Question 1

In the coordination compound K2[Co(en) Cl4], the coordination number (C.N.) and oxidation number (O.N.) of cobalt are

Accepted Answer

A)  C.N.= 6; O.N.= +2.
B)  C.N.= 6; O.N.= +3.
C)  C.N.= 5; O.N.= +2.
D)  C.N.= 5; O.N.= +4.
E)  C.N.= 4; O.N.= +3.F) None of the above
G) A) and C)

Question 2

The best name for the complex shown below is

Accepted Answer

A)  cobalt(III) bis(ethylenediamine) bromide.
B)  dibromobis(ethylenediamine) cobalt(III) bromide.
C)  dibromidedi(ethylenediamine) cobalt(III) bromide.
D)  dibromodiethylenediaaminecobalt(III) bromide.
E)  tribromobis(ethylenediamine) cobalt(III) .F) All of the above
G) A) and B)

Question 3

Which response gives the correct coordination number (C.N.) and oxidation number (O.N.) of the transition metal atom in [Co(NH3) 2(H2O) 2Cl2]+?

Accepted Answer

A)  C.N.= 2; O.N.= +3
B)  C.N.= 3; O.N.= +1
C)  C.N.= 4; O.N.= +2
D)  C.N.= 6; O.N.= +1
E)  C.N.= 6; O.N.= +3F) A) and E)
G) A) and D)

Question 4

The coordination compound shown below has

Accepted Answer

A)  two monodentate ligands and two bidentate ligands.
B)  three monodentate ligands and two bidentate ligands.
C)  four monodentate ligands and two bidentate ligands.
D)  one monodentate ligand and four bidentate ligands.
E)  four bidentate ligands.F) D) and E)
G) C) and D)

Question 5

Cis-platinum complexes are

Accepted Answer

A)  used in the extraction of silver and gold.
B)  effective antidotes for heavy metal poisoning (e.g., Pb2+ and Hg2+) .
C)  used to provide nutrients for plants.
D)  used to prevent eutrophication of lakes.
E)  effective antitumor agents.F) A) and B)
G) A) and C)

Question 6

How many unpaired electrons are there in the complex ion [Mn(CN) 6]3-?

Accepted Answer

A)  0
B)  1
C)  2
D)  3
E)  4F) All of the above
G) A) and E)

Question 7

In the complex ion [ML6]n+, Mn+ has five d electrons and L is a strong field ligand.According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons?

Accepted Answer

A)  0
B)  1
C)  2
D)  3
E)  5F) A) and E)
G) A) and C)

Question 8

The total number of electrons in the 3d orbitals of a copper atom is

Accepted Answer

A)  6
B)  7
C)  8
D)  9
E)  10F) A) and E)
G) B) and C)

Question 9

Which of these square planar complex ions can have cis-trans isomers?

Accepted Answer

A)  [Pt(NH3) 4]2+
B)  [Ni(NH3) 4]2+
C)  [Pt(NH3) 2Cl2]
D)  [Pt(NH3) Cl3]-
E)  [Ni(NH3) 3Cl]+F) A) and B)
G) A) and C)

Question 10

What is the oxidation number of Fe in [Fe(CN)6]4-?

Accepted Answer

Question 11

Cis-trans isomerism is exhibited by which one of these ions?

Accepted Answer

A)  [Pd(NH3) 3Cl]+
B)  [Co(NH3) 5Cl]2+
C)  [Fe(CN) 6]3-
D)  All of the above.
E)  None of the above.F) None of the above
G) B) and C)

Question 12

The total number of electrons in the 3d orbitals of Co3+ is

Accepted Answer

A)  4
B)  5
C)  6
D)  7
E)  10F) A) and E)
G) A) and D)

Question 13

Which of these ligands produces the weakest crystal field?

