Question

The CFSE for octahedral [CoCl₆]⁻⁴ is 18,000 cm⁻¹. What will be the CFSE for tetrahedral [CoCl₃]⁻²?

Answer 1

CFSE for tetrahedral complex = `4/9` CFSE of octahedral complex

= `4/9 xx 18,000`

= 8000 cm⁻¹