Question 1

Choose the INCORRECT statement about metallurgy.

Accepted Answer

A)  Roasting converts the ore to its oxide. 
B)  Reduction reduces the oxide to metal. 
C)  Carbon is often used as the reducing agent. 
D)  Coke or powdered coal is often used as the reducing agent. 
E)  Refining is the removal of metal from its ore. 
A)  Roasting converts the ore to its oxide. 
B)  Reduction reduces the oxide to metal. 
C)  Carbon is often used as the reducing agent. 
D)  Coke or powdered coal is often used as the reducing agent. 
E)  Refining is the removal of metal from its ore. E

Question 2

The paramagnetism of transition element compounds is caused by:

Accepted Answer

A)  unshared valence electron pairs 
B)  unpaired electrons located in d and f orbitals 
C)  unshared valence electron pairs and optimum packing of the atoms in the crystal lattice 
D)  paired electrons spinning in opposite directions 
E)  shared valence electron pairs 
A)  unshared valence electron pairs 
B)  unpaired electrons located in d and f orbitals 
C)  unshared valence electron pairs and optimum packing of the atoms in the crystal lattice 
D)  paired electrons spinning in opposite directions 
E)  shared valence electron pairs B

Question 3

Choose the INCORRECT statement.

Accepted Answer

A)  The electron configuration of Fe2+ is [Ar]3d6. 
B)  The electron configuration of Co2+ is [Ar]3d7. 
C)  The electron configuration of Fe3+ is [Ar]3d5. 
D)  The electron configuration of Ni2+ is [Ar]3d5. 
E)  A metal carbonyl is a compound formed from a metal and carbon monoxide. 
A)  The electron configuration of Fe2+ is [Ar]3d6. 
B)  The electron configuration of Co2+ is [Ar]3d7. 
C)  The electron configuration of Fe3+ is [Ar]3d5. 
D)  The electron configuration of Ni2+ is [Ar]3d5. 
E)  A metal carbonyl is a compound formed from a metal and carbon monoxide. D

Question 4

Choose the INCORRECT statement about the first row transition elements.

Accepted Answer

A)  Elements on the right side of the transition series usually do not exhibit the wide range of oxidation states. 
B)  Stability of higher oxidation states increases down a group. 
C)  Electrode potentials decrease across to the right. 
D)  All but Cu have negative reduction potentials. 
E)  All but Cu displace H+(aq) as H2(g). 
A)  Elements on the right side of the transition series usually do not exhibit the wide range of oxidation states. 
B)  Stability of higher oxidation states increases down a group. 
C)  Electrode potentials decrease across to the right. 
D)  All but Cu have negative reduction potentials. 
E)  All but Cu displace H+(aq) as H2(g).

Question 5

Choose the INCORRECT statement about the most common oxidation state of transition elements.

Accepted Answer

A)  For Ti, it is +4. 
B)  For Sc, it is +2. 
C)  For V, it is +5. 
D)  For Cr, it is +6. 
E)  For Mn, it is +7. 
A)  For Ti, it is +4. 
B)  For Sc, it is +2. 
C)  For V, it is +5. 
D)  For Cr, it is +6. 
E)  For Mn, it is +7.

Question 6

Use the couples Cr2+ | Cr3+, -0.424 V and Cr3+ | Cr2O72-, -1.33 V to determine E° of Cr2O72- | Cr2+.

Accepted Answer

A)  -0.02 V 
B)  1.75 V 
C)  -1.75 V 
D)  0.81 V 
E)  -1.10 V 
A)  -0.02 V 
B)  1.75 V 
C)  -1.75 V 
D)  0.81 V 
E)  -1.10 V

Question 7

Choose the INCORRECT statement.

Accepted Answer

A)  In steel making, DRI stands for Detection and Recovery of Iron. 
B)  In the basic oxygen process, a lance is a water cooled tube to deliver limestone and oxygen. 
C)  Alloying elements with steel include Cr, Ni, Mn, V, Mo and W. 
D)  The direct reduction of iron depends on the availability of natural gas. 
E)  Steel is an alloy of iron. 
A)  In steel making, DRI stands for Detection and Recovery of Iron. 
B)  In the basic oxygen process, a lance is a water cooled tube to deliver limestone and oxygen. 
C)  Alloying elements with steel include Cr, Ni, Mn, V, Mo and W. 
D)  The direct reduction of iron depends on the availability of natural gas. 
E)  Steel is an alloy of iron.

Question 8

The main source of titanium is:

Accepted Answer

A)  seawater 
B)  rutile ore, TiO2 
C)  oxide ores 
D)  TiS2 
E)  atmospheric gases 
A)  seawater 
B)  rutile ore, TiO2 
C)  oxide ores 
D)  TiS2 
E)  atmospheric gases

Question 9

Choose the INCORRECT statement.

