Question 1

Choose the INCORRECT statement.

Accepted Answer

A)  Aqua regia is a combination of HCl and HNO3.
B)  Malleable means that a metal can be beaten into a thin sheet.
C)  One of the most important property of Cu,Ag,and Au is resistance to corrosion.
D)  Because the ions of Cu,Ag,and Au are easy to reduce means that the metals are easy to oxidize.
E)  The coinage metals are Cu,Ag,and Au.F) A) and B)
G) C) and D)

Question 2

Choose the INCORRECT statement.

Accepted Answer

A)  The product of a blast furnace is pig iron.
B)  Cast iron is pig iron poured directly into molds.
C)  Pig iron is converted to steel by reducing the carbon content,removing Si,Mn,P,and other impurities,and adding alloying elements.
D)  The most important method of steel-making today is the basic oxygen process.
E)  In the basic oxygen process,oxygen is bubbled into the blast furnace.F) All of the above
G) A) and D)

Question 3

The lanthanide contraction is due to the poor shielding effect of the f-electrons and the higher nuclear charge.

Accepted Answer

A) True 
 B)False

Question 4

What volume of 18 M sulfuric acid could be prepared from the sulfur dioxide formed by the smelting of 5.00 metric tons of copper(I) sulfide,assuming that only 50% of the sulfur dioxide can actually be converted to the acid?

Accepted Answer

A)  790 L
B)  870 L
C)  940 L
D)  1,200 L
E)  1,600 LF) C) and E)
G) A) and D)

Question 5

Write the electron configuration for Fe2+.

Accepted Answer

A)  [Ar]3d6 
B)  [Ar]4s23d4 
C)  [Ar]4s24p4 
D)  [Ar]4s14p1 
E)  [Ar]5s2 F) D) and E)
G) A) and D)

Question 6

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.F) A) and B)
G) None of the above

Question 7

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 compoundsF) C) and E)
G) All of the above

Question 8

Which element has the lowest first ionization potential?

Accepted Answer

A)  Fe
B)  Ni
C)  Co
D)  Mn
E)  TiF) A) and B)
G) C) and E)

Question 9

Which of the following exhibits ferromagnetism?

Accepted Answer

A)  Ni
B)  Ru
C)  Rh
D)  MnE) A) and D)
F) B) and C)

Question 10

A 25.0 mL aliquot of a solution containing Fe2+(aq) ,prepared during an assay of a pyrite ore,was titrated to a faint purple endpoint by 32.2 mL of 0.020 M KMnO4(aq) .What was the molarity of the Fe2+ solution? [The permanganate was reduced to Mn2+(aq) .]

Accepted Answer

A)  0.13 M
B)  0.19 M
C)  0.26 M
D)  0.31 M
E)  0.47 MF) None of the above
G) A) and C)

Question 11

The atomic radius of Ru is approximately the same as that of Os.

Accepted Answer

A) True 
 B)False

Question 12

The coinage metals are copper,silver,and zinc.

Accepted Answer

A) True 
 B)False

Question 13

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.F) C) and E)
G) A) and C)

Question 14

Choose the INCORRECT statement.

Accepted Answer

A)  Iron is the most widely used metal from the earth's crust.
B)  The simplified equation for the reduction of iron is Fe2O3(s) + 3 CO(g) → 2 Fe(l) + 3 CO2(g) .
C)  One process in the making of steel from pig iron is to reduce the carbon content.
D)  The product of a blast furnace is steel.
E)  The solid reactants in a blast furnace are iron ore,coke,and a slag-forming flux.F) A) and B)
G) A) and E)

Question 15

What is the ground-state electron configuration for Cr3+ (Z = 24) ?

Accepted Answer

A)  [Ar] 4s23d7
B)  [Ar] 4s23d1
C)  [Ar] 3d3
D)  [Ar] 4s13d2E) B) and D)
F) None of the above

Question 16

Which of the following definitions is INCORRECT?

