Question 1

Match the following.

-sp3d2

Accepted Answer

A) tetrahedral 
B) nonpolar, but contains a polar covalent bond 
C) sp hybridized central atom 
D) trigonal bipyramidal 
E) trigonal planar
F)polar
G)linear
H)seesaw molecular geometry
I)octahedral
J)octahedral electron geometry
K)polar, but contains no polar bonds
L)sp2 hybridized central atom 
A) tetrahedral 
B) nonpolar, but contains a polar covalent bond 
C) sp hybridized central atom 
D) trigonal bipyramidal 
E) trigonal planar
F)polar
G)linear
H)seesaw molecular geometry
I)octahedral
J)octahedral electron geometry
K)polar, but contains no polar bonds
L)sp2 hybridized central atom

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

A) 90° B) 180° C) >120° D) <90° E) <120° A) 90° B) 180° C) >120° D) <90° E) <120°

Question 4

Draw the Lewis structure for the molecule C3H4. How many sigma and pi bonds does it contain?

Accepted Answer

A) 7 sigma, 1 pi 
B) 8 sigma, 0 pi 
C) 6 sigma, 2 pi 
D) 10 sigma, 0 pi 
E) 8 sigma, 2 pi 
A) 7 sigma, 1 pi 
B) 8 sigma, 0 pi 
C) 6 sigma, 2 pi 
D) 10 sigma, 0 pi 
E) 8 sigma, 2 pi

Question 5

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

Accepted Answer

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

Question 6

Explain why oil and water do not mix.

Accepted Answer

Water molecules are

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

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) 
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 9

The orbital hybridization on the carbon atoms in C2H2  is ________.

Accepted Answer

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

Question 10

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

Accepted Answer

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 
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 11

Use the molecular orbital diagram shown to determine which of the following is least stable.

Accepted Answer

A) F2 
B) F22⁺ 
C) Ne22⁺ 
D) O22⁺ 
E) F21⁻ 
A) F2 
B) F22⁺ 
C) Ne22⁺ 
D) O22⁺ 
E) F21⁻

Question 12

The hybrid orbital set used by the central atom in NCl3 is ________.

Accepted Answer

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

Question 13

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

Accepted Answer

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 
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 14

What is the molecular geometry of NCl3?

Accepted Answer

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

Question 15

Use the molecular orbital diagram shown to determine which of the following is most stable.

Accepted Answer

A) F2 
B) F22⁺ 
C) Ne22⁺ 
D) O22⁺ 
E) F22⁻ 
A) F2 
B) F22⁺ 
C) Ne22⁺ 
D) O22⁺ 
E) F22⁻

Question 16

In molecular orbital theory the acronym LCAO stands for

Accepted Answer

A) linear combination of atomic orbitals. 
B) lowest combined atomic orbitals. 
C) least consumed advanced orientation. 
D) linearly created available orbital. 
E) It has no meaning. 
A) linear combination of atomic orbitals. 
B) lowest combined atomic orbitals. 
C) least consumed advanced orientation. 
D) linearly created available orbital. 
E) It has no meaning.

Question 17

Using the VSEPR model, the molecular geometry of the central atom in XeF2 is ________.

Accepted Answer

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

Question 18

Using the VSEPR model, the electron-domain geometry of the central atom in SF4 is ________.

Accepted Answer

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

Question 19

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

Accepted Answer

A) <90° 
B) 90° 
C) <120° 
D) <109.5° 
E) 120° 
A) <90° 
B) 90° 
C) <120° 
D) <109.5° 
E) 120°

Question 20

Determine the molecular geometry for the molecule SBr2.

Accepted Answer

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

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

Match the following. -sp3d2

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

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

Draw the Lewis structure for the molecule C3H4. How many sigma and pi bonds does it contain?

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

Explain why oil and water do not mix.

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

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

The orbital hybridization on the carbon atoms in C2H2 is ________.

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

Use the molecular orbital diagram shown to determine which of the following is least stable.

The hybrid orbital set used by the central atom in NCl3 is ________.

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

What is the molecular geometry of NCl3?

Use the molecular orbital diagram shown to determine which of the following is most stable.

In molecular orbital theory the acronym LCAO stands for

Using the VSEPR model, the molecular geometry of the central atom in XeF2 is ________.

Using the VSEPR model, the electron-domain geometry of the central atom in SF4 is ________.

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

Determine the molecular geometry for the molecule SBr2.

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallury

Transition Metals and Coordination Compounds

Filters

Match the following. -sp³d²

Draw the Lewis structure for the molecule C₃H₄. How many sigma and pi bonds does it contain?

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

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

The orbital hybridization on the carbon atoms in C₂H₂ is ________.

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

The hybrid orbital set used by the central atom in NCl₃ is ________.

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

What is the molecular geometry of NCl₃?

Using the VSEPR model, the molecular geometry of the central atom in XeF₂ is ________.

Using the VSEPR model, the electron-domain geometry of the central atom in SF₄ is ________.

Determine the molecular geometry for the molecule SBr₂.