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Question

Which of the following ligands is not a chelating agent?

A
EDTA
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B
Ethylene diamine
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C
Oxalate
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D
Pyridine
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Solution

The correct option is D Pyridine
For a ligand to be a chelating ligand, it should have atleast 2 donor sites and the chelate formed should be a 5 or 6 member ring.

Hence, pyridine, which is a monodentate ligand, cannot be chelating.

Option D is correct.

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