First slide

Stability of complexes

Question

The most stable ion is:

Easy

A

${[Fe {(C_{2} O_{4})}_{3}]}^{2 -}$
B

${[Fe {(Cl)}_{6}]}^{3 -}$
C

${[Fe {(CN)}_{6}]}^{3 -}$
D

${[Fe {(H_{2} O)}_{6}]}^{3 +}$

Solution

A more basic ligand and bidentate ligand form stable bond with metal ion due to chelation.

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