Question 1

In the formation of a transition metal complex, the central metal atom or ion acts as

Accepted Answer

A)  an Arrhenius acid.
B)  a Bronsted-Lowry acid.
C)  a Bronsted-Lowry base.
D)  a Lewis acid.
E)  a Lewis base.F) B) and D)
G) A) and E)

Question 2

Which of the following elements has the ground state electron configuration, [Xe]4f145d106s1?

Accepted Answer

A)  Hg
B)  Ag
C)  Hf
D)  Au
E)  ThF) A) and E)
G) B) and C)

Question 3

What is the highest possible oxidation state for molybdenum, Mo?

Accepted Answer

A)  +2
B)  +4
C)  +6
D)  +8
E)  None of these choices are correct.F) B) and C)
G) A) and E)

Question 4

Which of the following will be diamagnetic?

Accepted Answer

A)  Ni 2+
B)  Cr 2+
C)  Mn 2+
D)  Co 3+
E)  Ti 4+F) A) and C)
G) All of the above

Question 5

Give the systematic name for Cr(CO) 3(NH3) 3.

Accepted Answer

A)  Chromiumtriaminotricarbonyl
B)  Triamminechromium carbonate
C)  Triamminetricarbonylchromate(0) 
D)  Triamminetricarbonylchromium(0) 
E)  None of these choices are correct.F) A) and D)
G) None of the above

Question 6

In the compound K[Co(C2O4) 2(H2O) 2] (where C2O42- = oxalate)  the oxidation number and coordination number of cobalt are, respectively

Accepted Answer

A)  −1 and 4.
B)  −1 and 6.
C)  3 and 4.
D)  3 and 6.
E)  1 and 6.F) A) and B)
G) A) and D)

Question 7

Aluminum reacts with oxygen in the air to form a protective oxide coating. Silver also reacts with compounds in air to form a black coating. What substance is formed?

Accepted Answer

A)  Silver oxide
B)  Silver chloride
C)  Silver sulfide
D)  Silver carbonate
E)  Silver nitrideF) A) and B)
G) A) and C)

Question 8

The ground state electronic configuration of Cr2+ is

Accepted Answer

A)  [Ar]4 s 13 d 5.
B)  [Ar]4 s 23 d 4.
C)  [Ar]3 d 4.
D)  [Ar]4 s 13 d 3.
E)  [Ar]4 s 23 d 2.F) A) and E)
G) B) and E)

Question 9

Which of the following ions is least likely to form colored compounds?

Accepted Answer

A)  Mn 2+
B)  Cr 5+
C)  Sc 3+
D)  Fe 3+
E)  Co 2+F) B) and E)
G) A) and C)

Question 10

A certain transition element has the stable oxidation states of +2, +3, +4, +5, and +6. In which state will the element be most likely to form an ionic bond with chlorine?

Accepted Answer

A)  +2
B)  +3
C)  +4
D)  +5
E)  +6F) D) and E)
G) C) and D)

Question 11

Which of the following is considered a bidentate ligand?

Accepted Answer

A)  Cyanide, CN −
B)  Thiocyanate, SCN −
C)  Oxalate, C 2O 4 2−
D)  Nitrite, NO 2 −
E)  Hydroxide, OH −F) D) and E)
G) C) and D)

Question 12

In the presence of a strong octahedral ligand field, the number of unpaired electrons in Co(III)  will be

Accepted Answer

A)  0.
B)  2.
C)  4.
D)  6.
E)  None of these choices are correct.F) None of the above
G) A) and E)

Question 13

Which of the following should be the strongest reducing agent?

Accepted Answer

A)  Fe
B)  Ru
C)  Os
D)  Re
E)  CuF) A) and E)
G) A) and B)

Question 14

The most common oxidation state for ions of the inner transition elements is

Accepted Answer

A)  +2.
B)  +3.
C)  +4.
D)  +5.
E)  +7.F) A) and B)
G) B) and E)

Question 15

Write the formula for sodium tetracyanonickelate(II) .

