Question 1

Using the VSEPR model, the electron-domain geometry of the central atom in ClF3 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 2

Of the following species, ________ will have bond angles of 120°.

Accepted Answer

A) PH3 
B) ClF3 
C) NCl3 
D) BCl3 
E) All of these will have bond angles of 120°. 
A) PH3 
B) ClF3 
C) NCl3 
D) BCl3 
E) All of these will have bond angles of 120°.

Question 3

The hybridization of the oxygen atom labeled y in the structure below is ________. The C-O-H bond angle is ________.

Accepted Answer

A) sp, 180° 
B) sp2, 109.5° 
C) sp3, 109.5° 
D) sp3d2, 90° 
E) sp, 90° 
A) sp, 180° 
B) sp2, 109.5° 
C) sp3, 109.5° 
D) sp3d2, 90° 
E) sp, 90°

Question 4

The molecular geometry of the left-most carbon atom in the molecule below is ________.

Accepted Answer

A) trigonal planar 
B) trigonal bipyramidal 
C) tetrahedral 
D) octahedral 
E) T-shaped 
A) trigonal planar 
B) trigonal bipyramidal 
C) tetrahedral 
D) octahedral 
E) T-shaped

Question 5

The electron-domain geometry and the molecular geometry of a molecule of the general formula ABn are ________.

Accepted Answer

A) never the same 
B) always the same 
C) sometimes the same 
D) not related 
E) mirror images of one another 
A) never the same 
B) always the same 
C) sometimes the same 
D) not related 
E) mirror images of one another

Question 6

The hybrid orbital set used by the central atom in SO3 is ________.

Accepted Answer

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

Question 7

The sensation of vision results from a nerve impulse that is triggered by the separation of retinal from ________.

Accepted Answer

The answer of The sensation of vision results from a...

Question 8

The Lewis structure of carbon monoxide is given below. The hybridizations of the carbon and oxygen atoms in carbon monoxide are ________ and ________, respectively. : C ≡ O :

Accepted Answer

A) sp, sp3 
B) sp2, sp3 
C) sp3, sp2 
D) sp, sp 
E) sp2, sp2 
A) sp, sp3 
B) sp2, sp3 
C) sp3, sp2 
D) sp, sp 
E) sp2, sp2

Question 9

Using the VSEPR model, the molecular geometry of the central atom in IF5 is ________.

Accepted Answer

A) tetrahedral 
B) square planar 
C) square pyramidal 
D) seesaw 
E) trigonal bipyramidal 
A) tetrahedral 
B) square planar 
C) square pyramidal 
D) seesaw 
E) trigonal bipyramidal

Question 10

The hybrid orbital set used by the central atom in ClO2- is ________.

Accepted Answer

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

Question 11

Molecular Orbital theory correctly predicts paramagnetism of oxygen gas, O2. This is because ________.

Accepted Answer

A) the bond order in O2 can be shown to be equal to 2. 
B) there are more electrons in the bonding orbitals than in the antibonding orbitals. 
C) the energy of the π2p MOs is higher than that of the σ2p MO 
D) there are two unpaired electrons in the MO electron configuration of O2 
E) the O-O bond distance is relatively short 
A) the bond order in O2 can be shown to be equal to 2. 
B) there are more electrons in the bonding orbitals than in the antibonding orbitals. 
C) the energy of the π2p MOs is higher than that of the σ2p MO 
D) there are two unpaired electrons in the MO electron configuration of O2 
E) the O-O bond distance is relatively short

Question 12

The more unpaired electrons in a species, the stronger is the force of magnetic attraction. This is called ________.

Accepted Answer

The answer of The more unpaired electrons in a species,...

Question 13

The highest energy occupied molecular orbital in the F-F bond of the F2 molecule is _____.

Accepted Answer

A) π*2s 
B) π2s 
C) σ*1p 
D) π*2p 
E) π2p 
A) π*2s 
B) π2s 
C) σ*1p 
D) π*2p 
E) π2p

Question 14

The bond order of any molecule containing equal numbers of bonding and antibonding electrons is ________.

Accepted Answer

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

Question 15

Of the following, the central atom is sp3d2 hybridized only in ________.

Accepted Answer

A) PCl5 
B) XeF4 
C) PH3 
D) Br3- 
E) BeF2 
A) PCl5 
B) XeF4 
C) PH3 
D) Br3- 
E) BeF2

Question 16

In the valence shell of an atom there are six electron domains. They will be arranged in a(n)________ geometry.

Accepted Answer

The answer of In the valence shell of an atom...

