JEE Main Chemistry Class 12 Co-ordination Compounds Part 1 Questions

E.C. of Cr3+(3d3): For complex A[Cr(H2O)2]3+ For complex B [Cr(NH3)6]3+ :Here, both the complexes (A) and (B) are paramagnetic with 3 unpaired electrons each. H2O is also a weak field ligand, which causes lesser splitting than NH3, which is comparatively stronger field ligand. Hence, the (∆0) value of (A) and (B) are calculated from the wavelengths of light absorbed and not from the wavelengths of light emitted.