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12th Chemistry Monthly Test - 2 ( Coordination Chemistry )

St. Britto Hr. Sec. School - Madurai

12th Chemistry Monthly Test - 2 ( Coordination Chemistry )-Aug 2020

Time : 2.00 Hours

Part - A

Generic 2 - Answer All Question

Name the following complex using IUPAC norms. [Co(en)₂ (ONO)CI]CI
Give an example of coordination compound used in medicine and two examples of biologically important coordination compounds

Write the IUPAC name of the complex.

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

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

Write the formula for the following coordination compounds.
a) potassiumhexacyanidoferrate(II)
b) petacarbonyliron(0)
c) pentaamminenitrito −k−N-cobalt(III)ion
d) hexaamminecobalt(III)sulphate
e) sodiumtetrafluoridodihydroxidochromate(III)

Name the metal present in
(i) Chlorophyll
(ii) Haemoglobin
(iii) Vitamin B₁₂
(iv) Cis - platin

What are Co-ordination isomers? Give examples

What are enantiomers?

Cu SO₄ on mixing with NH₃ (1:4 ratio) does not give test for Cu²⁺ ions but gives test for SO₄^2-ions why?

Give an example for the complexes possessing co-ordination number 8 and 7

Calculate the magnetic moment of [Fe(H₂O)₆]²⁺, if atomic number of Fe is 26.
Arrange the following in order of increasing molar conductivity
(i) Mg[Cr(NH₃)(Cl)₅]
(ii) Cr(NH₃)5Cl]₃[CoF₆]₂
(iii) [Cr(NH₃)₃Cl₃]

Give the formula and IUPAC ligand name for Ethylenediamine.

Write the IUPAC name of [Cu(NH₃)₄]SO₄

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

Write the IUPAC name of [Ag(NH₃)₂]Cl.

Give the chemical formula of potassium trioxalato ferrate(III}

What is Co-ordination entity?

Draw all possible geometrical isomers of the complex [Co(en)₂]⁺ and identify the optically active isomer.

How many geometrical isomers are possible in the following co-ordination entities?
(i) [Cr(C₂O₄)₃]^3-
(ii) [CO(NH₃)₃Cl₃]

What are ligands?

What is oxidation state of a central atom in a co-ordination entity?

Give the two isomers of Co₂(CO)₈.

What are stereoisomers?

Arrange the following complex ions in the increasing order of crystal filed splitting energy (\({ \triangle }_{ 0 }\)) [CrCI₆]^3-, [Cr(CN)₆]^3-, [Cr(NH₃)₆]³⁺

What is facial isomer?

Part - B

Generic 5 - Answer All Question

What are the main assumptions of Valence Bond Theory? Explain.

What are the postulates of valance bond theory? Give its limitations.

A solution of [Ni(H₂O)₆]²⁺ 2is green, whereas a solution of [Ni(CN)₄]^2- is colorless -Explain
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]

What is the coordination entity formed when excess of liquid ammonia is added to an aqueous solution copper sulphate?

Explain optical isomerism in coordination compounds with an example.

How are metal carbonyls classified based on the structure?

Indicate the types of isomerism exhibited by the following complexes and draw the structures for these isomers.
(i) K[Cr(H₂O)₂(C₂O₄)₂] (ii) [Co(en)₃]CI₃ (iii) [Co(NH₃)₅(NO₂)](NO₃)₂
(iv) [Pt (NH₃)(H₂O)CI₂]

Give the structure for the following compounds.
(i) pentaamminechlorocobalt (III) ion
(ii) Triamminetrinitrito- k N cobalt (III)
(ill) tetraammineaquabromidooobalt(III)nitrate
(iv) Dichloridobisethane-1 )2-diamine) cobalt (lIl) chloride
(v) Tetraamminecopper (lI)sulphate

What are the limitations of VB theory?

Give the IUPAC name for the following compounds.
(i) [Ag(NH₃)₂]CI
(ii) K₃[Fe(CN)₅NO]
(ill) [Cr(PPh₃)(CO)₃]
(iv) [Ag(NH₃)₂]⁺
(v) [FeF₆]^4-

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