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Coordination Compounds

Short Answer Type

221. What is the basis of formation of the spectrochemical series?

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Long Answer Type

222.

Draw the structures of geometrical isomers of the following coordination complexes:
[Co(NH₃)₃Cl₃] and [CoCl₂(en)₂⁺]
(en = ethylene diamine and atomic number of Co is 27).

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223. Explain with examples geometric and optical isomerism.

341 Views

Short Answer Type

224. Mention the geometrical shapes attained by the following types of hybrid orbitals: (a) sp³, (b) dsp², (c) d²sp³. Give an example for each.

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Long Answer Type

225. Illustrate the isomerism:
Coordination isomerism in coordination compounds.

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Short Answer Type

226. A metal ion Mⁿ⁺ having d⁴ valence electronic configuration combines with three didendate ligands to form complex compound. Assuming ∧₀ > P.

(i) Draw the diagram showing d-orbital splitting during this complex formation.
(ii) Write the electronic configuration of the valence electrons of the metal Mⁿ⁺ in terms to t_2g, and e_g .

(iii) What type of hybridisation will Mⁿ⁺ ion have?

(iv) Name the type of isomerism exhibited by this complex.

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227.

Illustrate with an example of the following:
Linkage isomerism

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Long Answer Type

228.
(i) Explain geometrical isomerism with reference to square planar complexes giving one example. How is tetrahedral complexes with simple ligands do not exhibit geometrical isomerism?
(ii) Using valence bond theory, predict the shape and magnetism (paramagnetism) or diamagnetism of [Co(CO)₄]^– (at. no. of Co = 27)?
(iii) How is stability of coordination compounds determined in aqueous solution?

(i)

Tetrahedral complexes do not show geometrical isomerism because relative position of ligands are the same.

(ii) Co (27) = 4s²3d ⁷Co³⁺ = 4s°3d ⁶It has sp³ hybridisation, it is paramagnetic.

(iii) Stability of coordination compound in aqueous solution is determined with the help of stability constant. Higher the value of stability constant, greater will be stability. Smaller the cation, higher the charge on the cation, more stable will be the complex.