Lanthanide contraction is due to...

Lanthanide contraction is due to ___

poor shielding of one of the 4f -eIectrons by another in the subshell

greater shielding of 5d electrons by 4f electrons

poorer shielding of 5d electrons by 4f electrons

effective shielding of one of the 4f electrons by another in the subshell

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