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Linkage Isomerism

Among the fol...

Question

Among the following, the most stable complex is:

A

[F e (H_{2} O)_{6}]^{3 +}

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B

[F e (N H_{3})_{6}]^{3 +}

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C

[F e (C_{2} O_{4})_{3}]^{3 -}

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D

[F e C I_{6}]^{3 -}

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Solution

The correct option is A $[F e (C_{2} O_{4})_{3}]^{3 -}$
Chelating ligands( ${C_{2} O_{4}}^{2 -}$ ) form more stable complex when compared to monodentate ligands( $N H_{3}, H_{2} O, I)$ due to the chelate effect. Hence C is the correct answer

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Similar questions

Q. Amongst the following, the most stable complex is:
(i)

[F e (H_{2} O)_{6}]^{3 +}

[F e (N H_{3})_{6}]^{3 +}

[F e (C_{2} O_{4})_{3}]^{3 -}

[F e C l_{6}]^{3 -}

Amongst the following, the most stable complex is

(i) [Fe(H₂O)₆]³⁺

(ii) [Fe(NH₃)₆]³⁺

(iii) [Fe(C₂O₄)₃]^3-

(iv) [FeCl₆]^3-

Q. In the complexes

[F e (H_{2} O)_{6}]^{3 +}, [F e (C N)_{6}]^{3 -}, [F e (C_{2} O_{4})_{3}]^{3 -}

[F e C l_{6}]^{3 -}

most stable is:

Q. Out of the complexes

{[F e (H_{2} O)_{6})]}^{3 +}

{[F e {(C N)}_{6}]}_{6}^{3 -}

{[F e {(C_{2} O_{4})}_{3}]}_{3}^{3 -}

{[F e {(C l)}_{6}]}_{6}^{3 -}

, the most stable one is:

Which of the following statements is/are true for the complexes, $[F e (H_{2} O)_{6}]^{2 +}, [F e (C N)_{6}]^{3 -}, [F e (C_{2} O_{4})_{3}]^{3 -}$ and $[F e (C O)_{5}]$ ?

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