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Grade: 12
        

Why do lanthanides have less tendency to form complexes and are less basic when compared to actinoid elements?

10 years ago

Answers : (2)

SAGAR SINGH - IIT DELHI
879 Points
							

Dear shailja,

They do not form Ln=O or Ln≡N multiple bonds of the type known for many transition
metals and certain actinides.Unlike the actinides, they do not form stable carbonyls and have (virtually) no chemistry in the 0 oxidation state.The 4f orbitals in the Ln3+ ion do not participate directly in bonding, being well shielded by the 5s2 and 5p6 orbitals. Their spectroscopic and magnetic properties are thus largely uninfluenced by the ligand.

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Sagar Singh

B.Tech IIT Delhi

9 years ago
Deepak lambora
13 Points
							Because ions of actinides are highly charge and are of Small size so actinides form more comples...than lanthanidesOrder of complex tendency of actinides An+4 >ano4+2>an+3>ano2+And complexes tendency of lanthanides areLn2+
						
one year ago
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