The octahedral complex of a metal ion

Question:

The octahedral complex of a metal ion $\mathrm{M}^{3+}$ with four monodentate ligands $\mathrm{L}_{1}, \mathrm{~L}_{2}, \mathrm{~L}_{3}$ and $\mathrm{L}_{4}$ absorb wavelength in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands is:

  1. $\mathrm{L}_{3}<\mathrm{L}_{2}<\mathrm{L}_{4}<\mathrm{L}_{1}$

  2. $\mathrm{L}_{1}<\mathrm{L}_{2}<\mathrm{L}_{4}<\mathrm{L}_{3}$

  3. $\mathrm{L}_{4}<\mathrm{L}_{3}<\mathrm{L}_{2}<\mathrm{L}_{1}$

  4. $\mathrm{L}_{1}<\mathrm{L}_{3}<\mathrm{L}_{2}<\mathrm{L}_{4}$


Correct Option: , 4

Solution:

Solution not required

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