Question 1

What is the name for the group of elements indicated by the shaded portion of the periodic table?

Accepted Answer

A) alkaline earth metals 
B) group 3A elements 
C) halogens 
D) noble gases 
A) alkaline earth metals 
B) group 3A elements 
C) halogens 
D) noble gases

Question 2

The most acidic oxides of the group 5A elements are oxides of the element ________.

Accepted Answer

The answer of The most acidic oxides of the group...

Question 3

Which statement is not consistent with the chemistry of group 4A elements?

Accepted Answer

A) Elements have the outer valence electron configuration of ns2np2. 
B) The most common oxidation state for the elements of the group is +4. 
C) The +4 oxidation state compounds are ionic and the +2 oxidation state compounds are covalent. 
D) The +2 oxidation state for lead is the most stable. 
A) Elements have the outer valence electron configuration of ns2np2. 
B) The most common oxidation state for the elements of the group is +4. 
C) The +4 oxidation state compounds are ionic and the +2 oxidation state compounds are covalent. 
D) The +2 oxidation state for lead is the most stable.

Question 4

Which element of group 4A has the greatest density?

Accepted Answer

A) C 
B) Ge 
C) Sn 
D) Pb 
A) C 
B) Ge 
C) Sn 
D) Pb

Question 5

What is the most metallic element of group 4A?

Accepted Answer

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

Question 6

The highest and lowest oxidation states exhibited by Group 6A elements are ________ and ________.

Accepted Answer

The answer of The highest and lowest oxidation states exhibited...

Question 7

If the anhydride of nitrous acid (HNO2)is N2O3 then what is the anhydride of nitric acid (HNO3)?

Accepted Answer

A) NO2 
B) NO3 
C) N2O3 
D) N2O5 
A) NO2 
B) NO3 
C) N2O3 
D) N2O5

Question 8

Atomic radius of main-group elements generally ________.

Accepted Answer

A) increases from left to right across a period and increases down a group 
B) increases from left to right across a period and decreases down a group 
C) decreases from left to right across a period and increases down a group 
D) decreases from left to right across a period and decreases down a group 
A) increases from left to right across a period and increases down a group 
B) increases from left to right across a period and decreases down a group 
C) decreases from left to right across a period and increases down a group 
D) decreases from left to right across a period and decreases down a group

Question 9

What is the top chemical compound produced in the United States?

Accepted Answer

A) N2 
B) NH3 
C) CaO 
D) H2SO4 
A) N2 
B) NH3 
C) CaO 
D) H2SO4

Question 10

Electronegativity of main-group elements generally ________.

Accepted Answer

A) increases from left to right across a period and increases down a group 
B) increases from left to right across a period and decreases down a group 
C) decreases from left to right across a period and increases down a group 
D) decreases from left to right across a period and decreases down a group 
A) increases from left to right across a period and increases down a group 
B) increases from left to right across a period and decreases down a group 
C) decreases from left to right across a period and increases down a group 
D) decreases from left to right across a period and decreases down a group

Question 11

Which compound has carbon with a negative oxidation number?

Accepted Answer

A) CO2 
B) CaC2 
C) HCN 
D) Na2CO3 
A) CO2 
B) CaC2 
C) HCN 
D) Na2CO3

Question 12

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 13

What is the name of the commercial process for the preparation of sulfuric acid?

Accepted Answer

A) Contact process 
B) Haber process 
C) Mond process 
D) Ostwald process 
A) Contact process 
B) Haber process 
C) Mond process 
D) Ostwald process

Question 14

What is the structure of white phosphorus?

Accepted Answer

A) cage system of Px molecules 
B) discrete P atoms 
C) discrete P4 molecules 
D) polymeric chain-like structure 
A) cage system of Px molecules 
B) discrete P atoms 
C) discrete P4 molecules 
D) polymeric chain-like structure

Question 15

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

Accepted Answer

A) Cs 
B) Sn 
C) Se 
D) Te 
A) Cs 
B) Sn 
C) Se 
D) Te

Question 16

What is the ground state valence shell electron configuration of a group 4A element?

