Co-Ordination Compounds Question 279
Question: In the complexes $ {{[Fe{{(H_2O)}_6}]}^{3+}},{{[Fe{{(CN)}_6}]}^{3-}} $ , $ {{[ Fe{{( C_2O_4 )}_3} ]}^{3-}} $ and $ {{[FeCl_6]}^{3-}} $ , more stability is shown by
Options:
A) $ {{[Fe{{(H_2O)}_6}]}^{3+}} $
B) $ {{[Fe{{(CN)}_6}]}^{3-}} $
C) $ {{[Fe{{(C_2O_4)}_3}]}^{3-}} $
D) $ {{[FeCl_6]}^{3-}} $
Show Answer
Answer:
Correct Answer: C
Solution:
$ {{[ Fe{{( C_2O_4 )}_3} ]}^{3-}} $ .
The iron is present in the highest oxidation state $ F{e^{3+}} $ and $ C_2O{{_4^{2-}}^{~}} $ is a chelating ligand.
Chelates are always form more stable complexes
