Question 1

What are the products of the reaction of chlorine gas with hot aqueous sodium hydroxide?

Accepted Answer

A) Cl- and H2O 
B) ClO3- and H2O 
C) Cl- and ClO3- 
D) Cl-,ClO3- and H2O 
A) Cl- and H2O 
B) ClO3- and H2O 
C) Cl- and ClO3- 
D) Cl-,ClO3- and H2O

Question 2

The silicate ion shown in the picture below combines with zirconium to form the mineral zircon.What is the formula and charge of the silicate ion?

Accepted Answer

A) SiO32- 
B) SiO44- 
C) Si4O104- 
D) Si4O116- 
A) SiO32- 
B) SiO44- 
C) Si4O104- 
D) Si4O116-

Question 3

Which group 6A element is naturally radioactive?

Accepted Answer

A) S 
B) Se 
C) Te 
D) Po 
A) S 
B) Se 
C) Te 
D) Po

Question 4

The increased viscosity of molten sulfur at 160-195°C is due to the

Accepted Answer

A) melting of S8 to give discrete S8 units. 
B) merging of the S8 rings to give interlocking S8 rings. 
C) opening of the S8 rings to give smaller S units. 
D) opening of the S8 rings which then polymerize into long chains. 
A) melting of S8 to give discrete S8 units. 
B) merging of the S8 rings to give interlocking S8 rings. 
C) opening of the S8 rings to give smaller S units. 
D) opening of the S8 rings which then polymerize into long chains.

Question 5

Which element of group 5A has the highest melting point?

Accepted Answer

A) nitrogen 
B) white phosphorus 
C) antimony 
D) bismuth 
A) nitrogen 
B) white phosphorus 
C) antimony 
D) bismuth

Question 6

What is not a true statement?

Accepted Answer

A) BeO is amphoteric but the oxides of the other group 2A elements are basic. 
B) B differs from other elements of group 3A by forming mainly covalent molecular compounds. 
C) BF3 is a gaseous molecular halide but AlF3 is a high melting ionic solid. 
D) Compounds with C=C double bonds and Si=Si double bonds are quite common. 
A) BeO is amphoteric but the oxides of the other group 2A elements are basic. 
B) B differs from other elements of group 3A by forming mainly covalent molecular compounds. 
C) BF3 is a gaseous molecular halide but AlF3 is a high melting ionic solid. 
D) Compounds with C=C double bonds and Si=Si double bonds are quite common.

Question 7

What are the three most abundant elements in the human body?

Accepted Answer

A) H,C,O 
B) H,O,N 
C) H,C,N 
D) H,C,P 
A) H,C,O 
B) H,O,N 
C) H,C,N 
D) H,C,P

Question 8

Which one of the following carbides is most likely to be nonstoichiometric?

Accepted Answer

A) CaC2 
B) Fe3C 
C) SiC 
D) None of these 
A) CaC2 
B) Fe3C 
C) SiC 
D) None of these

Question 9

-What is the likely formula for the binary compound formed from the elements represented by letters B and C on the periodic table above?

Accepted Answer

A) BC 
B) B3C 
C) BC3 
D) B2C3 
A) BC 
B) B3C 
C) BC3 
D) B2C3

Question 10

What is not a key step in the production of nitric acid by the Ostwald process?

Accepted Answer

A) 4 NH3(g)+ 5 O2(g)→ 4 NO(g)+ 6 H2O(l) 
B) 2 NO(g)+ O2(g)→ 2 NO2(g) 
C) 3 NO2(g)+ H2O(l)→ 2 HNO3(aq)+ NO(g) 
D) N2(g)+ O2(g)→ 2 NO(g) 
A) 4 NH3(g)+ 5 O2(g)→ 4 NO(g)+ 6 H2O(l) 
B) 2 NO(g)+ O2(g)→ 2 NO2(g) 
C) 3 NO2(g)+ H2O(l)→ 2 HNO3(aq)+ NO(g) 
D) N2(g)+ O2(g)→ 2 NO(g)

Question 11

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) nonmetals that are solids. 
A) diatomic molecules. 
B) gases. 
C) liquids. 
D) nonmetals that are solids.

Question 12

Which one of the following is the best electrical conductor?

