Question 1

What are the bond angles in the following molecular model of TeF5-?

Accepted Answer

A) some less than 90° and some less than 120° but greater than 90° 
B) 90° and 120° 
C) some less than 90° and some less than 180° but greater than 120° 
D) 90° and 180° 
A) some less than 90° and some less than 120° but greater than 90° 
B) 90° and 120° 
C) some less than 90° and some less than 180° but greater than 120° 
D) 90° and 180°

Question 2

What is the geometry around the central atom in the following molecular model of SO32-?

Accepted Answer

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

Question 3

What is the molecular geometry of TeCl4?

Accepted Answer

A) seesaw 
B) square planar 
C) square pyramidal 
D) tetrahedral 
A) seesaw 
B) square planar 
C) square pyramidal 
D) tetrahedral

Question 4

What are the bond angles in the following molecular model of SCl4?

Accepted Answer

A) some less than 90° and one less than 180° 
B) 90° and 180° 
C) some less than 90° one less than 120° but greater than 90°,and one less than 180° but greater than 120° 
D) 90°,120°,and 180° 
A) some less than 90° and one less than 180° 
B) 90° and 180° 
C) some less than 90° one less than 120° but greater than 90°,and one less than 180° but greater than 120° 
D) 90°,120°,and 180°

Question 5

What is the O-B-O bond angle in BO33-?

Accepted Answer

A) less than 109.5° 
B) 109.5° 
C) 120° 
D) greater than 120° 
A) less than 109.5° 
B) 109.5° 
C) 120° 
D) greater than 120°

Question 6

Covalent bonding is a

Accepted Answer

A) gain of electrons. 
B) loss of electrons. 
C) transfer of electrons. 
D) sharing of electrons. 
A) gain of electrons. 
B) loss of electrons. 
C) transfer of electrons. 
D) sharing of electrons.

Question 7

Shown below is a model of CH4 having an orientation in which one or more atoms are hidden from view.What is the indicated bond angle?

Accepted Answer

A) less than 109.5° 
B) 109.5° 
C) less than 120° but greater than 109.5° 
D) 120° 
A) less than 109.5° 
B) 109.5° 
C) less than 120° but greater than 109.5° 
D) 120°

Question 8

A reactive element with a relatively high electronegativity would be expected to have a relatively

Accepted Answer

A) small negative electron affinity and a relatively low ionization energy. 
B) small negative electron affinity and a relatively high ionization energy. 
C) large negative electron affinity and a relatively low ionization energy. 
D) large negative electron affinity and a relatively high ionization energy. 
A) small negative electron affinity and a relatively low ionization energy. 
B) small negative electron affinity and a relatively high ionization energy. 
C) large negative electron affinity and a relatively low ionization energy. 
D) large negative electron affinity and a relatively high ionization energy.

Question 9

What is geometry around the oxygen atom labeled O2?

Accepted Answer

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

Question 10

Identify the set of hybrid orbitals shown below.

Accepted Answer

A) sp 
B) sp2 
C) sp3 
D) None of these 
A) sp 
B) sp2 
C) sp3 
D) None of these

Question 11

The iodine atom in I2 would be expected to have a

Accepted Answer

A) charge of 1-. 
B) partial charge δ-. 
C) partial charge δ+. 
D) charge of 0. 
A) charge of 1-. 
B) partial charge δ-. 
C) partial charge δ+. 
D) charge of 0.

Question 12

What are the bond angles in the following molecular model of SO32-?

Accepted Answer

A) less than 109.5° 
B) 109.5° 
C) less than 120° but greater than 109.5° 
D) 120° 
A) less than 109.5° 
B) 109.5° 
C) less than 120° but greater than 109.5° 
D) 120°

Question 13

What is geometry around the carbon atom labeled C2?

Accepted Answer

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

Question 14

What are the bond angles in the following molecular model of XeF4?

Accepted Answer

A) some less than 90° and some less than 120° but greater than 90° 
B) 90° 
C) some less than 90° and some less than 180° but greater than 90° 
D) 90° and 180° 
A) some less than 90° and some less than 120° but greater than 90° 
B) 90° 
C) some less than 90° and some less than 180° but greater than 90° 
D) 90° and 180°

Question 15

In the best Lewis structure for NO +,what is the formal charge on the N atom?

