Chemistry · Actinoids: Electronic configuration and oxidation states
Actinides have higher tendency to form complexes than Lanthanides, due to
Actinides have higher tendency to form complexes than Lanthanides, due to
- A. Higher charge and smaller size
- B. Smaller charge and larger size
- C. They are radioactive
- D. They are electropositive
Step-by-step solution
Actinides exhibit higher oxidation states (e.g., +4, +5, +6) compared to lanthanides (mostly +3), leading to higher charge on the metal ion. Additionally, the poor shielding of 5f electrons results in smaller effective ionic radii for these high oxidation states. The combination of higher charge and smaller size increases the charge density and polarizing power of actinides, enhancing their ability to form complexes with ligands.