Question 1

________ hybrid orbitals are used for bonding by Xe in the XeF4 molecule.

Accepted Answer

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

Question 2

Of the following molecules,only ________ is polar.

Accepted Answer

A) BeCl2 
B) BF3 
C) C   
D) SiH2Cl2 
E) Cl2 
A) BeCl2 
B) BF3 
C) C   
D) SiH2Cl2 
E) Cl2

Question 3

The electron-domain geometry of the AsF6- ion is octahedral.The hybrid orbitals used by the As atom for bonding are ________ orbitals.

Accepted Answer

A) sp2d2 
B) sp3 
C) sp3d 
D) sp3d2 
E) sp2 
A) sp2d2 
B) sp3 
C) sp3d 
D) sp3d2 
E) sp2

Question 4

In molecular orbital theory,the bond order of the He-He bond in He2 is ________.

Accepted Answer

A) 0 
B) 2 
C) He-He 
D) 1 
E) 1/2 
A) 0 
B) 2 
C) He-He 
D) 1 
E) 1/2

Question 5

The molecular geometry of the H3O+ ion is ________.

Accepted Answer

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

Question 6

The Cl-Si-Cl bond angle in the SiCl2F2 molecule is approximately ________.

Accepted Answer

A) 90° 
B) 109.5° 
C) 120° 
D) 180° 
E) 60° 
A) 90° 
B) 109.5° 
C) 120° 
D) 180° 
E) 60°

Question 7

There are ________ σ and ________ π bond(s)in the H2C=CH2 molecule.

Accepted Answer

A) 3, 2 
B) 3, 4 
C) 4, 3 
D) 2, 3 
E) 5, 1 
A) 3, 2 
B) 3, 4 
C) 4, 3 
D) 2, 3 
E) 5, 1

Question 8

The hybridizations of bromine in BrF5 and of arsenic in AsF5 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 9

According to MO theory,overlap of two p atomic orbitals produces ________.

Accepted Answer

A) one π MO and one σ* MO 
B) one π MO and one σ MO 
C) one π MO and one π* MO or one σ MO and one σ* MO 
D) one π+ MO and one σ* MO 
E) two π MOs, two π+ MOs, one σ MO, and one σ* MO 
A) one π MO and one σ* MO 
B) one π MO and one σ MO 
C) one π MO and one π* MO or one σ MO and one σ* MO 
D) one π+ MO and one σ* MO 
E) two π MOs, two π+ MOs, one σ MO, and one σ* MO

Question 10

In order to produce sp3 hybrid orbitals,________ s atomic orbital(s)and ________ p atomic orbital(s)must be mixed.

Accepted Answer

A) one, two 
B) one, three 
C) one, one 
D) two, two 
E) two, three 
A) one, two 
B) one, three 
C) one, one 
D) two, two 
E) two, three

Question 11

The molecular geometry of the CHCl3 molecule is ________.

Accepted Answer

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

Question 12

Which of the molecules has a square planar shape?

Accepted Answer

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

Question 13

The hybridization of nitrogen in the H-C   N: molecule is ________.

Accepted Answer

A) sp 
B) s2p 
C) s3p 
D) sp2 
E) sp3 
A) sp 
B) s2p 
C) s3p 
D) sp2 
E) sp3

Question 14

The π bond in ethylene,H2C   CH2,results from the overlap of ________.

Accepted Answer

A) sp3 hybrid orbitals 
B) s atomic orbitals 
C) sp hybrid orbitals 
D) sp2 hybrid orbitals 
E) p atomic orbitals 
A) sp3 hybrid orbitals 
B) s atomic orbitals 
C) sp hybrid orbitals 
D) sp2 hybrid orbitals 
E) p atomic orbitals

Question 15

The hybridization of the oxygen atom labeled x in the structure below is ________.

Accepted Answer

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

Question 16

The electron-domain geometry of ________ is tetrahedral.

