In which of the following complexes the CFSE, 0 will be equal to zero ? (A) [Fe(en)3]Cl3 (B) K4[Fe(CN)6] (C) K3[Fe(SCN)6] (D) [Fe(NH3)6]Br2

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Question

In which of the following complexes the CFSE, 0 will be equal to zero ?

(A) [Fe(en)3]Cl3
(B) K4[Fe(CN)6]
(C) K3[Fe(SCN)6]
(D) [Fe(NH3)6]Br2

Prashant Kotian · Accepted Answer

Correct answer: C. K3[Fe(SCN)6] 26Fe+3 [Ar]3d5 , SCN– is weak field ligand. Therefore, ,1 ,1 g 2t , ,1 g e CFSE = (–0.4 × 3)0 + (0.6 × 2)0 CFSE = 0

💡 Solution & Explanation