The crystal field splitting energy of 
complex is ' 
times that of the 
complex. Here ' n ' is 
. (Assume 
)
Text Solution
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The Crystal Field Stabilization Energy (CFSE) is calculated based on the electronic configuration of the central metal ion in the octahedral field.
For 
:
Cobalt is in +3 oxidation state. 
has a 
configuration.
Given 
, it is a low spin complex. The electrons fill the 
level first.
Configuration: 
.
CFSE for 
.
For 
:
Chromium is in +3 oxidation state. 
has a 
configuration.
Configuration: 
.
CFSE for 
.
Comparing the magnitudes of the stabilization energies:
Magnitude of CFSE for 
.
Magnitude of CFSE for 
.
The ratio 
.
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