The colour of the coordination compounds depends on the crystal field splitting. What will be the correct order of absorption of wavelength of light in the visible region, for the complexes, [Co(NH₃)₆

Question

The colour of the coordination compounds depends on the crystal field splitting. What will be the correct order of absorption of wavelength of light in the visible region, for the complexes, [Co(NH₃)₆]³⁺, [Co(CN)₆]³⁻, [Co(H₂O)₆]³⁺?

TestHub · Accepted Answer

Crystal-field splitting rises in the ligand order H₂O < NH₃ < CN⁻. Absorbed wavelength is inversely proportional to splitting, so the wavelength order is H₂O > NH₃ > CN⁻. NCERT prints options (i) and (iv) identically.

Chemistry - Coordination Chemistry Question with Solution | TestHub

Options:

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