear

Question 32

Which of the following substances is/are bent
(i) H₂S (ii). CO₂ (iii) ClNO (iv) NH₂^- (v) O₃

A) only (iii)
B) (i) and (v)
C) (i), (iii), and (v)
D) (i), (ii), (iii), and (v)
E) (i), (iii), (iv), and (v)

Question 33

A molecule with 3 single bonds (and any number of lone pairs) could have which of the following molecular geometries
I. Trigonal planar
II. Trigonal pyramidal
III. Seesaw
IV. T-shaped

A) I and II
B) II and III
C) II and IV
D) I and III
E) I, II, and IV

Question 34

A molecule with 3 single bonds and 0 lone pairs of electrons is predicted to have which type of molecular geometry

A) Trigonal planar
B) Trigonal pyramidal
C) Bent
D) Trigonal bipyramidal
E) Linear

Question 35

Predict the geometry around the central atom in PO₄^3-.

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

Question 36

The bond angles in SCl₂ are expected to be

A) a little less than 109.5 ^$\circ$ .
B) 109.5 ^$\circ$ .
C) a little more than 109.5 ^$\circ$ .
D) 120 ^$\circ$ .
E) 180 ^$\circ$ .

Question 37

The bond angle in Cl₂O is expected to be approximately

A) 90 ^$\circ$ .
B) 109.5 ^$\circ$ .
C) 120 ^$\circ$ .
D) 145 ^$\circ$ .
E) 180 ^$\circ$ .

Question 38

A molecule with 3 single bonds and 1 lone pair of electrons around the central atom is predicted to have what type of molecular geometry

A) Tetrahedral
B) Trigonal pyramidal
C) Bent
D) Trigonal bipyramidal
E) Linear

Question 39

The bond angles in SF₅⁺ are expected to be

A) 90 ^$\circ$ .
B) 120 ^$\circ$ .
C) 90 ^$\circ$ and 120 ^$\circ$ .
D) 90 ^$\circ$ and 180 ^$\circ$ .
E) 90 ^$\circ$ , 120 ^$\circ$ , and 180 ^$\circ$ .

Question 40

Which of the following substance is/are planar
(i) SO₃ (ii) SO₃^2- (iii) NO₃^- (iv) PF₃ (v) BF₃

A) (i) and (ii)
B) (i), (iii), and (v)
C) (iv)
D) (i), (ii), (iii), and (v)
E) (i), (iii), (iv), and (v)

Question 41

Which one of the following molecules is nonpolar

A) NH₃
B) OF₂
C) CH₃Cl
D) H₂O
E) BeCl₂

Question 42

Which of the following molecules has polar bonds but is a nonpolar molecule

A) PCl₃
B) NCl₃
C) BF₃
D) HF
E) OCl₂

Question 43

Predict the molecular geometry and polarity of the SO₂ molecule.

A) linear, polar
B) linear, nonpolar
C) bent, polar
D) bent, nonpolar
E)None of the above

Question 44

The F -Cl -F bond angles in ClF₃ are expected to be approximately

A) 90 ^$\circ$ only.
B) 109.5 ^$\circ$ only.
C) 120 ^$\circ$ only.
D) 180 ^$\circ$ only.
E) 90 ^$\circ$ and 180 ^$\circ$ .

Question 45

According to the VSEPR theory, the actual F -As -F bond angles in the AsF₄^- ion are predicted to be

A) 109.5 ^$\circ$ .
B) 90 ^$\circ$ and 120 ^$\circ$ .
C) 180 ^$\circ$ .
D) < 109.5 ^$\circ$ .
E) < 90 ^$\circ$ and < 120 ^$\circ$ .

Question 46

The geometry of the hybrid orbitals about a central atom with sp² hybridization is:

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

Question 47

Which of the following molecules has polar bonds but is a nonpolar molecule

A) CO
B) CO₂
C) CHCl₃
D) Cl₂
E) HCl

Question 48

Which one of the following molecules is polar

A) PBr₅
B) CCl₄
C) BrF₅
D) XeF₂
E) XeF₄

Question 49

The geometry of the hybrid orbitals about a central atom with sp³d² hybridization is:

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

Question 50

A sp³d hybridized central atom has what angles between its hybrid orbitals

A) 120 ^$\circ$ only
B) 120 ^$\circ$ and 109.5 ^$\circ$
C) 109.5 ^$\circ$ only
D) 120 ^$\circ$ and 90 ^$\circ$
E) < 90 ^$\circ$ only

Question 51

The F - S - F bond angles in SF₆ are

A) 90 ^$\circ$ and 180 ^$\circ$ .
B) 109.5 ^$\circ$ .
C) 120 ^$\circ$ .
D) 180 ^$\circ$ .
E) 90 ^$\circ$ and 120 ^$\circ$ .

