Question 1

Using principles discussed in chapters 15 and 19,determine which of the following is the strongest acid.

Accepted Answer

A) HClO 
B) HClO2 
C) HClO3 
D) HClO4 
A) HClO 
B) HClO2 
C) HClO3 
D) HClO4

Question 2

What is the anhydride of sulfuric acid?

Accepted Answer

A) SO2 
B) SO3 
C) S2O3 
D) S2O5 
A) SO2 
B) SO3 
C) S2O3 
D) S2O5

Question 3

The number of nonmetals in group 4A of the periodic table is ________.

Accepted Answer

The answer of The number of nonmetals in group 4A...

Question 4

Electrical conductivity in graphite is maximized ________.

Accepted Answer

A) parallel to the pi framework and parallel to the planar C atom framework. 
B) perpendicular to the pi framework and parallel to the planar C atom framework. 
C) parallel to the pi framework and perpendicular to the planar C atom framework. 
D) perpendicular to the pi framework and perpendicular to the planar C atom framework. 
A) parallel to the pi framework and parallel to the planar C atom framework. 
B) perpendicular to the pi framework and parallel to the planar C atom framework. 
C) parallel to the pi framework and perpendicular to the planar C atom framework. 
D) perpendicular to the pi framework and perpendicular to the planar C atom framework.

Question 5

Which of the group 3A elements is the only one to readily form a +1 ion?

Accepted Answer

A) B 
B) Al 
C) In 
D) Tl 
A) B 
B) Al 
C) In 
D) Tl

Question 6

What are the common oxidation states of the Group 3A elements Al and Tl?

Accepted Answer

A) both are +3 
B) +3 for Al and +1 for Tl 
C) +3 for Al and both +1 and +3 for Tl 
D) +3 for Al and +1,+3,and -5 for Tl 
A) both are +3 
B) +3 for Al and +1 for Tl 
C) +3 for Al and both +1 and +3 for Tl 
D) +3 for Al and +1,+3,and -5 for Tl

Question 7

Which element of group 4A has the greatest electronegativity?

Accepted Answer

A) C 
B) Si 
C) Ge 
D) Sn 
A) C 
B) Si 
C) Ge 
D) Sn

Question 8

The number of metallic elements in period 3 of the periodic table is ________.

Accepted Answer

The answer of The number of metallic elements in period...

Question 9

What is the structure of the "gray" allotropic form of tin that is used as a semiconductor?

Accepted Answer

A) body centered 
B) diamond-like 
C) graphite-like 
D) simple cubic 
A) body centered 
B) diamond-like 
C) graphite-like 
D) simple cubic

Question 10

The B-H-B bond in B2H6 is a three-________,two-________ bond.

Accepted Answer

Question 11

The elements indicated by the shaded area in the following periodic table are all

Accepted Answer

A) metals. 
B) nonmetals. 
C) p-block elements. 
D) s-block elements. 
A) metals. 
B) nonmetals. 
C) p-block elements. 
D) s-block elements.

Question 12

Which one of the following elements forms the strongest π-bonds?

Accepted Answer

A) C 
B) Si 
C) Ge 
D) Sn 
A) C 
B) Si 
C) Ge 
D) Sn

Question 13

In which compound is phosphorus in its lowest oxidation state?

Accepted Answer

A) P4O6 
B) PCl3 
C) PH3 
D) PCl5 
A) P4O6 
B) PCl3 
C) PH3 
D) PCl5

Question 14

Which one of the following compounds exhibits the strongest hydrogen bonding between its molecules?

Accepted Answer

A) CH3OH  
B) CH3F  
C) CH3Cl  
D) CH3Br  
A) CH3OH  
B) CH3F  
C) CH3Cl  
D) CH3Br

Question 15

Which allotrope of carbon has the atoms arranged in a spherical array?

Accepted Answer

A) coke 
B) diamond 
C) fullerene 
D) graphite 
A) coke 
B) diamond 
C) fullerene 
D) graphite

Question 16

-Which of the elements indicated on the above periodic table has a common allotrope stable at 25°C having molecular structure (1)?

Accepted Answer

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

Question 17

What is the geometric structure of P4 molecules?

Accepted Answer

A) linear 
B) rectangular 
C) square planar 
D) tetrahedral 
A) linear 
B) rectangular 
C) square planar 
D) tetrahedral

Question 18

At 25°C the elements indicated by the shaded area in the following periodic table are all

Accepted Answer

A) diatomic molecules. 
B) gases. 
C) liquids. 
D) solids. 
A) diatomic molecules. 
B) gases. 
C) liquids. 
D) solids.

Question 19

-Which of the elements indicated on the above periodic table has the highest ionization energy?

Accepted Answer

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

Question 20

-Which element indicated on the above periodic table forms a binary oxide with molecular structure (2)shown above?

Accepted Answer

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

Exam 19: The Main-Group Elements

Using principles discussed in chapters 15 and 19,determine which of the following is the strongest acid.

What is the anhydride of sulfuric acid?

The number of nonmetals in group 4A of the periodic table is ________.

Electrical conductivity in graphite is maximized ________.

Which of the group 3A elements is the only one to readily form a +1 ion?

What are the common oxidation states of the Group 3A elements Al and Tl?

Which element of group 4A has the greatest electronegativity?

The number of metallic elements in period 3 of the periodic table is ________.

What is the structure of the "gray" allotropic form of tin that is used as a semiconductor?

The B-H-B bond in B2H6 is a three-________,two-________ bond.

The elements indicated by the shaded area in the following periodic table are all

Which one of the following elements forms the strongest π-bonds?

In which compound is phosphorus in its lowest oxidation state?

Which one of the following compounds exhibits the strongest hydrogen bonding between its molecules?

Which allotrope of carbon has the atoms arranged in a spherical array?

-Which of the elements indicated on the above periodic table has a common allotrope stable at 25°C having molecular structure (1)?

What is the geometric structure of P4 molecules?

At 25°C the elements indicated by the shaded area in the following periodic table are all

-Which of the elements indicated on the above periodic table has the highest ionization energy?

-Which element indicated on the above periodic table forms a binary oxide with molecular structure (2)shown above?

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

Covalent Bonds and Molecular Structure

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

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

The B-H-B bond in B₂H₆ is a three-,two- bond.

What is the geometric structure of P₄ molecules?