Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Coordination Compounds

Short Answer Type

171. Draw all the isomers (geometrical and optical) of
[Co(NH₃)Cl(en)₂ ]²⁺

238 Views

172. Draw all the isomers (geometrical and optical) of
[Co(NH₃)₂Cl₂(en)]⁺

802 Views

173. Write all the geometrical isomers of[Pt(NH₃)(Br)Cl(py)] and how many of these will exhibit optical isomers?

655 Views

174. Aqueous copper sulphate solution (blue in colour) gives:
(i) a green precipitate with aqueous potassium fluoride and
(ii) a bright green solution with aqueous potassium chloride. Explain these experimental results.

327 Views

175. What is the coordination entity formed when excess of aqueous KCN is added to an aqueous solution of copper sulphate? Why is it that no precipitate of copper sulphide is obtained when H₂S(g) is passed through this solution?

549 Views

176.

Draw figure to show splitting of d orbitals in an octahedral crystal field.

276 Views

177.

What is spectrochemical series? Explain the difference between a weak field ligand and a strong field ligand.

592 Views

178. Discuss the nature of bonding in the following coordination entities on the basis of valence bond theory.
[Fe(CN)₆]^4–

447 Views

179. Discuss the nature of bonding in the following coordination entities on the basis of valence bond theory.
[FeF₆]^3–

Bonding in [FeF₆]^3–The oxidation state of Fe is +3 and its coordination number is 6. The complex has octahedral geometry and experimental study shows that it is paramagnetic.

The bonding in this entity is explained on the basis of overlap of sp³d² hybrid orbitals of Fe³⁺ ion and six lone pair orbitals of cyanide ligands. Five 3d electrons are unpaired which make it paramagnetic. The outer electronic configuration of Fe³⁺ ion is 3d⁵ which is highly stable and no pairing of electrons takes place in presence of weak field of F^– ions. Here, 4d–orbitals of Fe³⁺ (which are empty) are involved.

The entity is strongly paramagnetic due to five unpaired electrons and is an outer orbital complex.