The crystal field stabilization energy (CFSE) of F e H 2 O 6 C l 2 and K 2 N i C l 4 , respectively, are:

The crystal field stabilization energy (CFSE) of FeH2O6Cl2 and K2NiCl4, respectively, are:
  1. -0.4∆0  and -1.2∆t
  2. -2.4∆0 and -1.2∆t
  3. -0.4∆0 and -0.8∆t
  4. -0.6∆0 and -0.8∆t

Solution

FeH2O62+;Fe+2⇒3d6,  Since H2O is

Weak field ligands,
  
CFSE =4×-0.4+0.6×2=-0.4∆0
 CFSE =4×0.4+-0.6×4=-0.8∆0 and -0.8∆t

Asked in: JEE Main 2019 (10 Apr Shift 2)

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