Lanthanoid contraction is caused due to:A. The imperfect shielding on outer electrons by 4f -electrons from the nuclear chargeB. The aapreciable shielding on outer electrons by 4f-electrons from the nuclear chargeC. The aapreciable shielding on outer electrons by 5d-electrons from the nuclear chargeD. The same effective nuclear charge from Ce to Lu

Lanthanoid contraction is caused due to:A. The imperfect shielding on

1.	Lanthanoid contraction is caused due to:A. The imperfect shielding on outer electrons by 4f -electrons from the nuclear chargeB. The aapreciable shielding on outer electrons by 4f-electrons from the nuclear chargeC. The aapreciable shielding on outer electrons by 5d-electrons from the nuclear chargeD. The same effective nuclear charge from Ce to Lu
Answer» Correct Answer - A It is the reason for given factor.

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