1.

Amongst the following, the most stable complex is :

Answer»

`[FE(H_(2)O)_(6)]^(3+)`
`[Fe(NH_(3))_(6)]^(3+)`
`[Fe(C_(2)O_(4))_(3)]^(3-)`
`[FeCl_(6)]^(3-)`

Solution :Complexes CONTAINING didentate or polydentate ligands are more stable than those containing monodentate ligands. In each of the given complex, Fe is in +3 STATE. As `C_(2)O_(4)^(2-)` is didentate chelating ligand, hence is the most stable complex.


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