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  • Which of the following is not a chelating agent?Option: 1 EDTA4-Option: 2 en

Which of the following is not a chelating agent?

Option: 1

EDTA4-


Option: 2

en


Option: 3

Oxalate


Option: 4

Pyridine


Answers (1)

best_answer

As we have learnt,

Chelates are cyclic structures obtained when ligands with denticity two or higher are co-ordinated to the central metal atom/ion.

Pyridine is a monodentate ligand. Pyridine co-ordinates with a metal only from one site, i.e the lone pair on N and hence, it is not able to form a Chelate.

EDTA4- is a hexadentate ligand while ethylenediamine(en) and oxalate(ox) ions are bidentate.

Therefore, option (4) is correct.

Posted by

seema garhwal

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