Question 17

The central atom in a certain molecule has 1 nonbonded electron pairs and 2 bonded electron pairs in its valence shell. The molecular geometry of this molecule is ________.

Accepted Answer

A) tetrahedral 
B) bent 
C) seesaw 
D) trigonal bipyrimidal 
E) trigonal pyramidal 
A) tetrahedral 
B) bent 
C) seesaw 
D) trigonal bipyrimidal 
E) trigonal pyramidal

Question 18

Which of the following molecules or ions will exhibit delocalized bonding? NO2- NH4+ N3-

Accepted Answer

A)  NH4+ and N3- 
B) NO2- only 
C) NO2-, NH4+, and N3- 
D) N3- only 
E) NO2- and N3- 
A)  NH4+ and N3- 
B) NO2- only 
C) NO2-, NH4+, and N3- 
D) N3- only 
E) NO2- and N3-

Question 19

The molecular geometry of the IF5 molecule is ________, and this molecule is ________.

Accepted Answer

A) trigonal bipyramidal, polar 
B) trigonal bipyramidal, nonpolar 
C) trigonal planar, polar 
D) square pyramidal, polar 
E) square pyramidal, nonpolar 
A) trigonal bipyramidal, polar 
B) trigonal bipyramidal, nonpolar 
C) trigonal planar, polar 
D) square pyramidal, polar 
E) square pyramidal, nonpolar

Question 20

In counting the electron domains around the central atom in VSEPR theory, a ________ is not included.

Accepted Answer

A) nonbonding pair of electrons 
B) single covalent bond 
C) core level electron pair 
D) double covalent bond 
E) triple covalent bond 
A) nonbonding pair of electrons 
B) single covalent bond 
C) core level electron pair 
D) double covalent bond 
E) triple covalent bond

Exam 9: Molecular Geometry and Bonding Theories

Using the VSEPR model, the electron-domain geometry of the central atom in ClF3 is ________.

Of the following species, ________ will have bond angles of 120°.

The hybridization of the oxygen atom labeled y in the structure below is ________. The C-O-H bond angle is ________.

The molecular geometry of the left-most carbon atom in the molecule below is ________.

The electron-domain geometry and the molecular geometry of a molecule of the general formula ABn are ________.

The hybrid orbital set used by the central atom in SO3 is ________.

The sensation of vision results from a nerve impulse that is triggered by the separation of retinal from ________.

The Lewis structure of carbon monoxide is given below. The hybridizations of the carbon and oxygen atoms in carbon monoxide are ________ and ________, respectively. : C ≡ O :

Using the VSEPR model, the molecular geometry of the central atom in IF5 is ________.

The hybrid orbital set used by the central atom in ClO2- is ________.

Molecular Orbital theory correctly predicts paramagnetism of oxygen gas, O2. This is because ________.

The more unpaired electrons in a species, the stronger is the force of magnetic attraction. This is called ________.

The highest energy occupied molecular orbital in the F-F bond of the F2 molecule is _____.

The bond order of any molecule containing equal numbers of bonding and antibonding electrons is ________.

Of the following, the central atom is sp3d2 hybridized only in ________.

In the valence shell of an atom there are six electron domains. They will be arranged in a(n)________ geometry.

The central atom in a certain molecule has 1 nonbonded electron pairs and 2 bonded electron pairs in its valence shell. The molecular geometry of this molecule is ________.

Which of the following molecules or ions will exhibit delocalized bonding? NO2- NH4+ N3-

The molecular geometry of the IF5 molecule is ________, and this molecule is ________.

In counting the electron domains around the central atom in VSEPR theory, a ________ is not included.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

Using the VSEPR model, the electron-domain geometry of the central atom in ClF₃ is ________.

The hybridization of the oxygen atom labeled y in the structure below is . The C-O-H bond angle is .

The electron-domain geometry and the molecular geometry of a molecule of the general formula AB_n are ________.

The hybrid orbital set used by the central atom in SO₃ is ________.

The Lewis structure of carbon monoxide is given below. The hybridizations of the carbon and oxygen atoms in carbon monoxide are and , respectively. : C ≡ O :

Using the VSEPR model, the molecular geometry of the central atom in IF₅ is ________.

The hybrid orbital set used by the central atom in ClO₂^- is ________.

Molecular Orbital theory correctly predicts paramagnetism of oxygen gas, O₂. This is because ________.

The highest energy occupied molecular orbital in the F-F bond of the F₂ molecule is _____.

Of the following, the central atom is sp³d² hybridized only in ________.

Which of the following molecules or ions will exhibit delocalized bonding? NO₂^- NH₄⁺ N₃^-

The molecular geometry of the IF₅ molecule is , and this molecule is .