Question 1

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) None of the above
G) B) and E)

Question 2

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) A) and C)
G) A) and D)

Question 3

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 E)
G) A) and B)

Question 4

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 D)
G) A) and C)

Question 5

Which of the following atoms has the biggest radius?

Accepted Answer

A)  Ti
B)  Cr
C)  Fe
D)  Ni
E)  ZnF) B) and D)
G) All of the above

Question 6

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) B) and C)
G) B) and D)

Question 7

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) A) and B)
G) All of the above

Question 8

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

Accepted Answer

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

Question 9

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) A) and E)

Question 10

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

Question 11

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) B) and D)
G) B) and E)

Question 12

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) All of the above
G) A) and C)

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

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 C)
G) C) and D)

Question 15

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

Accepted Answer

A)  5
B)  4
C)  3
D)  2
E)  1F) B) and C)
G) All of the above

Question 16

Tetrahedral complexes can exhibit both optical and linkage isomerism.

Accepted Answer

A) True 
 B)False

Question 17

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) A) and E)
G) A) and D)

Question 18

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 B)
G) A) and C)

Question 19

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 C)
G) A) and E)

Question 20

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

Exam 23: Transition Elements and Their Coordination Compounds

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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Which of the following will be paramagnetic?

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The ground state electronic configuration of Zn2+ is

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

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

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

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

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Write the formula for pentaamminechlorocobalt(III) chloride.

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Tetrahedral complexes can exhibit both optical and linkage isomerism.

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

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

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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 atoms has the biggest radius?

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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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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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The ground state electronic configuration of Zn²⁺ is

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

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

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