Q.

Statement(SI): Actinoid contraction is greater from element to element than Lanthanoid contraction.
Statement(SII): 5f orbitals have poor shielding effect than 4f orbitals.

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a

Both SI and SII are false  

b

SI is true and SII is false   

c

SI is false and SII is true

d

Both SI and SII are true

answer is D.

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Detailed Solution

Both are correct.

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Statement(SI): Actinoid contraction is greater from element to element than Lanthanoid contraction.Statement(SII): 5f orbitals have poor shielding effect than 4f orbitals.