Which one of the following is main cause of lanthanoid contraction? – InterviewSolution

1.	Which one of the following is main cause of lanthanoid contraction?
Answer» Poor SHIELDING effect of 5F SUB shell more shielding effect of 4f sub shell Poor shielding effect of 4f sub shell more shielding effect of 4f sub shell Solution :Poor shielding effect of 4f sub shell

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