Simplified absorption spectra of three complexes ((i), (ii) and (iii)) of Mⁿ⁺ ion are provided below; their λ_max values are marked as A, B and C respectively. The correct match between the complexes and their λ_max values is:
(i) [M(NCS)₆]⁽⁻⁶⁺ⁿ⁾
(ii) [MF₆]⁽⁻⁶⁺ⁿ⁾
(iii) [M(NH₃)₆]ⁿ⁺
Simplified absorption spectra of three complexes ((i), (ii) and (iii)) of Mⁿ⁺ ion are provided below; their λ_max values are marked as A, B and C respectively. The correct match between the complexes and their λ_max values is:
(i) [M(NCS)₆]⁽⁻⁶⁺ⁿ⁾
(ii) [MF₆]⁽⁻⁶⁺ⁿ⁾
(iii) [M(NH₃)₆]ⁿ⁺
Ligand field strength: NH? > NCS? > F? Stronger ligand, higher Δ, lower λ_max.
So λ (NH? ) < λ (NCS? ) < λ (F? ). A=λ (F? ), B=λ (NCS? ), C=λ (NH? ). A-ii, B-i, C-iii.
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