JEE Main 2014Session, Shift 1ChemistryMediumCoordination Compounds198× since 2002
The octahedral complex of a metal ion M³⁺ with four monodentate ligands L₁, L₂, L₃ and L₄ absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands is :