Identify the correct statements from the foll | vedclass

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Question

(C) is correct: The chelate effect makes $[Fe(C_2O_4)_3]^{3-}$ more stable than complexes with monodentate ligands like $OH^-$ or $SCN^-$.$B$ is incor

Vedclass · Accepted Answer

$A, C$ and $D$ only

Vedclass · Answer

(C) is correct: The chelate effect makes $[Fe(C_2O_4)_3]^{3-}$ more stable than complexes with monodentate ligands like $OH^-$ or $SCN^-$.$B$ is incorrect: $[Cu(en)_2]^{2+}$ is more stable than $[Cu(NH_3)_4]^{2+}$ because $en$ (ethylenediamine) is a bidentate ligand that forms stable $5-$membered chelate rings.$C$ is correct: In $K_4[Fe(CN)_6]$, $Fe$ is in the $+2$ oxidation state ($d^6$ configuration). $CN^-$ is a strong field ligand, causing pairing of electrons, resulting in $d^2sp^3$ hybridization.$D$ is correct: $NO_2^-$ is an ambidentate ligand, so $[Fe(NO_2)_3Cl_3]^{3-}$ can exhibit linkage isomerism.$E$ is incorrect: $NO_2^-$ and $SCN^-$ are classic examples of ambidentate ligands.Therefore, statements $A, C,$ and $D$ are correct.

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