Accepted Answer

A)  CN-
B)  I-
C)  OH-
D)  H2O
E)  NH3F) A) and D)
G) B) and C)

Question 14

The electron configuration of a Cr3+ ion is

Accepted Answer

A)  [Ar]3d5.
B)  [Ar]4s13d2.
C)  [Ar]3d3.
D)  [Ar]4s13d5.
E)  [Ar]4s23d4.F) None of the above
G) A) and B)

Question 15

In the complex ion [Cr(C2O4) 2(H2O) 2]-, the oxidation number of Cr is

Accepted Answer

A)  +1.
B)  +2.
C)  +3.
D)  -2.
E)  -1.F) A) and B)
G) A) and C)

Question 16

In the coordination compound [Pt(NH3) 2Cl2], the coordination number and oxidation number of the central atom are, respectively,

Accepted Answer

A)  2, 0.
B)  4, 4.
C)  5, 0.
D)  4, 2.
E)  6, 2.F) A) and C)
G) A) and B)

Question 17

What is the coordination number of cobalt in [Co(NH3)6]Cl3?

Accepted Answer

Question 18

Write the chemical formula of triammineaquodichlorochromium(III)chloride.

Accepted Answer

The answer of Write the chemical formula of triammineaquodichlorochromium(III)chloride....

Question 19

The electron configuration of a Ti atom is

Accepted Answer

A)  [Ne]3s23d2.
B)  [Ne] 3s24d2.
C)  [Ar]4s23d2.
D)  [Ar]4s24d2.
E)  [Ar]3d4.F) A) and E)
G) B) and C)

Question 20

Give (a)the oxidation number of the metal, (b)the number of d electrons, (c)the coordination number, (d)the charge of the complex ion, and (e)the number and type of ligands for the coordination compound shown below.

Accepted Answer

(a)+3, (b)3 d electr...

Exam 22: Transition Metal Chemistry and Coordination Compounds

In the coordination compound [Pt(NH3) 2Cl2], the coordination number and oxidation number of the central atom are, respectively,

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Which of these square planar complex ions can have cis-trans isomers?

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The electron configuration of a Cr3+ ion is

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In the complex ion [ML6]n+, Mn+ has five d electrons and L is a strong field ligand.According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons?

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How many unpaired electrons are there in the complex ion [Mn(CN) 6]3-?

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The electron configuration of a Ti atom is

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The total number of electrons in the 3d orbitals of Co3+ is

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What is the oxidation number of Fe in [Fe(CN)6]4-?

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What is the coordination number of cobalt in [Co(NH3)6]Cl3?

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Cis-platinum complexes are

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In the complex ion [Cr(C2O4) 2(H2O) 2]-, the oxidation number of Cr is

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Which response gives the correct coordination number (C.N.) and oxidation number (O.N.) of the transition metal atom in [Co(NH3) 2(H2O) 2Cl2]+?

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The coordination compound shown below has

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The total number of electrons in the 3d orbitals of a copper atom is

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Which of these ligands produces the weakest crystal field?

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Write the chemical formula of triammineaquodichlorochromium(III)chloride.

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Give (a)the oxidation number of the metal, (b)the number of d electrons, (c)the coordination number, (d)the charge of the complex ion, and (e)the number and type of ligands for the coordination compound shown below.

Correct Answerverified(a)+3, (b)3 d electr...View AnswerShow Answer

Cis-trans isomerism is exhibited by which one of these ions?

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The best name for the complex shown below is

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In the coordination compound K2[Co(en) Cl4], the coordination number (C.N.) and oxidation number (O.N.) of cobalt are

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In the coordination compound [Pt(NH₃) ₂Cl₂], the coordination number and oxidation number of the central atom are, respectively,

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The electron configuration of a Cr³⁺ ion is

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In the complex ion [ML₆]ⁿ⁺, Mⁿ⁺ has five d electrons and L is a strong field ligand.According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons?

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How many unpaired electrons are there in the complex ion [Mn(CN) ₆]^3-?

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The total number of electrons in the 3d orbitals of Co³⁺ is

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What is the oxidation number of Fe in [Fe(CN)₆]^4-?

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What is the coordination number of cobalt in [Co(NH₃)₆]Cl₃?

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In the complex ion [Cr(C₂O₄) ₂(H₂O) ₂]^-, the oxidation number of Cr is

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Which response gives the correct coordination number (C.N.) and oxidation number (O.N.) of the transition metal atom in [Co(NH₃) ₂(H₂O) ₂Cl₂]⁺?

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(a)+3, (b)3 d electr...
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In the coordination compound K₂[Co(en) Cl₄], the coordination number (C.N.) and oxidation number (O.N.) of cobalt are

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