Question 1

A 0.01 M aqueous solution of which of the following is the most basic?

Accepted Answer

A) NaClO 
B) NaClO2 
C) NaClO3 
D) NaClO4 
A) NaClO 
B) NaClO2 
C) NaClO3 
D) NaClO4

Question 2

-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 3

Using the three different isotopes of oxygen 16O,17O,18O and the major isotope of hydrogen,1H.Determine the number of different types of isotopically substituted hydrogen peroxide,H2O2,that could be formed.

Accepted Answer

A) 3 
B) 5 
C) 6 
D) 9 
A) 3 
B) 5 
C) 6 
D) 9

Question 4

What is the charge,n,in the ion Si4O10n that is found in talc?

Accepted Answer

A) 2 - 
B) 4 - 
C) 8 - 
D) 10 - 
A) 2 - 
B) 4 - 
C) 8 - 
D) 10 -

Question 5

-Which of the elements indicated on the above periodic table forms a common allotrope having molecular structure (2)?

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 6

Which compound contains hydrogen atoms that form two types of bonds?

Accepted Answer

A) B2H6 
B) C2H2 
C) C6H6 
D) N2H4 
A) B2H6 
B) C2H2 
C) C6H6 
D) N2H4

Question 7

Which group 3A element exhibits the most nonmetallic character?

Accepted Answer

A) B 
B) Tl 
C) Pb 
D) Sb 
A) B 
B) Tl 
C) Pb 
D) Sb

Question 8

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

Accepted Answer

A) Fr 
B) Ba 
C) Po 
D) At 
A) Fr 
B) Ba 
C) Po 
D) At

Question 9

Which element of group 4A is the most abundant in the earth's crust?

Accepted Answer

A) C 
B) Si 
C) Sn 
D) N 
A) C 
B) Si 
C) Sn 
D) N

Question 10

The percentage of carbon in the endohedral fullerene complexes KrC60 and XeC60 is ________%C and ________%C,respectively.

Accepted Answer

Question 11

There are three different isotopes of hydrogen 1H,2H,3H and three different isotopes of oxygen 16O,17O,18O.Indicate the number of different types of isotopically substituted water,H2O,that could be formed.

Accepted Answer

A) 9 
B) 12 
C) 15 
D) 18 
A) 9 
B) 12 
C) 15 
D) 18

Question 12

What is the Haber process?

Accepted Answer

A) the isolation of N2 from the atmosphere 
B) the synthesis of ammonia,NH3 
C) the synthesis of nitric acid,HNO3 
D) the synthesis of hydrazine,N2H4 
A) the isolation of N2 from the atmosphere 
B) the synthesis of ammonia,NH3 
C) the synthesis of nitric acid,HNO3 
D) the synthesis of hydrazine,N2H4

Question 13

What is a convenient synthetic method for the preparation of SO2?

Accepted Answer

A) 2 SO3(g)+ heat → 2 SO2(g)+ O2(g) 
B) S8(s)+ 8 O2(g)+ heat → 8 SO2(g) 
C) H2SO3(aq)⇌ H2O(l)+ SO2(aq) 
D) FeSO3(s)+ heat → FeO(s)+ SO2(g) 
A) 2 SO3(g)+ heat → 2 SO2(g)+ O2(g) 
B) S8(s)+ 8 O2(g)+ heat → 8 SO2(g) 
C) H2SO3(aq)⇌ H2O(l)+ SO2(aq) 
D) FeSO3(s)+ heat → FeO(s)+ SO2(g)

Question 14

Given that hypohalous acids form by the following reaction,   which of the following changes will increase the yield of HOX?

Accepted Answer

A) add water 
B) add X- 
C) decrease the pH 
D) increase the pH 
A) add water 
B) add X- 
C) decrease the pH 
D) increase the pH

Question 15

Which is not generally considered to be a chemical reaction of the alkaline earth metal magnesium?

Accepted Answer

A) 2 Mg(g)+ O2(g)→ 2 MgO(s)at room temperature 
B) 3 Mg(s)+ N2(g)→ Mg3N2(s)at elevated temperatures 
C) Mg(s)+ 2 H2O(l)→ Mg(OH)2(s)+ H2(g)at room temperature 
D) Mg(s)+ F2(g)→ MgF2(s)at room temperature 
A) 2 Mg(g)+ O2(g)→ 2 MgO(s)at room temperature 
B) 3 Mg(s)+ N2(g)→ Mg3N2(s)at elevated temperatures 
C) Mg(s)+ 2 H2O(l)→ Mg(OH)2(s)+ H2(g)at room temperature 
D) Mg(s)+ F2(g)→ MgF2(s)at room temperature

Question 16

What statement about nitrogen is not consistent with its chemistry?