Accepted Answer

A)  The inner transition elements include the lanthanides. 
B)  The lanthanides are sometimes called rare earth elements. 
C)  The lanthanides feature the filling of the 5f orbitals. 
D)  The lanthanides have very similar chemical properties. 
E)  Lanthanides are difficult to separate from each other. 
A)  The inner transition elements include the lanthanides. 
B)  The lanthanides are sometimes called rare earth elements. 
C)  The lanthanides feature the filling of the 5f orbitals. 
D)  The lanthanides have very similar chemical properties. 
E)  Lanthanides are difficult to separate from each other.

Question 10

For the reaction
2Mg(s) + O2(g) → 2MgO(s)
a plot of ΔG° versus temperature has a negative slope.

Accepted Answer

A) True 
 B)False

Question 11

The electronic transitions that take place within d or f subshells of transition metals:

Accepted Answer

A)  are responsible for their metallic character 
B)  cause transition metals to be much better conductors than the very active metals 
C)  occur only in ferromagnetic elements 
D)  are responsible for their high density 
E)  are responsible for their having highly colored compounds 
A)  are responsible for their metallic character 
B)  cause transition metals to be much better conductors than the very active metals 
C)  occur only in ferromagnetic elements 
D)  are responsible for their high density 
E)  are responsible for their having highly colored compounds

Question 12

Which of the following represents a disproportionation reaction?

Accepted Answer

A)  2 Cu+(aq) + H2O(l) → Cu(s) + CuO(s) + 2H+(aq) 
B)  2 CrO42-(aq) + 2 H+(aq) → Cr2O72- 
C)  TiCl4(l) + H2O(l) → TiO2(s) + HCl(g) 
D)  MnO4-(aq) + 5 VO2+(aq) + H2O(l) → Mn2+(aq) + VO2+(aq) + 2 H+(aq) 
E)  3MnO2 + 6 KOH + KClO3   3 K2MnO4 + KCl + 3 H2O 
A)  2 Cu+(aq) + H2O(l) → Cu(s) + CuO(s) + 2H+(aq) 
B)  2 CrO42-(aq) + 2 H+(aq) → Cr2O72- 
C)  TiCl4(l) + H2O(l) → TiO2(s) + HCl(g) 
D)  MnO4-(aq) + 5 VO2+(aq) + H2O(l) → Mn2+(aq) + VO2+(aq) + 2 H+(aq) 
E)  3MnO2 + 6 KOH + KClO3   3 K2MnO4 + KCl + 3 H2O

Question 13

Choose the INCORRECT statement.

Accepted Answer

A)  The extraction of copper is complicated by iron. 
B)  Blister copper has bubbles of air on the surface of the copper. 
C)  Refining to high purity copper is done electrolytically. 
D)  Pyrometallurgy is the roasting of an ore followed by reduction of the ore to metal. 
E)  "Pyro" as a prefix indicates high temperatures. 
A)  The extraction of copper is complicated by iron. 
B)  Blister copper has bubbles of air on the surface of the copper. 
C)  Refining to high purity copper is done electrolytically. 
D)  Pyrometallurgy is the roasting of an ore followed by reduction of the ore to metal. 
E)  "Pyro" as a prefix indicates high temperatures.

Question 14

Write the equation for treatment of Ag with CN-.

Accepted Answer

A)  4 Ag(s) + 2 CN- + O2(g) + 2 H2O(l) → 4 AgO(s) + 4 CO(g) + 4 NH- 
B)  4 Ag(s) + 8 CN- + O2(g) + 2 H2O(l) → 4 [AgCN]- + 4 CO(g) + 4 NH+ 
C)  4 Ag(s) + 8 CN- + O2(g) + 2 H2O(l) → Ag3N(s) + 4 OH- + AgC8(s) 
D)  4 Ag(s) + 8 CN- + O2(g) + 2 H2O(l) → 4 [Ag(CN)2]- + 4 OH- 
E)  4 Ag(s) + 8 CN- + O2(g) + 2 H2O(l) → 4 AgO(s) + 2 H2(g) + 2 CO + 6 CN- 
A)  4 Ag(s) + 2 CN- + O2(g) + 2 H2O(l) → 4 AgO(s) + 4 CO(g) + 4 NH- 
B)  4 Ag(s) + 8 CN- + O2(g) + 2 H2O(l) → 4 [AgCN]- + 4 CO(g) + 4 NH+ 
C)  4 Ag(s) + 8 CN- + O2(g) + 2 H2O(l) → Ag3N(s) + 4 OH- + AgC8(s) 
D)  4 Ag(s) + 8 CN- + O2(g) + 2 H2O(l) → 4 [Ag(CN)2]- + 4 OH- 
E)  4 Ag(s) + 8 CN- + O2(g) + 2 H2O(l) → 4 AgO(s) + 2 H2(g) + 2 CO + 6 CN-

Question 15

What mass of manganese dioxide, from pyrolusite ore, is required for production of 25 kg of potassium permanganate by a process which is 78% efficient?