Accepted Answer

A) -1 
B) 0 
C) +1 
D) +2 
A) -1 
B) 0 
C) +1 
D) +2

Question 16

At the equilibrium bond length

Accepted Answer

A) the attractive forces holding the atoms together are less than the repulsive forces. 
B) the potential energy is a maximum. 
C) the potential energy is a minimum. 
D) the repulsive forces are greater than the attractive forces holding the atoms together. 
A) the attractive forces holding the atoms together are less than the repulsive forces. 
B) the potential energy is a maximum. 
C) the potential energy is a minimum. 
D) the repulsive forces are greater than the attractive forces holding the atoms together.

Question 17

What is the approximate carbon-oxygen bond order in CO32-?

Accepted Answer

A) 1 
B) 4/3 
C) 5/3 
D) 2 
A) 1 
B) 4/3 
C) 5/3 
D) 2

Question 18

The electronegativity is 2.1 for H and 1.9 for Pb.Based on these electronegativities PbH4 would be expected to

Accepted Answer

A) be ionic and contain H- ions. 
B) be ionic and contain H+ ions. 
C) have polar covalent bonds with a partial negative charges on the H atoms. 
D) have polar covalent bonds with a partial positive charges on the H atoms. 
A) be ionic and contain H- ions. 
B) be ionic and contain H+ ions. 
C) have polar covalent bonds with a partial negative charges on the H atoms. 
D) have polar covalent bonds with a partial positive charges on the H atoms.

Question 19

Which molecule has a central atom that uses the set of hybrid orbitals shown below to form bonds with the non-central atoms?

Accepted Answer

A) H2O 
B) CO2 
C) NO2- 
D) ICl2- 
A) H2O 
B) CO2 
C) NO2- 
D) ICl2-

Question 20

Assign formal charges to all atoms in the following resonance form for HNO3.

Accepted Answer

A) 0 for all atoms 
B) +1 for N,-1 for oxygen (c),0 for all other atoms 
C) +1 for N and H,-1 for oxygen (a)and oxygen (c),0 for oxygen (b) 
D) +1 for H,-2 for each oxygen,+5 for N 
A) 0 for all atoms 
B) +1 for N,-1 for oxygen (c),0 for all other atoms 
C) +1 for N and H,-1 for oxygen (a)and oxygen (c),0 for oxygen (b) 
D) +1 for H,-2 for each oxygen,+5 for N

Exam 7: Covalent Bonds and Molecular Structure

What are the bond angles in the following molecular model of TeF5-?

What is the geometry around the central atom in the following molecular model of SO32-?

What is the molecular geometry of TeCl4?

What are the bond angles in the following molecular model of SCl4?

What is the O-B-O bond angle in BO33-?

Covalent bonding is a

Shown below is a model of CH4 having an orientation in which one or more atoms are hidden from view.What is the indicated bond angle?

A reactive element with a relatively high electronegativity would be expected to have a relatively

What is geometry around the oxygen atom labeled O2?

Identify the set of hybrid orbitals shown below.

The iodine atom in I2 would be expected to have a

What are the bond angles in the following molecular model of SO32-?

What is geometry around the carbon atom labeled C2?

What are the bond angles in the following molecular model of XeF4?

In the best Lewis structure for NO +,what is the formal charge on the N atom?

At the equilibrium bond length

What is the approximate carbon-oxygen bond order in CO32-?

The electronegativity is 2.1 for H and 1.9 for Pb.Based on these electronegativities PbH4 would be expected to

Which molecule has a central atom that uses the set of hybrid orbitals shown below to form bonds with the non-central atoms?

Assign formal charges to all atoms in the following resonance form for HNO3.

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

What are the bond angles in the following molecular model of TeF₅^-?

What is the geometry around the central atom in the following molecular model of SO₃^2-?

What is the molecular geometry of TeCl₄?

What are the bond angles in the following molecular model of SCl₄?

What is the O-B-O bond angle in BO₃^3-?

Shown below is a model of CH₄ having an orientation in which one or more atoms are hidden from view.What is the indicated bond angle?

What is geometry around the oxygen atom labeled O₂?

The iodine atom in I₂ would be expected to have a

What are the bond angles in the following molecular model of SO₃^2-?

What is geometry around the carbon atom labeled C₂?

What are the bond angles in the following molecular model of XeF₄?

In the best Lewis structure for NO⁺,what is the formal charge on the N atom?

What is the approximate carbon-oxygen bond order in CO₃^2-?

The electronegativity is 2.1 for H and 1.9 for Pb.Based on these electronegativities PbH₄ would be expected to

Assign formal charges to all atoms in the following resonance form for HNO₃.