Manipal MET2015ChemistryCoordination Compounds
In which of the following complex ion, the central matal ion is in a state of s p^3 d^2 hybridisation?
Options
- A[ CoF ₆ ]³⁻
- B[ Co ( NH ₃ )₆ ]³⁺
- C[ Fe ( CN )₆ ]³⁻
- D[ Cr ( NH ₃ )₆ ]³⁺
Correct answer
A. [ CoF ₆ ]³⁻
Step-by-step solution
[ Co F ₆ ]³⁻ ion F ⁻ is a weak ligand. It cannot pair up d -electrons and forms outer orbital octahedral complex. NH ₃ and CN ⁻ are strong ligands. So, they pair up d -electrons and form their inner orbital complex.