Coordination Compounds

Short Answer Type

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Give one example of hexadentate ligand. Give its use. 

EDTA (ethylene diamine tetra acetate). It is used to measure hardness of water. It has six donor atoms.
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    How many coordination sites are there in ethylene diamine CH3NH2?

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    FeSO4 solution mixed with (NH4)2SO4 solution in 1 : 1 molar ratio gives the test of Fe2+ ion but CuSO4 solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu2+ ion. Explain why?
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    Give the geometry and magnetic character of [NiCl4]2–?

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    What is coordination number? Give coordination of Co in [Co(en)3]3+ ion.

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    Which type of ligands form chelates?

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    What is the oxidation state of Ni in Ni(CO)4?

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    Illustrate the geometrical isomers of [Pt(NH3)4Cl2]+.

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    What is the shape of [Co(NH3)6]3+ complex ion?

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    What are the most common coordination number encountered in coordination compounds?

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