Accepted Answer

A) ns0 np4 
B) ns1 np3 
C) ns2 np2 
D) ns2 np4 
A) ns0 np4 
B) ns1 np3 
C) ns2 np2 
D) ns2 np4

Question 17

When P4O10 is dissolved in water,the water will have a(n)________ (acidic,basic,neutral)pH due to the reaction ________.

Accepted Answer

acidic,P₄O₁₀(

Question 18

Disproportionation is a reaction in which a reactant is both oxidized and reduced in the same reaction.In the disproportionation reaction below,the oxidation number of chlorine in Cl2,ClO-,and Cl- is ________,________,and ________,respectively.
Cl2(g)+ 2 OH-(aq)→ ClO-(aq)+ Cl-(aq)+ H2O(l)

Accepted Answer

Question 19

-Which of these molecules is most likely to contain good π overlap of p orbitals,as shown in figure (a),rather than poor π overlap of p orbitals,as shown in figure (b)?

Accepted Answer

A) Cl2 
B) N2 
C) P4 
D) S8 
A) Cl2 
B) N2 
C) P4 
D) S8

Question 20

A 0.010 M solution of which of the following would have the lowest pH?

Accepted Answer

A) CH3NH2 (Kb = 3.7 × 10-4) 
B) NH2OH (Kb = 9.1 × 10-9) 
C) NH3 (Kb = 1.8 × 10-5) 
D) N2H4 (Kb = 8.0 × 10-7) 
A) CH3NH2 (Kb = 3.7 × 10-4) 
B) NH2OH (Kb = 9.1 × 10-9) 
C) NH3 (Kb = 1.8 × 10-5) 
D) N2H4 (Kb = 8.0 × 10-7)

Exam 19: The Main-Group Elements

What is the name for the group of elements indicated by the shaded portion of the periodic table?

The most acidic oxides of the group 5A elements are oxides of the element ________.

Which statement is not consistent with the chemistry of group 4A elements?

Which element of group 4A has the greatest density?

What is the most metallic element of group 4A?

The highest and lowest oxidation states exhibited by Group 6A elements are ________ and ________.

If the anhydride of nitrous acid (HNO2)is N2O3 then what is the anhydride of nitric acid (HNO3)?

Atomic radius of main-group elements generally ________.

What is the top chemical compound produced in the United States?

Electronegativity of main-group elements generally ________.

Which compound has carbon with a negative oxidation number?

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

What is the name of the commercial process for the preparation of sulfuric acid?

What is the structure of white phosphorus?

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

What is the ground state valence shell electron configuration of a group 4A element?

When P4O10 is dissolved in water,the water will have a(n)________ (acidic,basic,neutral)pH due to the reaction ________.

Disproportionation is a reaction in which a reactant is both oxidized and reduced in the same reaction.In the disproportionation reaction below,the oxidation number of chlorine in Cl2,ClO-,and Cl- is ________,________,and ________,respectively. Cl2(g)+ 2 OH-(aq)→ ClO-(aq)+ Cl-(aq)+ H2O(l)

-Which of these molecules is most likely to contain good π overlap of p orbitals,as shown in figure (a),rather than poor π overlap of p orbitals,as shown in figure (b)?

A 0.010 M solution of which of the following would have the lowest pH?

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 highest and lowest oxidation states exhibited by Group 6A elements are and .

If the anhydride of nitrous acid (HNO₂)is N₂O₃ then what is the anhydride of nitric acid (HNO₃)?

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

When P₄O₁₀ is dissolved in water,the water will have a(n) (acidic,basic,neutral)pH due to the reaction .

Disproportionation is a reaction in which a reactant is both oxidized and reduced in the same reaction.In the disproportionation reaction below,the oxidation number of chlorine in Cl₂,ClO^-,and Cl^- is ,,and ,respectively. Cl₂(g)+ 2 OH^-(aq)→ ClO^-(aq)+ Cl^-(aq)+ H₂O(l)