Among the inner transition metals, Actinoids possess a significantly greater tendency to form comple — d and f Block Elements Chemistry Question

💡 Solution & Explanation

The higher charge density (due to the more severe actinide contraction) makes them stronger Lewis acids. Additionally, the $5f$ orbitals in actinoids are less buried than the $4f$ orbitals in lanthanoids, allowing for much more effective spatial overlap and interaction with ligand lone pairs.