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Which of the following factors may be re...

Which of the following factors may be regarded as the main cause of lanthanide contraction ?

A

Poor shielding of one of 4f electron by another in the subshell

B

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

C

Poorer shielding of 5d electrons by 4f electrons

D

Greater shielding of 5d electrons by 4f electrons

Text Solution

Verified by Experts

The correct Answer is:
A
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