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

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in Transition and Inner Transition Elements by (34.6k points)

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

(a) Poor shielding effect of 5f sub-shell 

(b) More shielding effect of 4f sub-shell 

(c) Poor shielding effect of 4f sub-shell 

(d) More shielding effect of 5f sub-shel

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1 Answer

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by (47.6k points)

(c) Poor shielding effect of 4f sub-shell

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