3 public questions tagged with this topic.
From the spectrochemical series (Cl− < H₂O < NH₃ < CN−), CN− is the strongest field ligand, causing the largest Δo.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Crystal Field Theory - CFT and Crystal Field Splitting and CFSE
Δo depends on ligand strength (spectrochemical series: CN− > NH₃ > H₂O > F−). [Co(CN)6]3− with strong field CN− has the highest Δo.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Crystal Field Theory - CFT and Crystal Field Splitting and CFSE
[Mn(H₂O)6]2+ (Mn₂+, d5) with weak field H₂O is high spin (t2g3 eg2), 5 unpaired electrons, the maximum among options.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Crystal Field Theory - CFT and Crystal Field Splitting and CFSE
