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Coordination Compounds

Long Answer Type

191.

What is meant by stability of coordinate compound in solution? State the factors which govern stability of complexes.

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Short Answer Type

192. What is meant by the chelate effect? Give an example.

The stability which a coordinate compound achieve due to the formation of chelate or ring by a polydendate ligand is called chelate effect.

An example of a chelate ring occurs in the ethylenediamine-cadmium complex:

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193. Discuss briefly the role of coordination compounds in biological systems.

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194. Discuss briefly the role of coordination compounds in analytical chemistry.

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195. Discuss briefly the role of coordination compounds in medicinal chemistry.

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196. Discuss briefly the role of coordination compounds in extraction/metallurgy of metals.

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197.

What is macrocyclic effect?

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198.

How does the metal carbonyls gain stability although CO is a weak donor?

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199. [CoF₆]^3– is paramagnetic whereas [Co(C₂O₄)₃]^3– is diamagnetic. Why?

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200. [NiCl₄]^2– is paramagnetic in nature, explain.

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