Question:
The chemistry of the actinoids is more complex as compared to the lanthanoids. Why?
The chemistry of the actinoids is more complex as compared to the lanthanoids. Why?
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Actinoid contraction is more irregular; variable oxidation states and stronger 5f participation lead to complex behavior.
Updated On: Jul 8, 2025
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Solution and Explanation
Step 1: In actinoids, 5f orbitals participate in bonding, while in lanthanoids, 4f orbitals are deeply buried and less involved.
Step 2: Actinoids show variable oxidation states ranging from +3 to +6 (sometimes +7), whereas lanthanoids predominantly show +3 oxidation state.
Step 3: The 5f electrons in actinoids are more shielded and more easily influenced by ligands.
Step 2: Actinoids show variable oxidation states ranging from +3 to +6 (sometimes +7), whereas lanthanoids predominantly show +3 oxidation state.
Step 3: The 5f electrons in actinoids are more shielded and more easily influenced by ligands.
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