Question 1

Which figure best illustrates the hybrid orbitals on iodine in ICl2-?

Accepted Answer

A)   
B)    
C)   
D)   
E)     
A)   
B)    
C)   
D)   
E)

Question 2

According to the VSEPR model,a molecule with the general formula AB5 with no lone pairs on the central atom will have a ______ molecular geometry.

Accepted Answer

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

Question 3

The number of lone pairs of electrons on the central atoms is an important factor used to determine the molecular shape or molecular geometry.

Accepted Answer

A) True 
 B)False

Question 4

When PCl5 solidifies it forms PCl4+cations and PCl6- anions.According to valence bond theory,what hybrid orbitals are used by phosphorus in the PCl4+cation?

Accepted Answer

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

Question 5

What is the hybridization of the central atom in ClO3-?

Accepted Answer

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

Question 6

According to molecular orbital theory,what is the bond order of the hypofluorite ion,OF-?

Accepted Answer

A) 0 
B) 0.5 
C) 1 
D) 1.5 
E) 2 
A) 0 
B) 0.5 
C) 1 
D) 1.5 
E) 2

Question 7

According to the VSEPR model,what is the predicted Cl-C-Cl bond angle in CCl4?

Accepted Answer

A) 90° 
B) 109.5° 
C) 120° 
D) 145° 
E) 180° 
A) 90° 
B) 109.5° 
C) 120° 
D) 145° 
E) 180°

Question 8

Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion,CO32-.

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 number of π bonds in phosgene,COCl2,is

Accepted Answer

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

Question 10

According to the VSEPR model,a molecule with the general formula AB3 possessing two lone pairs on the central atom has a trigonal planar molecular geometry.

Accepted Answer

A) True 
 B)False

Question 11

According to the VSEPR model,which one of the following molecules and ions will definitely have at least one 90° bond angle in it? (In each case,except water,the central atom is the first one in the formula.)

Accepted Answer

A) AlCl4- 
B) NH3 
C) PCl5 
D) CO2 
E) H2O 
A) AlCl4- 
B) NH3 
C) PCl5 
D) CO2 
E) H2O

Question 12

The bond angles in the H3O+ ion are

Accepted Answer

A) 120°. 
B) 90°,120°. 
C) 109°. 
D) 90°. 
E) 180°. 
A) 120°. 
B) 90°,120°. 
C) 109°. 
D) 90°. 
E) 180°.

Question 13

Which figure best illustrates the hybrid orbitals on carbon in benzene,C6H6?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 14

What is the total number of electron domains around the central atom for a molecule having a T-shaped molecular geometry,such as BrF3?

Accepted Answer

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

Question 15

What is the number of lone electron pairs on the central atom of a molecule having a linear molecular geometry,such as ClF2-?

Accepted Answer

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

Question 16

Which is the most reasonable prediction for the Cl-N-Cl bond angle in NCl3?

Accepted Answer

A) 120° 
B) 111° 
C) 109.5° 
D) 107° 
E) 90° 
A) 120° 
B) 111° 
C) 109.5° 
D) 107° 
E) 90°

Question 17

The electrons in the delocalized molecular orbitals of benzene (C6H6)

Accepted Answer

A) are confined between two adjacent bonding atoms. 
B) are free to move around the six-membered ring. 
C) form the electron pairs in the C-H bonds of the compound. 
D) are unevenly distributed through the molecule. 
E) give rise to alternating single and double bonds around the ring. 
A) are confined between two adjacent bonding atoms. 
B) are free to move around the six-membered ring. 
C) form the electron pairs in the C-H bonds of the compound. 
D) are unevenly distributed through the molecule. 
E) give rise to alternating single and double bonds around the ring.

Question 18

Indicate the type of hybrid orbitals used by the central atom in CCl4.

Accepted Answer

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

Question 19

Using the VSEPR model,predict the molecular geometry around the central atom in SO32-.

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 20

What is the molecular geometry of BeH2 as predicted by the VSEPR model?

Accepted Answer

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

Exam 9: Chemical Bonding Ii Molecular Geometry and Bonding Theories

Which figure best illustrates the hybrid orbitals on iodine in ICl2-?

According to the VSEPR model,a molecule with the general formula AB5 with no lone pairs on the central atom will have a ______ molecular geometry.

The number of lone pairs of electrons on the central atoms is an important factor used to determine the molecular shape or molecular geometry.

When PCl5 solidifies it forms PCl4+cations and PCl6- anions.According to valence bond theory,what hybrid orbitals are used by phosphorus in the PCl4+cation?

What is the hybridization of the central atom in ClO3-?

According to molecular orbital theory,what is the bond order of the hypofluorite ion,OF-?

According to the VSEPR model,what is the predicted Cl-C-Cl bond angle in CCl4?

Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion,CO32-.

The number of π bonds in phosgene,COCl2,is

According to the VSEPR model,a molecule with the general formula AB3 possessing two lone pairs on the central atom has a trigonal planar molecular geometry.

According to the VSEPR model,which one of the following molecules and ions will definitely have at least one 90° bond angle in it? (In each case,except water,the central atom is the first one in the formula.)

The bond angles in the H3O+ ion are

Which figure best illustrates the hybrid orbitals on carbon in benzene,C6H6?

What is the total number of electron domains around the central atom for a molecule having a T-shaped molecular geometry,such as BrF3?

What is the number of lone electron pairs on the central atom of a molecule having a linear molecular geometry,such as ClF2-?

Which is the most reasonable prediction for the Cl-N-Cl bond angle in NCl3?

The electrons in the delocalized molecular orbitals of benzene (C6H6)

Indicate the type of hybrid orbitals used by the central atom in CCl4.

Using the VSEPR model,predict the molecular geometry around the central atom in SO32-.

What is the molecular geometry of BeH2 as predicted by the VSEPR model?

Chemistry: the Central Science

Atoms Molecules and Ions

Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

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

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

Which figure best illustrates the hybrid orbitals on iodine in ICl₂^-?

According to the VSEPR model,a molecule with the general formula AB₅ with no lone pairs on the central atom will have a ______ molecular geometry.

When PCl₅ solidifies it forms PCl₄⁺cations and PCl₆^- anions.According to valence bond theory,what hybrid orbitals are used by phosphorus in the PCl₄⁺cation?

What is the hybridization of the central atom in ClO₃^-?

According to molecular orbital theory,what is the bond order of the hypofluorite ion,OF^-?

According to the VSEPR model,what is the predicted Cl-C-Cl bond angle in CCl₄?

Valence bond theory predicts that carbon will use _____ hybrid orbitals in the carbonate anion,CO₃^2-.

The number of π bonds in phosgene,COCl₂,is

According to the VSEPR model,a molecule with the general formula AB₃ possessing two lone pairs on the central atom has a trigonal planar molecular geometry.

The bond angles in the H₃O⁺ ion are

Which figure best illustrates the hybrid orbitals on carbon in benzene,C₆H₆?

What is the total number of electron domains around the central atom for a molecule having a T-shaped molecular geometry,such as BrF₃?

What is the number of lone electron pairs on the central atom of a molecule having a linear molecular geometry,such as ClF₂^-?

Which is the most reasonable prediction for the Cl-N-Cl bond angle in NCl₃?

The electrons in the delocalized molecular orbitals of benzene (C₆H₆)

Indicate the type of hybrid orbitals used by the central atom in CCl₄.

Using the VSEPR model,predict the molecular geometry around the central atom in SO₃^2-.

What is the molecular geometry of BeH₂ as predicted by the VSEPR model?