BITSAT2023ChemistryCoordination CompoundsActual
Among the ligands NH ₃ , en, CN ⁻ and CO the correct order of their increasing field strength, is :
Options
- ANH ₃ < en < CN ⁻ < CO
- BCN ⁻ < NH ₃ < NH ₃ < en
- Cen < CN ⁻ < NH ₃ < CO
- DCO < NH ₃ < en < CN ⁻
Correct answer
A. NH ₃ < en < CN ⁻ < CO
Step-by-step solution
Ligands can be arranged in a series in the orders of increasing field strength as given below: Weak field ligands: I ⁻ Strong field ligands O ⁻⁻ Such a series is termed as spectrochemical series. It is an experimentally determined series based on the absorption of light by complexes with different ligands.