Accepted Answer

A) C (diamond) 
B) C (graphite) 
C) P4 
D) S8 
A) C (diamond) 
B) C (graphite) 
C) P4 
D) S8

Question 13

Which of the following elements exhibits the most metallic character?

Accepted Answer

A) In 
B) Sn 
C) Sb 
D) Te 
A) In 
B) Sn 
C) Sb 
D) Te

Question 14

What is not a reaction commonly associated with carbon dioxide?

Accepted Answer

A) Oxyhemoglobin + CO2 ⇌ Carboxyhemoglobin + O2 
B) C6H12O6(aq)+ 6 O2(g)⇌ 6 CO2(g)+ 6 H2O(l) 
C) CaCO3(s)+ heat → CaO(s)+ CO2(g) 
D) CO2(g)+ H2O(l)⇌ H+(aq)+ HCO3-(aq) 
A) Oxyhemoglobin + CO2 ⇌ Carboxyhemoglobin + O2 
B) C6H12O6(aq)+ 6 O2(g)⇌ 6 CO2(g)+ 6 H2O(l) 
C) CaCO3(s)+ heat → CaO(s)+ CO2(g) 
D) CO2(g)+ H2O(l)⇌ H+(aq)+ HCO3-(aq)

Question 15

Which group 3A element exhibits the most nonmetallic character?

Accepted Answer

A) B 
B) Ga 
C) In 
D) Tl 
A) B 
B) Ga 
C) In 
D) Tl

Question 16

Which of the following elements forms the most ionic binary hydride?

Accepted Answer

A) Na 
B) Be 
C) O 
D) F 
A) Na 
B) Be 
C) O 
D) F

Question 17

Which of the following chlorides is the most ionic?

Accepted Answer

A) CH2Cl2 
B) CCl4 
C) PbCl2 
D) PbCl4 
A) CH2Cl2 
B) CCl4 
C) PbCl2 
D) PbCl4

Question 18

In the mixed aluminum-boron hydride AlBH6,the number of hydrogen involved in 2c-2e bonds is ________,and the number of hydrogen involved in 3c-2e bonds is ________.

Accepted Answer

Question 19

The silicate ion shown in the picture below combines with beryllium and aluminum to form the mineral beryl.What is the formula and charge of the silicate ion?

Accepted Answer

A) Si6O612+ 
B) Si6O122- 
C) Si6O1812- 
D) Si6O2424- 
A) Si6O612+ 
B) Si6O122- 
C) Si6O1812- 
D) Si6O2424-

Question 20

The strongest reducing agent in the group 3A is

Accepted Answer

A) 
B)  
B) Al. 
C) Ga. 
D) Tl. 
A) 
B)  
B) Al. 
C) Ga. 
D) Tl.

Exam 19: The Main-Group Elements

What are the products of the reaction of chlorine gas with hot aqueous sodium hydroxide?

The silicate ion shown in the picture below combines with zirconium to form the mineral zircon.What is the formula and charge of the silicate ion?

Which group 6A element is naturally radioactive?

The increased viscosity of molten sulfur at 160-195°C is due to the

Which element of group 5A has the highest melting point?

What is not a true statement?

What are the three most abundant elements in the human body?

Which one of the following carbides is most likely to be nonstoichiometric?

-What is the likely formula for the binary compound formed from the elements represented by letters B and C on the periodic table above?

What is not a key step in the production of nitric acid by the Ostwald process?

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

Which one of the following is the best electrical conductor?

Which of the following elements exhibits the most metallic character?

What is not a reaction commonly associated with carbon dioxide?

Which group 3A element exhibits the most nonmetallic character?

Which of the following elements forms the most ionic binary hydride?

Which of the following chlorides is the most ionic?

In the mixed aluminum-boron hydride AlBH6,the number of hydrogen involved in 2c-2e bonds is ________,and the number of hydrogen involved in 3c-2e bonds is ________.

The silicate ion shown in the picture below combines with beryllium and aluminum to form the mineral beryl.What is the formula and charge of the silicate ion?

The strongest reducing agent in the group 3A is

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

In the mixed aluminum-boron hydride AlBH₆,the number of hydrogen involved in 2c-2e bonds is ,and the number of hydrogen involved in 3c-2e bonds is .