Question 1

Which is the most acceptable electron dot structure for N2H2?

Accepted Answer

A)    
B)    
C)  H - N =N - H 
D)    
A)    
B)    
C)  H - N =N - H 
D)

Question 2

Two resonance forms for SOCl2 are given below.  
Which is favored by the octet rule and which by formal charge considerations?

Accepted Answer

A) I is favored by the octet rule and by formal charge considerations. 
B) I is favored by the octet rule and II by formal charge considerations. 
C) II is favored by the octet rule and I by formal charge considerations. 
D) II is favored by the octet rule and by formal charge considerations. 
A) I is favored by the octet rule and by formal charge considerations. 
B) I is favored by the octet rule and II by formal charge considerations. 
C) II is favored by the octet rule and I by formal charge considerations. 
D) II is favored by the octet rule and by formal charge considerations.

Question 3

What is the hybridization of the carbon atom labeled C1?

Accepted Answer

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

Question 4

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 5

How many lone pairs of electrons are on the Xe atom in XeF6?

Accepted Answer

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

Question 6

What is the molecular geometry of SF5-?

Accepted Answer

A) octahedral 
B) seesaw 
C) square pyramidal 
D) trigonal bipyramidal 
A) octahedral 
B) seesaw 
C) square pyramidal 
D) trigonal bipyramidal

Question 7

Which is paramagnetic?

Accepted Answer

A) N22+ 
B) N22- 
C) O22+ 
D) O22- 
A) N22+ 
B) N22- 
C) O22+ 
D) O22-

Question 8

What is the molecular geometry of Te Cl4?

Accepted Answer

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

Question 9

The molecular geometry of COCl2 is ________.

Accepted Answer

Question 10

Use the following MO diagram for Be2,Be2+,and Be2-.Based on this diagram,

Accepted Answer

A) Be2+ is more stable than Be2,and Be2 is more stable than Be2-. 
B) Be2- is more stable than Be2,and Be2 is more stable than Be2+. 
C) Be2+ and Be2- are both more stable than Be2. 
D) Be2 is more stable than either Be2+ or Be2-. 
A) Be2+ is more stable than Be2,and Be2 is more stable than Be2-. 
B) Be2- is more stable than Be2,and Be2 is more stable than Be2+. 
C) Be2+ and Be2- are both more stable than Be2. 
D) Be2 is more stable than either Be2+ or Be2-.

Question 11

Predict whether removing two electrons from F2 will create an ion that is diamagnetic or paramagnetic and have an F-F that is stronger or weaker than the bond in F2.

Accepted Answer

paramagnet

Question 12

Using only the elements Ba,F,and P,give the formula of a compound having largely polar covalent bonds.

Accepted Answer

The answer of Using only the elements Ba,F,and P,give the...

Question 13

What is the hybridization of the carbon atom labeled C2?

Accepted Answer

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

Question 14

A triple bond is generally composed of

Accepted Answer

A) three π bonds. 
B) two π bonds and one σ bond. 
C) one π bond and two σ bonds. 
D) three σ bonds. 
A) three π bonds. 
B) two π bonds and one σ bond. 
C) one π bond and two σ bonds. 
D) three σ bonds.

Question 15

The carbon-carbon bond in C2H2 contains ________ σ and ________ π bonds.

Accepted Answer

Question 16

What is the geometry around the central atom in the following molecular model of H2S?

Accepted Answer

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

Question 17

The number of sp2 hybrid orbitals on the carbon atom in CO32- is

Accepted Answer

A) one. 
B) two. 
C) three. 
D) four. 
A) one. 
B) two. 
C) three. 
D) four.

Question 18

What are the bond angles in the following molecular model of PH3?

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 19

Electrostatic potential maps use color to portray the calculated electron distribution in a molecule.Atoms that are electron poor and carry a δ+ charge are shown in blue.Atoms that are electron rich and carry a δ- charge are shown in red.Atoms with little or no charge are shown in green.The electrostatic potential map of CH3Li below should show

Accepted Answer

A) C blue and Li red. 
B) C blue and Li green. 
C) C green and Li blue. 
D) C red and Li blue. 
A) C blue and Li red. 
B) C blue and Li green. 
C) C green and Li blue. 
D) C red and Li blue.

Question 20

What is the hybridization of the oxygen atom labeled O2?

Accepted Answer

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

Exam 7: Covalent Bonds and Molecular Structure

Which is the most acceptable electron dot structure for N2H2?

Two resonance forms for SOCl2 are given below. Which is favored by the octet rule and which by formal charge considerations?

What is the hybridization of the carbon atom labeled C1?

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

How many lone pairs of electrons are on the Xe atom in XeF6?

What is the molecular geometry of SF5-?

Which is paramagnetic?

What is the molecular geometry of Te Cl4?

The molecular geometry of COCl2 is ________.

Use the following MO diagram for Be2,Be2+,and Be2-.Based on this diagram,

Predict whether removing two electrons from F2 will create an ion that is diamagnetic or paramagnetic and have an F-F that is stronger or weaker than the bond in F2.

Using only the elements Ba,F,and P,give the formula of a compound having largely polar covalent bonds.

What is the hybridization of the carbon atom labeled C2?

A triple bond is generally composed of

The carbon-carbon bond in C2H2 contains ________ σ and ________ π bonds.

What is the geometry around the central atom in the following molecular model of H2S?

The number of sp2 hybrid orbitals on the carbon atom in CO32- is

What are the bond angles in the following molecular model of PH3?

What is the hybridization of the oxygen atom labeled O2?

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

Which is the most acceptable electron dot structure for N₂H₂?

Two resonance forms for SOCl₂ are given below. Which is favored by the octet rule and which by formal charge considerations?

What is the hybridization of the carbon atom labeled C₁?

How many lone pairs of electrons are on the Xe atom in XeF₆?

What is the molecular geometry of SF₅^-?

What is the molecular geometry of Te Cl₄?

The molecular geometry of COCl₂ is ________.

Use the following MO diagram for Be₂,Be₂⁺,and Be₂^-.Based on this diagram,

Predict whether removing two electrons from F₂ will create an ion that is diamagnetic or paramagnetic and have an F-F that is stronger or weaker than the bond in F₂.

What is the hybridization of the carbon atom labeled C₂?

The carbon-carbon bond in C₂H₂ contains σ and π bonds.

What is the geometry around the central atom in the following molecular model of H₂S?

The number of sp² hybrid orbitals on the carbon atom in CO₃^2- is

What are the bond angles in the following molecular model of PH₃?

What is the hybridization of the oxygen atom labeled O₂?