Accepted Answer

A) It is a colorless,odorless,tasteless gas. 
B) It makes up 78% of the earth's atmosphere by volume. 
C) It is the most volatile component of liquid air with a boiling point of -196°C. 
D) It readily reacts with hydrogen to form NH3 that is used in fertilizers. 
A) It is a colorless,odorless,tasteless gas. 
B) It makes up 78% of the earth's atmosphere by volume. 
C) It is the most volatile component of liquid air with a boiling point of -196°C. 
D) It readily reacts with hydrogen to form NH3 that is used in fertilizers.

Question 17

In general,metallic character

Accepted Answer

A) increases down a column because the orbitals become more compact. 
B) decreases down a column because the orbitals become more compact. 
C) increases across a row because the effective nuclear charge increases. 
D) increases down a column because the orbitals become more diffuse. 
A) increases down a column because the orbitals become more compact. 
B) decreases down a column because the orbitals become more compact. 
C) increases across a row because the effective nuclear charge increases. 
D) increases down a column because the orbitals become more diffuse.

Question 18

Which is an ionic binary hydride?

Accepted Answer

A) HF 
B) NaH 
C) both HF and NaH 
D) neither HF nor NaH 
A) HF 
B) NaH 
C) both HF and NaH 
D) neither HF nor NaH

Question 19

Which one of the following elements forms the most acidic binary oxide?

Accepted Answer

A) K 
B) Si 
C) P 
D) As 
A) K 
B) Si 
C) P 
D) As

Question 20

What is the chemical formula for the superoxide ion?

Accepted Answer

A) O- 
B) O2-  
C) O2- 
D) O22- 
A) O- 
B) O2-  
C) O2- 
D) O22-

Exam 22: The Main-Group Elements

A 0.01 M aqueous solution of which of the following is the most basic?

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

Using the three different isotopes of oxygen 16O,17O,18O and the major isotope of hydrogen,1H.Determine the number of different types of isotopically substituted hydrogen peroxide,H2O2,that could be formed.

What is the charge,n,in the ion Si4O10n that is found in talc?

-Which of the elements indicated on the above periodic table forms a common allotrope having molecular structure (2)?

Which compound contains hydrogen atoms that form two types of bonds?

Which group 3A element exhibits the most nonmetallic character?

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

Which element of group 4A is the most abundant in the earth's crust?

The percentage of carbon in the endohedral fullerene complexes KrC60 and XeC60 is ________%C and ________%C,respectively.

There are three different isotopes of hydrogen 1H,2H,3H and three different isotopes of oxygen 16O,17O,18O.Indicate the number of different types of isotopically substituted water,H2O,that could be formed.

What is the Haber process?

What is a convenient synthetic method for the preparation of SO2?

Given that hypohalous acids form by the following reaction, which of the following changes will increase the yield of HOX?

Which is not generally considered to be a chemical reaction of the alkaline earth metal magnesium?

What statement about nitrogen is not consistent with its chemistry?

In general,metallic character

Which is an ionic binary hydride?

Which one of the following elements forms the most acidic binary oxide?

What is the chemical formula for the superoxide ion?

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

Covalent Compounds: Bonding Theories 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

Nuclear Chemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Connections to Organic and Biological Chemistry

Filters

Using the three different isotopes of oxygen ¹⁶O,¹⁷O,¹⁸O and the major isotope of hydrogen,¹H.Determine the number of different types of isotopically substituted hydrogen peroxide,H₂O₂,that could be formed.

What is the charge,n,in the ion Si₄O₁₀ⁿ that is found in talc?

The percentage of carbon in the endohedral fullerene complexes KrC₆₀ and XeC₆₀ is %C and %C,respectively.

There are three different isotopes of hydrogen ¹H,²H,³H and three different isotopes of oxygen ¹⁶O,¹⁷O,¹⁸O.Indicate the number of different types of isotopically substituted water,H₂O,that could be formed.

What is a convenient synthetic method for the preparation of SO₂?