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Coordination Compounds — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds1 Mark
Question
The stabilisation of coordination compounds due to chelation is called the chelate effect. Which of the following is the most stable complex species?
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Answer

Chelation $($formation of cycle by linkage between metal ion and ligand$)$ stabilizes the coordination compound. The ligand which chelates the metal ion are known as chelating ligand.
Here, only $[\ce{Fe(C2O4)3}]^{3-}$ is a coordination compound which contains oxalate ion as a chelating ligand. Hence, it stabilizes coordination compound by chelating $\ce{Fe}^{3+}$ ion.

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