The CFSE of [CoCl6] 3- is 18000 cm-1 the CFSE for [CoCl4] – will be:

These are the options for the question :The CFSE of [CoCl6] 3- is 18000 cm-1 the CFSE for [CoCl4] – will be:

a. 18000 cm-1
b. 8000cm-1
c. 2000 cm-1
d. 16000 cm-1

The correct answer is – b. 8000 cm-1 ,∆t =(4/9 ) x 18000cm-1 =8000 cm-1