12th Chemistry Monthly Test - 1 ( Coordination Chemistry )

St. Britto Hr. Sec. School - Madurai

12th Chemistry Monthly Test - 1 ( Coordination Chemistry )-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Oxidation state of Iron and the charge on the ligand NO in [Fe(H₂O)₅NO]SO₄ are

+2 and 0 respectively
+3 and 0 respectively
+3 and -1 respectively
+1 and +1 respectively

Paramagnetism is the property of

paired electrons
completely filled electronic sub-shells
unpaired electrons
completely vacant electronic sub-shells

[FeF₆]^4- is paramagnetic because

F^-is a weaker ligand
F^- is a strong ligand
F^-is a flexidentate ligand
F^- is a chelating ligand

Predict the geometry and hybridisation of Fe(Co)₅

Trigonal planar, dsp³
Trigonal bipyramidal, dsp³
Square planar dsp²
Octahedral d²sp³

Which of the following co-ordination compounds would exhibit optical isomerism?

Pemtaamminenitrocobalt (III) iodide
Diamminedichloropaltinum (II)
Tris-(ethylenediamine) cobalt (III) bromide
Transdicyanobis( ethylenediamine) chromium (III) chloride

Which of these statements about [Co(CN)₆]^3- is true?
[CO(CN)₆]^3- has four unpaired electrons and will be in a high spin configuration

[Co(CN)₆]^3- has four unpaired electrons and will be in a low spin configuration

[CO(CN)₆]^3- has no unpaired electrons and will be in a high spin configuration

[CO(CN)₆]^3- has no unpaired electrons and will be in low spin configuration
An aqueous solution of (PdCI)₂ 4NH_3,when treated with excess of AgNO₃precipitated 2 moles of AgCI. Predict the secondary valency of the compound.
2

3

4

6

Primary and secondary valencies of Cu in [Cu(NH₃)₄]SO₄ is

An excess of silver nitrate is added to 100ml of a 0.01M solution of pentaaquachloridochromium(III)chloride. The number of moles of AgCl precipitated would be

0.02
0.002
0.01
0.2

Ligand which is used to treat hard water

NH₃
Ox
en
EDTA

Which of the following will exhibit linkage isomerism? :

[Co(NH₃)₅ (NO₂)]²⁺
[Co(H₂O)₅CO)]³⁺
[Fe(en)₂CI₂]⁺
all the above

[Ni(Co)₄] is a_____________ complex.

anionic
cationic
neutral
ambidentate

In co-ordination complexes. geometrical isomerism is possible for ______________ complexes.

square planar
tetrahedral
octahedral
both (a) and (c)

Which among the following square planar complexes will exhibet geometrical isomerism?

[Ma₂B₂]^n±
[MA₂BC]^n±
[M(xy)]^n±
all the above

The hypothetical complex triamminediaqua chloridocobalt (III)chloride can be represented as

[Co(NH₃)₃(H₂O)₂Cl]Cl₂
[Co(NH)₃(H₂O)Cl₃]
[Co(NH₂)₃(H₂O)₂Cl]
[Co(NH₃)₃(H₂O)₃]Cl₃

An example of a chelating ligand is

NO^-2
Chloro
Bromo
en

Part - B

Generic 2 - Answer All Question

What are solvate isomers?

Write the formula of copper hexacyanoferrate(II)

Calculate the magnetic moment of [Fe(H₂O)₆]²⁺, if atomic number of Fe is 26.

[Co(NH₃)₆]³⁺ is diamagnetic where as [CoF₆]^3- is paramagnetic explain.

Name the type of isomerism that occurs in complexes in which both cation and anion are complex ions.
Write a neutral molecule in which the central atom is Sp³ d² hybridised.

Name a complex used in the treatment of cancer.
Write the IUPAC name of the complex.

Calculate the ratio of \(\cfrac { \left[ { Ag }^{ + } \right] }{ \left[ Ag\left( NH_{ 3 } \right) _{ 2 } \right] ^{ + } } \) in 0.2 M solution of NH_3. If the stability constant for the complex \([Ag(NH_{ 3 })_{ 2 }]^{ \rightarrow }\)

What is facial isomer?

Write the IUPAC name of [Cu(NH₃)₄]SO₄

What is a central atom or ion?

What is mer isomer?

Calculate the Oxidation number of
(i) iron in [Fe(CN)₆]^4-.
(ii) Cobalt in [Co(NH₃)₅CI)]²⁺.

Name the following :
(i) Ring that is attached to Fe²⁺ in haemoglobin.
(ii) Vitamin B₁₂ is a co-ordination compound of this element.
(iii) Complex that is used in the hydrogenation of alkenes

What is hydrate isomerism? Give an example.

