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Tardigrade
Question
Chemistry
Amongst the following, the most stable complex is
Q. Amongst the following, the most stable complex is
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NTA Abhyas
NTA Abhyas 2022
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A
[Fe(H
2
O)
6
]
3+
B
[Fe(NH
3
)
6
]
3+
C
[Fe(C
2
O
4
)
3
]
3-
D
[FeCl
6
]
3-
Solution:
In all these complexes, Fe is in +3 oxidation state. However, the complex ([Fe(C
2
O
4
)
3
]
3-
) is a chelate because three
C
2
O
4
2
−
ions act as the chelating ligands. Thus, the most stable complex is [Fe(C
2
O
4
)
3
]
3-
.