JEE Main202524 Jan 2025Evening ShiftChemistryCoordination CompoundsActual
The conditions and consequence that favours the t_ 2 g ^3 e_g^1 configuration in a metal complex are
Options
- Aweak field ligand, low spin complex
- Bweak field ligand, high spin complex
- Cstrong field ligand, high spin complex
- Dstrong field ligand, low spin complex
Correct answer
B. weak field ligand, high spin complex
Step-by-step solution
The conditions and consequence that favour t_ 2 g ^3 e_g^1 configuration in a metal complex are (i) weak field ligand, and (ii) high spin complex For weak field ligands, splitting energy ( ₀ ) is lower than pairing energy (P) . As a result distribution of electrons for 3 ~d ^4 will be t_ 2 ~g ^3 e _ g ^1 . It results in high spin complex due to maximum number of unpaired electrons.