MHT CET202525 Apr 2025Evening ShiftChemistryCoordination CompoundsActual
Identify the correct increasing order of field strength of ligands form following.
Options
- ACl ⁻ < I ⁻ < S ²⁻ < OH ⁻
- BI ⁻ < Cl ⁻ < S ²⁻ < OH ⁻
- COH ⁻ < Cl ⁻ < I ⁻ < S ²⁻
- DS ²⁻ < OH ⁻ < I ⁻ < Cl ⁻
Correct answer
B. I ⁻ < Cl ⁻ < S ²⁻ < OH ⁻
Step-by-step solution
The spectrochemical series ranks ligands by crystal field splitting strength . The general increasing order for common ligands is: I ⁻ Among the given ligands, I ⁻ is the weakest due to its large size and strong -donation, while OH ⁻ is the strongest owing to oxygen's high electronegativity and effective -donation. Chloride Cl ⁻ is stronger than iodide but weaker than hydroxide. Sulfide S ²⁻ , with its higher charge, typically exhibits intermediate strength. Comparing the options: A) Cl ⁻ B) I ⁻ C) OH ⁻ D) S ²⁻ The