Accepted Answer

A) CBr4 
B) PH3 
C) CCl2Br2 
D) XeF4 
E) all of the above except XeF4 
A) CBr4 
B) PH3 
C) CCl2Br2 
D) XeF4 
E) all of the above except XeF4

Question 17

Construct a molecular orbital diagram for a Li2 molecule.According to molecular orbital theory,the σ1s orbital is ________ and the σ1s* orbital is ________.

Accepted Answer

A) filled, filled 
B) half-filled, filled 
C) empty, filled 
D) filled, empty 
E) filled, half-filled 
A) filled, filled 
B) half-filled, filled 
C) empty, filled 
D) filled, empty 
E) filled, half-filled

Question 18

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 19

Of the following molecules,only ________ is polar.

Accepted Answer

A) CCl4 
B) BCl3 
C) NCl3 
D) BeCl2 
E) Cl2 
A) CCl4 
B) BCl3 
C) NCl3 
D) BeCl2 
E) Cl2

Question 20

Mixing one s atomic orbital and one p atomic orbital gives rise to ________.

Accepted Answer

A) three sp2 hybrid orbitals 
B) two sp2 hybrid orbitals 
C) two sp3 hybrid orbitals 
D) three sp hybrid orbitals 
E) two sp hybrid orbitals 
A) three sp2 hybrid orbitals 
B) two sp2 hybrid orbitals 
C) two sp3 hybrid orbitals 
D) three sp hybrid orbitals 
E) two sp hybrid orbitals

Exam 9: Molecular Geometry and Bonding Theories

________ hybrid orbitals are used for bonding by Xe in the XeF4 molecule.

Of the following molecules,only ________ is polar.

The electron-domain geometry of the AsF6- ion is octahedral.The hybrid orbitals used by the As atom for bonding are ________ orbitals.

In molecular orbital theory,the bond order of the He-He bond in He2 is ________.

The molecular geometry of the H3O+ ion is ________.

The Cl-Si-Cl bond angle in the SiCl2F2 molecule is approximately ________.

There are ________ σ and ________ π bond(s)in the H2C=CH2 molecule.

The hybridizations of bromine in BrF5 and of arsenic in AsF5 are ________ and ________,respectively.

According to MO theory,overlap of two p atomic orbitals produces ________.

In order to produce sp3 hybrid orbitals,________ s atomic orbital(s)and ________ p atomic orbital(s)must be mixed.

The molecular geometry of the CHCl3 molecule is ________.

Which of the molecules has a square planar shape?

The hybridization of nitrogen in the H-C N: molecule is ________.

The π bond in ethylene,H2C CH2,results from the overlap of ________.

The hybridization of the oxygen atom labeled x in the structure below is ________.

The electron-domain geometry of ________ is tetrahedral.

Construct a molecular orbital diagram for a Li2 molecule.According to molecular orbital theory,the σ1s orbital is ________ and the σ1s* orbital is ________.

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

Of the following molecules,only ________ is polar.

Mixing one s atomic orbital and one p atomic orbital gives rise to ________.

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

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

________ hybrid orbitals are used for bonding by Xe in the XeF₄ molecule.

The electron-domain geometry of the AsF₆^- ion is octahedral.The hybrid orbitals used by the As atom for bonding are ________ orbitals.

In molecular orbital theory,the bond order of the He-He bond in He₂ is ________.

The molecular geometry of the H₃O⁺ ion is ________.

The Cl-Si-Cl bond angle in the SiCl₂F₂ molecule is approximately ________.

There are σ and π bond(s)in the H₂C=CH₂ molecule.

The hybridizations of bromine in BrF₅ and of arsenic in AsF₅ are and ,respectively.

In order to produce sp³hybrid orbitals, s atomic orbital(s)and p atomic orbital(s)must be mixed.

The molecular geometry of the CHCl₃ molecule is ________.

The π bond in ethylene,H₂C CH₂,results from the overlap of ________.

Construct a molecular orbital diagram for a Li₂ molecule.According to molecular orbital theory,the σ_1s orbital is ________ and the σ_1s^* orbital is ________.