Question 1

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

Accepted Answer

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 
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 2

Using periodic trends, arrange the following molecules in order of increasing dipole moment: NH3, PH3, AsH3.

Accepted Answer

A)  AsH3 3 3 
B)  PH3 3 3 
C)  NH3 3 3 
D)  AsH3 3 3 
E) None of the above 
A)  AsH3 3 3 
B)  PH3 3 3 
C)  NH3 3 3 
D)  AsH3 3 3 
E) None of the above

Question 3

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

Accepted Answer

A)  PCl3 
B)  NCl3 
C)  BF3 
D)  HF 
E)  OCl2 
A)  PCl3 
B)  NCl3 
C)  BF3 
D)  HF 
E)  OCl2

Question 4

CO2 is nonpolar, but OCS is polar.

Accepted Answer

A) True 
 B)False

Question 5

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

Accepted Answer

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

Question 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

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 
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 8

Consider the species O2-, O2, and O2+. Which of these species will be paramagnetic

Accepted Answer

A)  O2 and O2- 
B)  O2+ and O2 
C)  O2+ and O2- 
D)  only O2 
E)  all three are paramagnetic 
A)  O2 and O2- 
B)  O2+ and O2 
C)  O2+ and O2- 
D)  only O2 
E)  all three are paramagnetic

Question 9

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

Accepted Answer

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

Question 10

Predict the molecular geometry and polarity of the SO2 molecule.

Accepted Answer

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

Question 11

A species with a bond order of 1/2 may be stable.

Accepted Answer

A) True 
 B)False

Question 12

Predict the geometry and polarity of the CS2 molecule.

Accepted Answer

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

Question 13

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

Accepted Answer

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 
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 14

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

Accepted Answer

A)  H2 
B)  H2O 
C)  H2S 
D)  H2Se 
E)  CH4 
A)  H2 
B)  H2O 
C)  H2S 
D)  H2Se 
E)  CH4

Question 15

Which bond angles are present in a molecule with an octahedral geometry

Accepted Answer

A)  45$\circ$ 
B)  90$\circ$ 
C)  120$\circ$ 
D)  depends on the type of atoms in the octehedron 
E) None of the above 
A)  45$\circ$ 
B)  90$\circ$ 
C)  120$\circ$ 
D)  depends on the type of atoms in the octehedron 
E) None of the above

Question 16

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

Accepted Answer

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 
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

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

Accepted Answer

A)  only (iii) 
B)  (i) and (v) 
C)  (i), (iii), and (v) 
D)  (i), (ii), (iii), and (v) 
E)  (i), (iii), (iv), and (v) 
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 18

Predict the geometry around the central atom in SO42-.

Accepted Answer

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

Question 19

A molecule with polar bonds must be a polar molecule in all cases.

Accepted Answer

A) True 
 B)False

Question 20

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

Accepted Answer

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

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

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

Using periodic trends, arrange the following molecules in order of increasing dipole moment: NH3, PH3, AsH3.

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

CO2 is nonpolar, but OCS is polar.

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

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

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

Consider the species O2-, O2, and O2+. Which of these species will be paramagnetic

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

Predict the molecular geometry and polarity of the SO2 molecule.

A species with a bond order of 1/2 may be stable.

Predict the geometry and polarity of the CS2 molecule.

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

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

Which bond angles are present in a molecule with an octahedral geometry

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

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

Predict the geometry around the central atom in SO42-.

A molecule with polar bonds must be a polar molecule in all cases.

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

Chemistry: The Study of Change

Atoms Molecules and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metals Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

Using periodic trends, arrange the following molecules in order of increasing dipole moment: NH₃, PH₃, AsH₃.

CO₂ is nonpolar, but OCS is polar.

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

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

Consider the species O₂^-, O₂, and O₂⁺. Which of these species will be paramagnetic

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

Predict the molecular geometry and polarity of the SO₂ molecule.

Predict the geometry and polarity of the CS₂ molecule.

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

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

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

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