Accepted Answer

A)  amalgam: a solid solution or alloy containing mercury
B)  coinage metals: the transition elements of Group 11 (1
B)  
C)  galvanized iron: iron which has been electroplated with tin
D)  lanthanides: elements of atomic number 58 through 71
E)  pig iron: slightly impure iron as obtained directly from the blast furnaceF) None of the above
G) C) and E)

Question 17

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 kgF) A) and C)
G) None of the above

Question 18

List the following in order of increasing atomic radius: V,Sc,Fe,Ti.

Accepted Answer

A)  Fe 
B)  Sc 
C)  Ti 
D)  V 
E)  Fe < Sc < Ti < VF) B) and D)
G) A) and B)

Question 19

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.F) B) and D)
G) None of the above

Question 20

How much carbon monoxide is required to reduce 2.00 metric tons (2000 kg) of iron ore if the ore is 5.03% iron?
Fe2O3(s) + 3 CO(g) → 2 Fe(l) + 3 CO2(g)

Accepted Answer

A)  151 kg
B)  75.7 kg
C)  25.2 kg
D)  40.7 kg
E)  50.5 kgF) All of the above
G) A) and B)

Exam 23: The Transition Elements

What volume of 18 M sulfuric acid could be prepared from the sulfur dioxide formed by the smelting of 5.00 metric tons of copper(I) sulfide,assuming that only 50% of the sulfur dioxide can actually be converted to the acid?

Correct AnswerverifiedShow Answer

How much carbon monoxide is required to reduce 2.00 metric tons (2000 kg) of iron ore if the ore is 5.03% iron? Fe2O3(s) + 3 CO(g) → 2 Fe(l) + 3 CO2(g)

Correct AnswerverifiedShow Answer

The atomic radius of Ru is approximately the same as that of Os.

Correct AnswerverifiedShow Answer

What is the ground-state electron configuration for Cr3+ (Z = 24) ?

Correct AnswerverifiedShow Answer

Choose the INCORRECT statement.

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

Which element has the lowest first ionization potential?

Correct AnswerverifiedShow Answer

The coinage metals are copper,silver,and zinc.

Correct AnswerverifiedShow Answer

The lanthanide contraction is due to the poor shielding effect of the f-electrons and the higher nuclear charge.

Correct AnswerverifiedShow Answer

Choose the INCORRECT statement.

Correct AnswerverifiedShow Answer

Choose the INCORRECT statement.

Correct AnswerverifiedShow Answer

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

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List the following in order of increasing atomic radius: V,Sc,Fe,Ti.

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Choose the INCORRECT statement.

Correct AnswerverifiedShow Answer

A 25.0 mL aliquot of a solution containing Fe2+(aq) ,prepared during an assay of a pyrite ore,was titrated to a faint purple endpoint by 32.2 mL of 0.020 M KMnO4(aq) .What was the molarity of the Fe2+ solution? [The permanganate was reduced to Mn2+(aq) .]

Correct AnswerverifiedShow Answer

Choose the INCORRECT statement.

Correct AnswerverifiedShow Answer

Choose the INCORRECT statement.

Correct AnswerverifiedShow Answer

Which of the following definitions is INCORRECT?

Correct AnswerverifiedShow Answer

Which of the following exhibits ferromagnetism?

Correct AnswerverifiedShow Answer

Write the electron configuration for Fe2+.

Correct AnswerverifiedShow Answer

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How much carbon monoxide is required to reduce 2.00 metric tons (2000 kg) of iron ore if the ore is 5.03% iron? Fe₂O₃(s) + 3 CO(g) → 2 Fe(l) + 3 CO₂(g)

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What is the ground-state electron configuration for Cr³⁺ (Z = 24) ?

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A 25.0 mL aliquot of a solution containing Fe²⁺(aq) ,prepared during an assay of a pyrite ore,was titrated to a faint purple endpoint by 32.2 mL of 0.020 M KMnO₄(aq) .What was the molarity of the Fe²⁺ solution? [The permanganate was reduced to Mn²⁺(aq) .]

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Write the electron configuration for Fe²⁺.

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