Question 1

Consider two metals, metal M and metal N. The reaction M + N2+ → M2+ + N will proceed if:

Accepted Answer

A)  M is Zn and N2+ is Pb2+ 
B)  M is Cu and N2+ is Fe2+ 
C)  M is Sn and N2+ is Ca2+ 
D)  M is Ni and N2+ is Mg2+ 
E)  M is Fe and N2+ is Ca2+

Question 2

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

Accepted Answer

A)  Fe < V < Ti < Sc 
B)  Sc < Ti < V < Fe 
C)  Ti < V < Fe < Sc 
D)  V < Fe < Sc < Ti 
E)  Fe < Sc < Ti < V

Question 3

When permanganate ion serves as an oxidizing agent in acidic aqueous solution the manganese-containing product most likely to be formed is ________.

Accepted Answer

A)  Mn2+ 
B)  MnO2 
C)  MnO4- 
D)  MnO 
E)  Mn

Question 4

Choose the INCORRECT statement.

Accepted Answer

A)  Zinc is poisonous in trace amounts. 
B)  ZnO, CdS and HgS are used as artist's pigments. 
C)  The band gap is the energy difference between the conduction band and the valence band. 
D)  The color of Zn, Cd, and Hg compounds depends on the width of the band gap. 
E)  One proposed mechanism of mercury poisoning is that mercury compounds react with sulfur in enzymes.

Question 5

Which element has the lowest first ionization potential?

Accepted Answer

A)  Fe 
B)  Ni 
C)  Co 
D)  Mn 
E)  Ti

Question 6

Galvanized steel is iron coated with cadmium to prevent rust.

Accepted Answer

A) True 
 B)False

Question 7

Write the electron configuration for Fe2+.

Accepted Answer

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

Question 8

In the group of elements Cr, Ni, Sn, Pt, Ti, the one which is a main group element is ________.

Accepted Answer

A)  Ni 
B)  Sn 
C)  Ti 
D)  Pt 
E)  Cr

Question 9

Choose the INCORRECT statement about the transition elements.

Accepted Answer

A)  They have high melting points. 
B)  They are good electrical conductors. 
C)  They have moderate to extreme hardness. 
D)  They are d-block and f-block elements. 
E)  They generally have positive reduction potentials.

Question 10

Order the following compounds from acidic to basic, with the most acidic on the left. CrO, Cr2 O3 , CrO3

Accepted Answer

A)  CrO3  > Cr2 O3  > CrO 
B)  CrO3  > CrO > Cr2 O3 
C)  Cr2 O3  > CrO3  > CrO 
D)  CrO > Cr2 O3  > CrO3

Question 11

Choose the INCORRECT statement.

Accepted Answer

A)  Among the methods to separate the lanthanides are fractional precipitation and solvent extraction. 
B)  Because the properties of the lanthanides are so similar, separation must be done in a series of repetitive steps. 
C)  Lanthanides are reactive metals, that is they liberate H2 from acids. 
D)  The 4f electrons play a major role in chemical bonding. 
E)  The pure lanthanide metals can be produced by electrolytic reduction from the +3 oxidation state.

Question 12

Zinc oxide, a useful fungicide, can be prepared from zinc blende ore by roasting the ore in air and then purifying the resulting oxide. What mass of zinc oxide could be obtained from 5.00 kg of a zinc blende ore that analyzed at 48.6% zinc sulfide, if the net conversion is 66.7% efficient?

Accepted Answer

A)  0.98 kg 
B)  1.35 kg 
C)  1.51 kg 
D)  1.89 kg 
E)  2.07 kg

Question 13

Which of the following is uncharacteristic for the elements of the first transition series?

Accepted Answer

A)  an inner core of electrons in the argon configuration 
B)  two 4s electrons for eight elements, and one 4s electron for Cr and Cu 
C)  a number of 3d electrons ranging from one for Sc to ten for Cu and Zn 
D)  except for Sc and Ti, only minor variation in atomic radii 
E)  only one possible oxidation state per element, different for each

Question 14

Choose the INCORRECT statement.

Accepted Answer

A)  The coinage metals are used for coins because of durability and resistance to corrosion. 
B)  Bronze is an alloy of copper and tin. 
C)  Coinage metals are excellent electrical conductors. 
D)  Coinage metals have poor malleability and ductility. 
E)  Gold does not react with any acid but aqua regia.

Question 15

Find the FALSE combination of a metallurgical process and its example:

Accepted Answer

A)  leaching: 4 Au(s) + 8 CN-(aq) + O2(g) + 2 H2O(l) → 4 [Au(CN)2]-(aq) + 4 OH-(aq) 
B)  reduction: ZnCO3(s) → ZnO(s) + CO2(g) 
C)  roasting: 2 Cu2S(s) + 3 O2(g) → 2 Cu2O(s) + 2 SO2(g) 
D)  precipitation: Zn2+(aq) + S2-(aq) → ZnS(s) 
E)  conversion: 2 Co(OH)3(s)  Co2O3(s) + 3 H2O(g)

Question 16

Metallurgy is the general study of metals.

Accepted Answer

A) True 
 B)False

Question 17

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 L

Question 18

What average current must be maintained to electroplate 6.5 g of chromium per hour from a solution of chromium(III) complex?

Accepted Answer

A)  3.4 A 
B)  6.9 A 
C)  10 A 
D)  12 A 
E)  15 A

Question 19

Which of the following statements is true regarding the oxidation states of the transition elements?

Accepted Answer

A)  For group 8, only Os forms compounds with an oxidation state of +8. 
B)  For group 6, Cr forms many compounds with an oxidation state of +6. 
C)  The late transition metal elements form many compounds with oxidation states of 0 and -1. 
D)  The most common oxidation state of Co is +7.

Question 20

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.

Exam 23: The Transition Elements

Consider two metals, metal M and metal N. The reaction M + N²⁺ → M²⁺ + N will proceed if:

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

When permanganate ion serves as an oxidizing agent in acidic aqueous solution the manganese-containing product most likely to be formed is ________.

Choose the INCORRECT statement.

Which element has the lowest first ionization potential?

Galvanized steel is iron coated with cadmium to prevent rust.

Write the electron configuration for Fe²⁺.

In the group of elements Cr, Ni, Sn, Pt, Ti, the one which is a main group element is ________.

Choose the INCORRECT statement about the transition elements.

Order the following compounds from acidic to basic, with the most acidic on the left. CrO, Cr₂ O₃ , CrO₃

Choose the INCORRECT statement.

Zinc oxide, a useful fungicide, can be prepared from zinc blende ore by roasting the ore in air and then purifying the resulting oxide. What mass of zinc oxide could be obtained from 5.00 kg of a zinc blende ore that analyzed at 48.6% zinc sulfide, if the net conversion is 66.7% efficient?

Which of the following is uncharacteristic for the elements of the first transition series?

Choose the INCORRECT statement.

Find the FALSE combination of a metallurgical process and its example:

Metallurgy is the general study of metals.

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?

What average current must be maintained to electroplate 6.5 g of chromium per hour from a solution of chromium(III) complex?

Which of the following statements is true regarding the oxidation states of the transition elements?

Choose the INCORRECT statement.