Question 1

For molecules with only one central atom, how many lone pairs on the central atom guarantees molecular polarity?

Accepted Answer

A) 1 
B) 2 
C) 1 or 2 
D) 3 
E) 1 or 3 
A) 1 
B) 2 
C) 1 or 2 
D) 3 
E) 1 or 3 A

Question 2

A typical triple bond consists of __________.

Accepted Answer

A) three sigma bonds 
B) three pi bonds 
C) one sigma and two pi bonds 
D) two sigma and one pi bond 
E) three ionic bonds 
A) three sigma bonds 
B) three pi bonds 
C) one sigma and two pi bonds 
D) two sigma and one pi bond 
E) three ionic bonds C

Question 3

The sp3d2 atomic hybrid orbital set accommodates __________ electron domains.

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
E) 6 
A) 2 
B) 3 
C) 4 
D) 5 
E) 6 E

Question 4

Using the VSEPR model, the molecular geometry of the central atom in XeF4 is __________.

Accepted Answer

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

Question 5

What is the molecular geometry of a molecule that has three bonding and two non-bonding domains?

Accepted Answer

The answer of What is the molecular geometry of a...

Question 6

The molecular geometry of the PF3 molecule is __________, and this molecule is __________.

Accepted Answer

A) trigonal planar, polar 
B) trigonal planar, nonpolar 
C) trigonal pyramidal, polar 
D) trigonal pyramidal, nonpolar 
E) tetrahedral, unipolar 
A) trigonal planar, polar 
B) trigonal planar, nonpolar 
C) trigonal pyramidal, polar 
D) trigonal pyramidal, nonpolar 
E) tetrahedral, unipolar

Question 7

Electrons in core orbitals contribute to atom bonding.

Accepted Answer

A) True 
 B)False

Question 8

The electron-domain geometry of a sulfur-centered compound is trigonal bipyramidal. The hybridization of the central sulfur atom is __________.

Accepted Answer

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

Question 9

The hybridization of orbitals on the central atom in a molecule is sp. The electron-domain geometry around this central atom is __________.

Accepted Answer

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

Question 10

Electrons in __________ bonds remain localized between two atoms. Electrons in __________ bonds can become delocalized between more than two atoms.

Accepted Answer

A) pi, sigma 
B) sigma, pi 
C) pi, pi 
D) sigma, sigma 
E) ionic, sigma 
A) pi, sigma 
B) sigma, pi 
C) pi, pi 
D) sigma, sigma 
E) ionic, sigma

Question 11

There is/are __________ σ bond(s)in the molecule below.

Accepted Answer

A) 1 
B) 2 
C) 12 
D) 13 
E) 18 
A) 1 
B) 2 
C) 12 
D) 13 
E) 18

Question 12

Based on molecular orbital theory, the bond order of the N-N bond in the N22+ ion is __________.

Accepted Answer

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

Question 13

The molecular geometry of the BrO3- ion is __________.

Accepted Answer

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

Question 14

The electron-domain geometry and the molecular geometry of a molecule of the general formula ABn will always be the same if __________.

Accepted Answer

A) there are no lone pairs on the central atom 
B) there is more than one central atom 
C) n is greater than four 
D) n is less than four 
E) the octet rule is obeyed 
A) there are no lone pairs on the central atom 
B) there is more than one central atom 
C) n is greater than four 
D) n is less than four 
E) the octet rule is obeyed

Question 15

When four atomic orbitals are mixed to form hybrid orbitals, how many hybrid orbitals are formed?

Accepted Answer

A) one 
B) six 
C) three 
D) four 
E) five 
A) one 
B) six 
C) three 
D) four 
E) five

Question 16

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 17

The hybridizations of iodine in IF3 and IF5 are __________ and __________, respectively.

Accepted Answer

A) sp3, sp3d 
B) sp3d, sp3d2 
C) sp3d, sp3 
D) sp3d2, sp3d 
E) sp3d2, sp3d2 
A) sp3, sp3d 
B) sp3d, sp3d2 
C) sp3d, sp3 
D) sp3d2, sp3d 
E) sp3d2, sp3d2

Question 18

The molecular geometry of __________ is square planar.

Accepted Answer

A) CCl4 
B) XeF4 
C) PH3 
D) XeF2 
E) ICl3 
A) CCl4 
B) XeF4 
C) PH3 
D) XeF2 
E) ICl3

Question 19

Based on molecular orbital theory, the bond orders of the H-H bonds in H2, H2+ and H2- are __________, respectively

Accepted Answer

A) 1, 0, and 0 
B) 1, 1/2, and 0 
C) 1, 0, and 1/2 
D) 1, 1/2, and 1/2 
E) 1, 2, and 0 
A) 1, 0, and 0 
B) 1, 1/2, and 0 
C) 1, 0, and 1/2 
D) 1, 1/2, and 1/2 
E) 1, 2, and 0

Question 20

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

Exam 9: Molecular Geometry and Bonding Theories

For molecules with only one central atom, how many lone pairs on the central atom guarantees molecular polarity?

A typical triple bond consists of __________.

The sp3d2 atomic hybrid orbital set accommodates __________ electron domains.

Using the VSEPR model, the molecular geometry of the central atom in XeF4 is __________.

What is the molecular geometry of a molecule that has three bonding and two non-bonding domains?

The molecular geometry of the PF3 molecule is __________, and this molecule is __________.

Electrons in core orbitals contribute to atom bonding.

The electron-domain geometry of a sulfur-centered compound is trigonal bipyramidal. The hybridization of the central sulfur atom is __________.

The hybridization of orbitals on the central atom in a molecule is sp. The electron-domain geometry around this central atom is __________.

Electrons in __________ bonds remain localized between two atoms. Electrons in __________ bonds can become delocalized between more than two atoms.

There is/are __________ σ bond(s)in the molecule below.

Based on molecular orbital theory, the bond order of the N-N bond in the N22+ ion is __________.

The molecular geometry of the BrO3- ion is __________.

The electron-domain geometry and the molecular geometry of a molecule of the general formula ABn will always be the same if __________.

When four atomic orbitals are mixed to form hybrid orbitals, how many hybrid orbitals are formed?

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 :

The hybridizations of iodine in IF3 and IF5 are __________ and __________, respectively.

The molecular geometry of __________ is square planar.

Based on molecular orbital theory, the bond orders of the H-H bonds in H2, H2+ and H2- are __________, respectively

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

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

The sp³d² atomic hybrid orbital set accommodates __________ electron domains.

Using the VSEPR model, the molecular geometry of the central atom in XeF₄ is __________.

The molecular geometry of the PF₃ molecule is , and this molecule is .

Electrons in bonds remain localized between two atoms. Electrons in bonds can become delocalized between more than two atoms.

Based on molecular orbital theory, the bond order of the N-N bond in the N₂²⁺ ion is __________.

The molecular geometry of the BrO₃^- ion is __________.

The electron-domain geometry and the molecular geometry of a molecule of the general formula AB_n will always be the same if __________.

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 :

The hybridizations of iodine in IF₃ and IF₅ are and , respectively.

Based on molecular orbital theory, the bond orders of the H-H bonds in H₂, H₂⁺and H₂^- are __________, respectively

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