Question 1

Tetrahedral complexes can exhibit both optical and linkage isomerism.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following atoms has the biggest radius?

Accepted Answer

A)  Ti
B)  Cr
C)  Fe
D)  Ni
E)  ZnF) A) and D)
G) A) and E)

Question 3

In the compound [Ni(en) 2(H2O) 2]SO4 (where en = ethylenediamine)  the oxidation number and coordination number of nickel are, respectively

Accepted Answer

A)  2 and 6.
B)  4 and 6.
C)  6 and 6.
D)  2 and 4.
E)  4 and 4.F) A) and E)
G) All of the above

Question 4

According to Valence Bond theory, in the square planar Ni(CN) 42− complex ion, the orbital hybridization pattern is

Accepted Answer

A)  sp 3.
B)  dsp 2.
C)  d 2 sp.
D)  d 2 sp 3.
E)  None of these choices are correct.F) C) and E)
G) C) and D)

Question 5

The ground state electronic configuration of Zn2+ is

Accepted Answer

A)  [Ar]4 s 23 d 8.
B)  [Ar]4 s 23 d 10.
C)  [Ar]4 s 13 d 9.
D)  [Ar]3 d 10.
E)  [Ar]3 d 8.F) A) and E)
G) B) and E)

Question 6

Which of the following ions could exist in only the high-spin state in an octahedral complex?

Accepted Answer

A)  Cr 2+
B)  Mn 4+
C)  Fe 3+
D)  Co 3+
E)  Ni 2+F) B) and C)
G) A) and D)

Question 7

In complexes of transition metals, the maximum coordination number of the metal is equal to its number of d electrons.

Accepted Answer

A) True 
 B)False

Question 8

How many unpaired electrons are there in the Fe3+ ion?

Accepted Answer

A)  5
B)  4
C)  3
D)  2
E)  1F) A) and B)
G) A) and E)

Question 9

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

Accepted Answer

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

Question 10

Write the formula for pentaamminechlorocobalt(III)  chloride.

Accepted Answer

A)  [Co(NH 3) 5Cl]Cl
B)  [Co(NH 3) 5Cl]Cl 2
C)  [Co(NH 3) 5Cl]Cl 3
D)  [Co(NH 3) 5Cl]Cl 4
E)  None of these choices are correct.F) A) and C)
G) B) and D)

Question 11

What is the highest possible oxidation state for palladium, Pd?

Accepted Answer

A)  +1
B)  +2
C)  +3
D)  +4
E)  +6F) A) and E)
G) A) and D)

Question 12

When the ethylenediaminetetraacetate ion (EDTA4-)  forms a complex with a transition metal ion, how many electrons does it normally donate to the metal?

Accepted Answer

A)  4
B)  6
C)  8
D)  10
E)  12F) A) and D)
G) B) and D)

Question 13

Give the systematic name for [CoCl3(H2O) ]-.

Accepted Answer

A)  Cobalt(II) chloride monohydrate
B)  Aquatrichlorocobalt(II) 
C)  Aquatrichlorocobaltate(II) 
D)  Aquatrichlorocobaltite(I) 
E)  None of these choices are correct.F) B) and C)
G) A) and B)

Question 14

Which of the oxidation states of chromium has the largest valence-state electronegativity?

Accepted Answer

A)  Chromium(0) 
B)  Chromium(II) 
C)  Chromium(III) 
D)  Chromium(IV) 
E)  Chromium(VI) F) C) and E)
G) C) and D)

Question 15

Consider the following structures (1 and 2 are octahedral; 3 and 4 are square planar) .  Which one of the following statements about the above structures is correct?

Accepted Answer

A)  1 and 2 are superimposable.
B)  1 and 2 are geometric isomers.
C)  3 and 4 are structural isomers.
D)  3 and 4 are optical isomers.
E)  3 and 4 are geometric isomers.F) B) and D)
G) C) and D)

Question 16

Octahedral complexes can exhibit geometric, optical, and linkage isomerism.

Accepted Answer

A) True 
 B)False

Question 17

If M represents a transition element, which of the following oxides should be the least basic?

Accepted Answer

A)  MO
B)  M 2O
C)  M 2O 3
D)  MO 2
E)  MO 3F) A) and E)
G) C) and D)

Question 18

Which of the following will be paramagnetic?

Accepted Answer

A)  V 5+
B)  Ni 2+
C)  Mn 7+
D)  Ti 4+
E)  ZnF) A) and D)
G) A) and C)

Question 19

Which of the following octahedral complexes should have the largest crystal field splitting energy, Δ?

Accepted Answer

A)  [Cr(H 2O) 6] 3+
B)  [Cr(SCN) 6] 3−
C)  [Cr(NH 3) 6] 3+
D)  [Cr(CN) 6] 3−
E)  [Cr(en) 3] 3+ (en = ethylenediamine) F) A) and B)
G) D) and E)

Question 20

The M2+ ions of the first transition series of elements all have the general electronic configuration [Ar]4s23dx, where x is an integer from 1 to 8.

Accepted Answer

A) True 
 B)False

Exam 23: Transition Elements and Their Coordination Compounds

The M2+ ions of the first transition series of elements all have the general electronic configuration [Ar]4s23dx, where x is an integer from 1 to 8.

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The ground state electronic configuration of Zn2+ is

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Tetrahedral complexes can exhibit both optical and linkage isomerism.

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Consider the following structures (1 and 2 are octahedral; 3 and 4 are square planar) . Which one of the following statements about the above structures is correct?

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What is the highest possible oxidation state for palladium, Pd?

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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 square planar complex?

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How many unpaired electrons are there in the Fe3+ ion?

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Which of the following ions could exist in only the high-spin state in an octahedral complex?

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If M represents a transition element, which of the following oxides should be the least basic?

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Octahedral complexes can exhibit geometric, optical, and linkage isomerism.

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Give the systematic name for [CoCl3(H2O) ]-.

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Which of the following atoms has the biggest radius?

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When the ethylenediaminetetraacetate ion (EDTA4-) forms a complex with a transition metal ion, how many electrons does it normally donate to the metal?

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Which of the oxidation states of chromium has the largest valence-state electronegativity?

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Write the formula for pentaamminechlorocobalt(III) chloride.

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Which of the following will be paramagnetic?

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According to Valence Bond theory, in the square planar Ni(CN) 42− complex ion, the orbital hybridization pattern is

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In the compound [Ni(en) 2(H2O) 2]SO4 (where en = ethylenediamine) the oxidation number and coordination number of nickel are, respectively

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In complexes of transition metals, the maximum coordination number of the metal is equal to its number of d electrons.

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Which of the following octahedral complexes should have the largest crystal field splitting energy, Δ?

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The M²⁺ions of the first transition series of elements all have the general electronic configuration [Ar]4s²3d^x, where x is an integer from 1 to 8.

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The ground state electronic configuration of Zn²⁺ is

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How many unpaired electrons are there in the Fe³⁺ ion?

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Give the systematic name for [CoCl₃(H₂O) ]^-.

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When the ethylenediaminetetraacetate ion (EDTA⁴^-) forms a complex with a transition metal ion, how many electrons does it normally donate to the metal?

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According to Valence Bond theory, in the square planar Ni(CN) ₄²⁻ complex ion, the orbital hybridization pattern is

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In the compound [Ni(en) ₂(H₂O) ₂]SO₄ (where en = ethylenediamine) the oxidation number and coordination number of nickel are, respectively

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