question_answer 41)

Amongst the following, the most stable complex is : (i) [Fe(H2O)6]3+                  (iii) [Fe(C2O4)3]3–              (iv) [FeCI6]3+

Answer:

Ans.       In all these complexes, Fe is in +3 state. As is didentate chelating ligand, it forms chelate rings and hence (iii) is the most stable complex.