Identify the geometry of a complex compound [ CoF ₆]⁻³ .

Step-by-step solution

The given complex is [ CoF ₆]³⁻ . The central metal atom is Cobalt (Co). Let its oxidation state be x . x + 6(-1) = -3 x = +3 The electronic configuration of Co is [ Ar ] 3d^7 4s^2 . The electronic configuration of Co ³⁺ is [ Ar ] 3d^6 . Since F ^- is a weak field ligand, it does not cause pairing of electrons in the 3d orbitals. The complex undergoes sp^3d^2 hybridization to accommodate six F ^- ligands. For a coordination number of 6, the geometry of the complex is octahedral. Answer: Octahedral