KCET2022ChemistryCoordination Compounds
Crystal field splitting energy (CFSE) for [ CoCl ₆ ]⁴⁻ is 18000 ~cm ⁻¹ . The crystal field splitting energy (CFSE) for [ CoCl ₄ ]²⁻ will be
Options
- A16000 ~cm ⁻¹
- B8000 ~cm ⁻¹
- C10,000 ~cm ⁻¹
- D18000 ~cm ⁻¹
Correct answer
B. 8000 ~cm ⁻¹
Step-by-step solution
[ CoCl ₆ ]⁴⁻ is an octahedral complex, its CFSE value, ₀=18000 ~cm ⁻¹ [ CoCl ₄ ]²⁻ is a tetrahedral complex, _t= ? We know that, _t= 4 9 ₀= 4 9 18000=8000 ~cm ⁻¹