Which of the following factors may be regarded as the main cause the lanthanide contraction ?A. Poor shielding of one of 4f electron by another in the subshellB. Effective shielding of one of 4f electrons by another in the subshellC. Poorer shielding of 5d electrons by 4f electronsD. Greater shielding of 5d electrons by 4f electrons

Which of the following factors may be regarded as the main cause the l

1.	Which of the following factors may be regarded as the main cause the lanthanide contraction ?A. Poor shielding of one of 4f electron by another in the subshellB. Effective shielding of one of 4f electrons by another in the subshellC. Poorer shielding of 5d electrons by 4f electronsD. Greater shielding of 5d electrons by 4f electrons
Answer» Correct Answer - C [Poorer shielding of 5d electrons by 4f electron]

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