Assertion : A chelating ligand must possess t | vedclass

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(C) The Assertion is correct because a chelating ligand requires donor atoms positioned to form stable,strain-free rings (typically $5$ or $6$ membere

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If the Assertion is correct but Reason is incorrect.

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(C) The Assertion is correct because a chelating ligand requires donor atoms positioned to form stable,strain-free rings (typically $5$ or $6$ membered) with the metal ion.The Reason is incorrect because hydrazine $(H_2N-NH_2)$ acts as a monodentate ligand. Coordination by hydrazine would result in a $3$-membered ring,which is highly unstable due to significant angle strain,thus it does not act as a chelating ligand.

Assertion : $A$ chelating ligand must possess two or more lone pairs at such a distance that it may form suitable strain-free rings at the metal ion.
Reason : $H_2N-NH_2$ is a chelating ligand.

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Assertion : $A$ chelating ligand must possess two or more lone pairs at such a distance that it may form suitable strain-free rings at the metal ion.Reason : $H_2N-NH_2$ is a chelating ligand.