Question

Homoleptic octahedral complexes of a metal ion 'M³⁺' with three monodentate ligands L₁, L₂ and L₃ absorb wavelengths in the region of green, blue and red respectively. The increasing order of the ligand strength is:

(1) L₂ < L₁ < L₃ 

(2) L₃ < L₂ < L₁

 (3) L₃ < L₁ <L₂ 

(4) L₁ < L₂ < L₃

Answer 1

The correct option (2) L₃ < L₂ < L₁

Explanation:

If ligand strength is high crystal field splitting is high so energy absorbed is high so wave length is low So L₃ < L₂ < L₁