Describe the difference in the reactivity tests when the iron complex is treated with SCN by itself and then in the presence of acid. How can the difference be explained?

[NİCI2(PPH3)2] is paramagnetic while [PtCl2(PPH3)2] is diamagnetic, what are the possible structures for these complexes? Please explain why they have different magnetic properties.

When Werner's student Edith Humphrey first synthesized the complex complex salts of formula [Co(en)2(NO2)2]X, they were taken to be O-bonded forms of nitrate. Only later were they identified as N-bonded. Write the formulas of and name both the linkage isomers of this compound where X is AuCl4-.

Draw the energy level diagram which shows the effect of incorporating a ë-donor ligand into an octahedral complex. Comment on the relative magnitude of A. and give an example of such a ligand.