Accepted Answer

A)  Na[Ni(CN) 4]
B)  Na[Ni(CN) 4] 2
C)  Na 2[Ni(CN) 4]
D)  Na 4[Ni(CN) 4]
E)  None of these choices are correct.F) B) and D)
G) All of the above

Question 16

According to valence bond theory, what would be the set of hybrid orbitals used when a Period 4 transition metal forms a tetrahedral complex?

Accepted Answer

A)  d 2 sp
B)  dsp 2
C)  dsp 3
D)  sp 3
E)  d 2 p 2F) B) and D)
G) B) and C)

Question 17

Square planar complexes can exhibit both geometric and optical isomerism.

Accepted Answer

A) True 
 B)False

Question 18

The compound K3[Fe(CN) 6] is used in calico printing and wool dyeing. Give its systematic name.

Accepted Answer

A)  Potassium iron(III) hexacyanate
B)  Tripotassium iron(III) hexacyanate
C)  Potassium hexacyanoferrate(III) 
D)  Potassium hexacyanideferrate
E)  None of these choices are correct.F) B) and E)
G) D) and E)

Question 19

A feature of transition metal chemistry is that these elements exhibit multiple oxidation states. Which one of the following elements exhibits the smallest number of different oxidation states?

Accepted Answer

A)  Ti
B)  Cr
C)  Mn
D)  Co
E)  ZnF) A) and D)
G) None of the above

Question 20

Valence Bond theory rationalizes octahedral geometry by assuming a d2sp3 hybridization pattern.

Accepted Answer

A) True 
 B)False

Exam 23: Transition Elements and Their Coordination Compounds

Write the formula for sodium tetracyanonickelate(II) .

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What is the highest possible oxidation state for molybdenum, Mo?

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Which of the following elements has the ground state electron configuration, [Xe]4f145d106s1?

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In the formation of a transition metal complex, the central metal atom or ion acts as

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In the compound K[Co(C2O4) 2(H2O) 2] (where C2O42- = oxalate) the oxidation number and coordination number of cobalt are, respectively

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Square planar complexes can exhibit both geometric and optical isomerism.

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A certain transition element has the stable oxidation states of +2, +3, +4, +5, and +6. In which state will the element be most likely to form an ionic bond with chlorine?

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Which of the following should be the strongest reducing agent?

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A feature of transition metal chemistry is that these elements exhibit multiple oxidation states. Which one of the following elements exhibits the smallest number of different oxidation states?

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In the presence of a strong octahedral ligand field, the number of unpaired electrons in Co(III) will be

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Give the systematic name for Cr(CO) 3(NH3) 3.

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Which of the following ions is least likely to form colored compounds?

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According to valence bond theory, what would be the set of hybrid orbitals used when a Period 4 transition metal forms a tetrahedral complex?

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Which of the following is considered a bidentate ligand?

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Valence Bond theory rationalizes octahedral geometry by assuming a d2sp3 hybridization pattern.

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Which of the following will be diamagnetic?

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The most common oxidation state for ions of the inner transition elements is

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The ground state electronic configuration of Cr2+ is

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Aluminum reacts with oxygen in the air to form a protective oxide coating. Silver also reacts with compounds in air to form a black coating. What substance is formed?

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The compound K3[Fe(CN) 6] is used in calico printing and wool dyeing. Give its systematic name.

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Which of the following elements has the ground state electron configuration, [Xe]4f¹⁴5d¹⁰6s¹?

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In the compound K[Co(C₂O₄) ₂(H₂O) ₂] (where C₂O₄²^- = oxalate) the oxidation number and coordination number of cobalt are, respectively

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Give the systematic name for Cr(CO) ₃(NH₃) ₃.

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Valence Bond theory rationalizes octahedral geometry by assuming a d²sp³ hybridization pattern.

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The ground state electronic configuration of Cr²⁺ is

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The compound K₃[Fe(CN) ₆] is used in calico printing and wool dyeing. Give its systematic name.

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