Accepted Answer

A)  18 kg 
B)  14 kg 
C)  25 kg 
D)  29 kg 
E)  32 kg 
A)  18 kg 
B)  14 kg 
C)  25 kg 
D)  29 kg 
E)  32 kg

Question 16

Lanthanides are also called rare earth elements.

Accepted Answer

A) True 
 B)False

Question 17

Choose the INCORRECT statement.

Accepted Answer

A)  The lanthanides often occur naturally as oxides. 
B)  The most common oxidation state of lanthanides is +4. 
C)  Most of the lanthanides are paramagnetic. 
D)  Like the transition elements, aqueous solutions of the lanthanides are colored. 
E)  Fractionated means to alter slightly the ratio of the concentration of one element to another. 
A)  The lanthanides often occur naturally as oxides. 
B)  The most common oxidation state of lanthanides is +4. 
C)  Most of the lanthanides are paramagnetic. 
D)  Like the transition elements, aqueous solutions of the lanthanides are colored. 
E)  Fractionated means to alter slightly the ratio of the concentration of one element to another.

Question 18

A property that is common to both main group and transition metals is that both types:

Accepted Answer

A)  have high electronegativities 
B)  include a very active metal 
C)  are found in many oxidation states 
D)  exhibit color in compounds 
E)  exhibit at least one oxidation state equal to their periodic group number 
A)  have high electronegativities 
B)  include a very active metal 
C)  are found in many oxidation states 
D)  exhibit color in compounds 
E)  exhibit at least one oxidation state equal to their periodic group number

Question 19

Which element has the largest number of unpaired electrons?

Accepted Answer

A)  Cu2+ 
B)  Fe3+ 
C)  V3+ 
D)  Ni2+ 
E)  Zn2+ 
A)  Cu2+ 
B)  Fe3+ 
C)  V3+ 
D)  Ni2+ 
E)  Zn2+

Question 20

Choose the INCORRECT statement.

Accepted Answer

A)  Most representative element bonding involves s and p orbitals. 
B)  Most transition element bonding involves p orbitals. 
C)  Most representative elements are single oxidation states. 
D)  Most transition elements are multiple oxidation states. 
E)  Metallurgy is the study of metals. 
A)  Most representative element bonding involves s and p orbitals. 
B)  Most transition element bonding involves p orbitals. 
C)  Most representative elements are single oxidation states. 
D)  Most transition elements are multiple oxidation states. 
E)  Metallurgy is the study of metals.

Exam 23: The Transition Elements

Choose the INCORRECT statement about metallurgy.

The paramagnetism of transition element compounds is caused by:

Choose the INCORRECT statement.

Choose the INCORRECT statement about the first row transition elements.

Choose the INCORRECT statement about the most common oxidation state of transition elements.

Use the couples Cr2+ | Cr3+, -0.424 V and Cr3+ | Cr2O72-, -1.33 V to determine E° of Cr2O72- | Cr2+.

Choose the INCORRECT statement.

The main source of titanium is:

Choose the INCORRECT statement.

For the reaction 2Mg(s) + O2(g) → 2MgO(s) a plot of ΔG° versus temperature has a negative slope.

The electronic transitions that take place within d or f subshells of transition metals:

Which of the following represents a disproportionation reaction?

Choose the INCORRECT statement.

Write the equation for treatment of Ag with CN-.

What mass of manganese dioxide, from pyrolusite ore, is required for production of 25 kg of potassium permanganate by a process which is 78% efficient?

Lanthanides are also called rare earth elements.

Choose the INCORRECT statement.

A property that is common to both main group and transition metals is that both types:

Which element has the largest number of unpaired electrons?

Choose the INCORRECT statement.

Matter - Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Additional Aspects

Intermolecular Forces: Liquids and Solids

Solutions and Their Physical Properties

Chemical Kinetics

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Spontaneous Change: Entropy and Free Energy

Electrochemistry

Main Group Elements I: Groups 1, 2, 13, and 14

Main Group Elements II: Groups 18, 17, 16, 15, and Hydrogen

Complex Ions and Coordination Compounds

Nuclear Chemistry 1-41

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

For the reaction 2Mg(s) + O₂(g) → 2MgO(s) a plot of ΔG° versus temperature has a negative slope.

Write the equation for treatment of Ag with CN^-.