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Coordination Compounds

Short Answer Type

61.

Which of the two is more stable K₄[Fe(CN)₆] or K₃[Fe(CN)₆].

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62.

Draw cis- and trans-isomers of [Pt(NH₃)₂Cl₂].

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63.

Write IUPAC name of K₃[Fe(C₂O₄)₃].

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64.

Give two complexes which are used in medicines.

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65. [Fe(CN)₆]^3– is weakly paramagnetic while [Fe(CNO)₆]^4– is diamagnetic, why?

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66.

A coordination compound has the formula CoCl₃.4NH₃. It does not liberate NH₃but forms a precipitate of AgCl on treatment with AgNO₃ solution. Write the structure and IUPAC name of the complex.

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67.
Explain why chelating complex is more stable than unchelated complex?

Chelating ligand can form a ring with central metal. Therefore it have ability to regulate electron with in ring. Because of it there is more force of attraction between central metal ion chelating agent, therefore, they are more stable.

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