Give the names of two complexes which are used in medicines.

Part - C

Generic 3 - Answer All Question

Name some metal complexes, that are present in our biological system and their role in it.

Draw the structure of the following homoleptic metal carbonyl.
(i) [Ni(CO)₄]
(ii) [Fe(CO)₅]
(iii) [Cr(CO)₆]

Explain optical isomerism.

[Ni(CN)₄]^2- is diamagnetic, while [NiCl₄]^2- is paramagnetic , explain using crystal field theory.

How is magnitude of \({ \triangle }_{ 0 }\) affected by (i) nature of ligands (ii) oxidation state of metal ion.

What is the significance of stability constants?

Match the common name with formula and the IUPAC ligand name.

Common name Formula IUPAC ligand name

Bromide C₂O₄^2- Carbonato

Nitrate Br^- Oxalato

hydroxide NO₃^- hydroxido

Carbonate OH^- bromido

Oxalate CO₃^2- nitrato

Common name	Formula	IUPAC ligand name
Bromide	C₂O₄^2-	Carbonato
Nitrate	Br^-	Oxalato
hydroxide	NO₃^-	hydroxido
Carbonate	OH^-	bromido
Oxalate	CO₃^2-	nitrato

What are the limitations of VBT?

What is stability constant?
Give the difference between double salts and coordination compounds.

Write briefly about the applications of coordination compounds in volumetric analysis

Why tetrahedral complexes do not exhibit geometrical isomerism

Part - D

Generic 5 - Answer All Question

Explain optical isomerism in coordination compounds with an example.
How are Co-ordination compounds classified?

Write the oxidation state, coordination number , nature of ligand, magnetic property and electronic configuration in octahedral crystal field for the complex K₄[Mn(CN)₆]

How are metal carbonyls classified depending on the number of metal atoms?

Give the postulates and limitation of Werner's theory of co-ordination compounds.

Mention the type of hybridisation and magnetic property of the following complexes using VB theory a) [FeF₆]^4-b) [Fe(CN)₆]^4-

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12th Chemistry Monthly Test - 1 ( Coordination Chemistry )

St. Britto Hr. Sec. School - Madurai

12th Chemistry Monthly Test - 1 ( Coordination Chemistry )-Aug 2020

Part - A

Multiple Choice Question - Answer All Question

Oxidation state of Iron and the charge on the ligand NO in [Fe(H2O)5NO]SO4 are

Paramagnetism is the property of

[FeF6]4- is paramagnetic because

Predict the geometry and hybridisation of Fe(Co)5

Which of the following co-ordination compounds would exhibit optical isomerism?

Which of these statements about [Co(CN)6]3- is true?

An aqueous solution of (PdCI)2 4NH3, when treated with excess of AgNO3 precipitated 2 moles of AgCI. Predict the secondary valency of the compound.

Primary and secondary valencies of Cu in [Cu(NH3)4]SO4 is

An excess of silver nitrate is added to 100ml of a 0.01M solution of pentaaquachloridochromium(III)chloride. The number of moles of AgCl precipitated would be

Ligand which is used to treat hard water

Which of the following will exhibit linkage isomerism? :

[Ni(Co)4] is a_____________ complex.

In co-ordination complexes. geometrical isomerism is possible for ______________ complexes.

Which among the following square planar complexes will exhibet geometrical isomerism?

The hypothetical complex triamminediaqua chloridocobalt (III)chloride can be represented as

An example of a chelating ligand is

Part - B

Generic 2 - Answer All Question

What are solvate isomers?

Write the formula of copper hexacyanoferrate(II)

Calculate the magnetic moment of [Fe(H2O)6]2+, if atomic number of Fe is 26.

[Co(NH3)6]3+ is diamagnetic where as [CoF6]3- is paramagnetic explain.

Name the type of isomerism that occurs in complexes in which both cation and anion are complex ions.

Write a neutral molecule in which the central atom is Sp3 d2 hybridised.

Name a complex used in the treatment of cancer.

Write the IUPAC name of the complex.

Calculate the ratio of \(\cfrac { \left[ { Ag }^{ + } \right] }{ \left[ Ag\left( NH_{ 3 } \right) _{ 2 } \right] ^{ + } } \) in 0.2 M solution of NH3. If the stability constant for the complex \([Ag(NH_{ 3 })_{ 2 }]^{ \rightarrow }\)

What is facial isomer?

Write the IUPAC name of [Cu(NH3)4]SO4

What is a central atom or ion?

What is mer isomer?