Question 52

The geometry of the hybrid orbitals about a central atom with sp³d hybridization is:

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

Question 53

A sp² hybridized central atom has what angles between its hybrid orbitals

A) 145 ^$\circ$
B) 120 ^$\circ$
C) 109.5 ^$\circ$
D) 90 ^$\circ$
E) < 90 ^$\circ$

Question 54

Which of the following species has the largest dipole moment (i.e., is the most polar)

A) H₂
B) H₂O
C) H₂S
D) H₂Se
E) CH₄

Question 55

Predict the geometry and polarity of the CS₂ molecule.

A) linear, polar
B) linear, nonpolar
C) tetrahedral, nonpolar
D) bent, nonpolar
E) bent, polar

Question 56

The C-N-O bond angle in nitromethane, CH₃NO₂, is expected to be approximately

A) 60 ^$\circ$ .
B) 90 ^$\circ$ .
C) 109.5 ^$\circ$ .
D) 120 ^$\circ$ .
E) 180 ^$\circ$ .

Question 57

Which one of the following molecules has a non-zero dipole moment

A) BeCl₂
B) Br₂
C) BF₃
D) IBr
E) CO₂

Question 58

Which of the following species has the largest dipole moment (i.e., is the most polar)

A) CH₄
B) CH₃Br
C) CH₃Cl
D) CH₃F
E) CH₃I

Question 59

Which one of the following molecules has a zero dipole moment

A) CO
B) CH₂Cl₂
C) SO₃
D) SO₂
E) NH₃

Question 60

N,N-diethyl-m-tolumide (DEET) is the active ingredient in many mosquito repellents. What is the hybridization state of carbon indicated by the arrow in the structure of DEET shown below

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 61

What is the hybridization on the central atom in NO₃^-?

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 62

Ibuprofen is used as an analgesic for the relief of pain, and also to help reduce fever. What is the hybridization state of carbon indicated by the arrow in the structure of ibuprofen shown below

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 63

Indicate the type of hybrid orbitals used by the central atom in CCl₄.

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 64

Ibuprofen is used as an analgesic for the relief of pain, and also to help reduce fever. What is the hybridization state of carbon indicated by the arrow in the structure of ibuprofen shown below

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 65

According to Valence Bond Theory, which orbital is left vacant in the molecule BH₃

A) sp³
B) sp²
C) sp
D) p
E) s

Question 66

What is the hybridization of the As atom in the AsF₅ molecule

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 67

Indicate the type of hybrid orbitals used by the central atom in BrF₃.

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 68

Indicate the type of hybrid orbitals used by the central atom in SF₆.

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 69

Ibuprofen is used as an analgesic for the relief of pain, and also to help reduce fever. What is the hybridization state of oxygen indicated by the arrow in the structure of ibuprofen shown below

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 70

N,N-diethyl-m-tolumide (DEET) is the active ingredient in many mosquito repellents. What is the hybridization state of the nitrogen atom in the structure of DEET shown below

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 71

Indicate the type of hybrid orbitals used by the central atom in PCl₃.

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 72

The hybridization of the central nitrogen atom in the molecule N₂O is

A)sp.
B) sp².
C) sp³.
D) sp³d.
E) sp³d².

Question 73

N,N-diethyl-m-tolumide (DEET) is the active ingredient in many mosquito repellents. What is the hybridization state of carbon indicated by the arrow in the structure of DEET shown below

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 74

N,N-diethyl-m-tolumide (DEET) is the active ingredient in many mosquito repellents. What is the hybridization state of carbon indicated by the arrow in the structure of DEET shown below

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 75

Indicate the type of hybrid orbitals used by the central atom in TeF₄.

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 76

An sp² hybridized central carbon atom with no lone pairs of electrons has what type of bonding

A)1 $\pi$ and 2 $\sigma$ bonds
B)1 $\pi$ and 3 $\sigma$ bonds
C)2 $\pi$ and 2 $\sigma$ bonds
D)3 $\pi$ and 2 $\sigma$ bonds
E)0 $\pi$ and 4 $\sigma$ bonds

Question 77

Ibuprofen is used as an analgesic for the relief of pain, and also to help reduce fever. What is the hybridization state of carbon indicated by the arrow in the structure of ibuprofen shown below

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Question 78

An sp hybridized central carbon atom with no lone pairs of electrons has what type of bonding

A)1 $\pi$ and 2 $\sigma$ bonds
B)1 $\pi$ and 3 $\sigma$ bonds
C)2 $\pi$ and 2 $\sigma$ bonds
D)3 $\pi$ and 2 $\sigma$ bonds
E)0 $\pi$ and 4 $\sigma$ bonds

Question 79

According to Valence Bond Theory which orbital is left vacant in the molecule BF₃

A) sp³
B) sp²
C) sp
D) p
E) s

Question 80

In which one of the following molecules is the central atom sp² hybridized

A) SO₂
B) N₂O
C) BeCl₂
D) NF₃
E) PF₅