Assertion : $K_{2} [N i (E D T A)]$ is more stable than $K_{3} [A l (C_{2} O_{4})_{3}]$ . Reason: Ni is a transition element while Al is a non - transition element

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
EDTA is hexadentate ligand. $C_{2} O_{4}^{2 -}$ is bidentate ligand. Metal chelate formed by hexadentate ligands is more stable than that of bidentate ligands.

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