Calculate the Oxidation number of (i) iron in [Fe(CN)6]4-. (ii) Cobalt in [Co(NH3)5CI)]2+.

Name the following : (i) Ring that is attached to Fe2+ in haemoglobin. (ii) Vitamin B12 is a co-ordination compound of this element. (iii) Complex that is used in the hydrogenation of alkenes

What is hydrate isomerism? Give an example.

Give the names of two complexes which are used in medicines.

Part - C

Generic 3 - Answer All Question

Name some metal complexes, that are present in our biological system and their role in it.

Draw the structure of the following homoleptic metal carbonyl. (i) [Ni(CO)4] (ii) [Fe(CO)5] (iii) [Cr(CO)6]

Explain optical isomerism.

[Ni(CN)4]2- is diamagnetic, while [NiCl4]2- is paramagnetic , explain using crystal field theory.

How is magnitude of \({ \triangle }_{ 0 }\) affected by (i) nature of ligands (ii) oxidation state of metal ion.

What is the significance of stability constants?

Match the common name with formula and the IUPAC ligand name. Common name Formula IUPAC ligand name Bromide C2O42- Carbonato Nitrate Br- Oxalato hydroxide NO3- hydroxido Carbonate OH- bromido Oxalate CO32- nitrato

What are the limitations of VBT?

What is stability constant?

Give the difference between double salts and coordination compounds.

Write briefly about the applications of coordination compounds in volumetric analysis

Why tetrahedral complexes do not exhibit geometrical isomerism

Part - D

Generic 5 - Answer All Question

Explain optical isomerism in coordination compounds with an example.

How are Co-ordination compounds classified?

Write the oxidation state, coordination number , nature of ligand, magnetic property and electronic configuration in octahedral crystal field for the complex K4[Mn(CN)6]

How are metal carbonyls classified depending on the number of metal atoms?

Give the postulates and limitation of Werner's theory of co-ordination compounds.

Mention the type of hybridisation and magnetic property of the following complexes using VB theory a) [FeF6]4- b) [Fe(CN)6]4-

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Oxidation state of Iron and the charge on the ligand NO in [Fe(H₂O)₅NO]SO₄ are

[FeF₆]^4- is paramagnetic because

Predict the geometry and hybridisation of Fe(Co)₅

Which of these statements about [Co(CN)₆]^3- is true?

An aqueous solution of (PdCI)₂ 4NH_3,when treated with excess of AgNO₃precipitated 2 moles of AgCI. Predict the secondary valency of the compound.

Primary and secondary valencies of Cu in [Cu(NH₃)₄]SO₄ is

[Ni(Co)₄] is a_____________ complex.

Calculate the magnetic moment of [Fe(H₂O)₆]²⁺, if atomic number of Fe is 26.

[Co(NH₃)₆]³⁺ is diamagnetic where as [CoF₆]^3- is paramagnetic explain.

Write a neutral molecule in which the central atom is Sp³ d² hybridised.

Calculate the ratio of \(\cfrac { \left[ { Ag }^{ + } \right] }{ \left[ Ag\left( NH_{ 3 } \right) _{ 2 } \right] ^{ + } } \) in 0.2 M solution of NH_3. If the stability constant for the complex \([Ag(NH_{ 3 })_{ 2 }]^{ \rightarrow }\)

Write the IUPAC name of [Cu(NH₃)₄]SO₄

Calculate the Oxidation number of
(i) iron in [Fe(CN)₆]^4-.
(ii) Cobalt in [Co(NH₃)₅CI)]²⁺.

Name the following :
(i) Ring that is attached to Fe²⁺ in haemoglobin.
(ii) Vitamin B₁₂ is a co-ordination compound of this element.
(iii) Complex that is used in the hydrogenation of alkenes

Draw the structure of the following homoleptic metal carbonyl.
(i) [Ni(CO)₄]
(ii) [Fe(CO)₅]
(iii) [Cr(CO)₆]

[Ni(CN)₄]^2- is diamagnetic, while [NiCl₄]^2- is paramagnetic , explain using crystal field theory.

Match the common name with formula and the IUPAC ligand name.

Common name Formula IUPAC ligand name

Bromide C₂O₄^2- Carbonato

Nitrate Br^- Oxalato

hydroxide NO₃^- hydroxido

Carbonate OH^- bromido

Oxalate CO₃^2- nitrato

Write the oxidation state, coordination number , nature of ligand, magnetic property and electronic configuration in octahedral crystal field for the complex K₄[Mn(CN)₆]

Mention the type of hybridisation and magnetic property of the following complexes using VB theory a) [FeF₆]^4-b) [Fe(CN)₆]^4-