Question 1

The intermolecular forces formed when KI is dissolved in water are ________ forces.

Accepted Answer

The answer of The intermolecular forces formed when KI is...

Question 2

A molecular model of BeF2 is shown below.Based on the best Lewis electron-dot structure for BeF2 and formal charge considerations,what is the predicted Be-F bond order for each Be-F bond?

Accepted Answer

A) 1 
B) 1.33 
C) 1.5 
D) 2 
A) 1 
B) 1.33 
C) 1.5 
D) 2

Question 3

What is the geometry around the central atom in the following molecular model of XeF2?

Accepted Answer

A) trigonal bipyramidal 
B) seesaw 
C) T-shaped 
D) linear 
A) trigonal bipyramidal 
B) seesaw 
C) T-shaped 
D) linear

Question 4

-In the drawing of acetic acid,CH3CO2H,a partial negative charge (δ-)occurs on

Accepted Answer

A) only atom (a). 
B) only atom (b). 
C) atoms (a)and (c). 
D) atoms (b)and (d). 
A) only atom (a). 
B) only atom (b). 
C) atoms (a)and (c). 
D) atoms (b)and (d).

Question 5

Which drawing represents the molecular orbital containing the highest energy electrons in the O2 molecule in its ground state?

Accepted Answer

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

Question 6

Which drawing best shows the direction of the dipole moment in H2C=CCl2?

Accepted Answer

A) drawing (1) 
B) drawing (2) 
C) drawing (3) 
D) drawing (4) 
A) drawing (1) 
B) drawing (2) 
C) drawing (3) 
D) drawing (4)

Question 7

What is the geometry around the central atom in the following molecular model of NH4+?

Accepted Answer

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

Question 8

What is the molecular geometry of XeF4?

Accepted Answer

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

Question 9

In the molecule BF3 there is a δ+ charge on the ________ atom and a δ- charge on the ________ atom.

Accepted Answer

Question 10

Which is expected to have the largest dispersion forces?

Accepted Answer

A) C2H4 
B) C8H16 
C) Cl2 
D) N2H4 
A) C2H4 
B) C8H16 
C) Cl2 
D) N2H4

Question 11

Which drawing represents a π bonding molecular orbital for a homonuclear diatomic molecule?

Accepted Answer

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

Question 12

Based on VSEPR theory,which should have the smallest XAX bond angle?

Accepted Answer

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

Question 13

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 14

A single sp3 hybrid orbital has

Accepted Answer

A) one lobe. 
B) two lobes of equal size. 
C) two lobes of unequal size. 
D) three lobes of equal size. 
A) one lobe. 
B) two lobes of equal size. 
C) two lobes of unequal size. 
D) three lobes of equal size.

Question 15

The bonds in the polyatomic ion NO3- are classified as ________.

Accepted Answer

Question 16

A molecular model of BBr3 is shown below.Based on the best Lewis electron-dot structure for BBr3 and formal charge considerations,what is the predicted B-Br bond order for each B-Br bond?

Accepted Answer

A) 1 
B) 1.33 
C) 1.5 
D) 2 
A) 1 
B) 1.33 
C) 1.5 
D) 2

Question 17

What is the geometry around the central atom in the following molecular model of BrF5?

Accepted Answer

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

Question 18

What is the hybridization on the N atom in NO2- and in NO3-?

Accepted Answer

A) sp2 for NO2- and sp3 for NO3- 
B) sp3 for NO2- and sp2 for NO3- 
C) sp for NO2- and sp2 for NO3- 
D) sp2 for both 
A) sp2 for NO2- and sp3 for NO3- 
B) sp3 for NO2- and sp2 for NO3- 
C) sp for NO2- and sp2 for NO3- 
D) sp2 for both

Question 19

Which molecular orbital resembles a p-orbital?

Accepted Answer

A) σ 
B) σ* 
C) π 
D) π* 
A) σ 
B) σ* 
C) π 
D) π*

Question 20

What is the molecular geometry of SCl4?

Accepted Answer

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

Exam 8: Covalent Compounds: Bonding Theories and Molecular Structure

The intermolecular forces formed when KI is dissolved in water are ________ forces.

A molecular model of BeF2 is shown below.Based on the best Lewis electron-dot structure for BeF2 and formal charge considerations,what is the predicted Be-F bond order for each Be-F bond?

What is the geometry around the central atom in the following molecular model of XeF2?

-In the drawing of acetic acid,CH3CO2H,a partial negative charge (δ-)occurs on

Which drawing represents the molecular orbital containing the highest energy electrons in the O2 molecule in its ground state?

Which drawing best shows the direction of the dipole moment in H2C=CCl2?

What is the geometry around the central atom in the following molecular model of NH4+?

What is the molecular geometry of XeF4?

In the molecule BF3 there is a δ+ charge on the ________ atom and a δ- charge on the ________ atom.

Which is expected to have the largest dispersion forces?

Which drawing represents a π bonding molecular orbital for a homonuclear diatomic molecule?

Based on VSEPR theory,which should have the smallest XAX bond angle?

A triple bond is generally composed of

A single sp3 hybrid orbital has

The bonds in the polyatomic ion NO3- are classified as ________.

A molecular model of BBr3 is shown below.Based on the best Lewis electron-dot structure for BBr3 and formal charge considerations,what is the predicted B-Br bond order for each B-Br bond?

What is the geometry around the central atom in the following molecular model of BrF5?

What is the hybridization on the N atom in NO2- and in NO3-?

Which molecular orbital resembles a p-orbital?

What is the molecular geometry of SCl4?

Chemical Tools: Experimentation and Measurement

Atoms, molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

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

Nuclear Chemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

A molecular model of BeF₂ is shown below.Based on the best Lewis electron-dot structure for BeF₂ and formal charge considerations,what is the predicted Be-F bond order for each Be-F bond?

What is the geometry around the central atom in the following molecular model of XeF₂?

-In the drawing of acetic acid,CH₃CO₂H,a partial negative charge (δ-)occurs on

Which drawing represents the molecular orbital containing the highest energy electrons in the O₂ molecule in its ground state?

Which drawing best shows the direction of the dipole moment in H₂C=CCl₂?

What is the geometry around the central atom in the following molecular model of NH₄⁺?

What is the molecular geometry of XeF₄?

In the molecule BF₃ there is a δ+ charge on the atom and a δ- charge on the atom.

A single sp³ hybrid orbital has

The bonds in the polyatomic ion NO₃^- are classified as ________.

A molecular model of BBr₃ is shown below.Based on the best Lewis electron-dot structure for BBr₃ and formal charge considerations,what is the predicted B-Br bond order for each B-Br bond?

What is the geometry around the central atom in the following molecular model of BrF₅?

What is the hybridization on the N atom in NO₂^- and in NO₃^-?

What is the molecular geometry of SCl₄?