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Q.

Statement I: In general, Actinoids form relatively less stable complexes as compared to Lanthanoids
Statement II: Actinoid contraction is greater from element to element than Lanthanoid contraction

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a

Both Statement I and Statement II are true, and Statement  II is the correct explanation of the Statement  I

b

Both Statement I and Statement II are true, but Statement  II is not the correct explanation of Statement I

c

Statement I is not true but Statement II is true

d

Both I and II are false

answer is C.

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Detailed Solution

Actinoid contraction is greater from element to element than Lanthanoid contraction due to poorer screening effect of 5f-orbitals than 4f- orbitals

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