The main cause of lanthanide contraction is due to
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
Answer:
A. Poor shielding of one of 4f electron by another in the subshell
The main cause of lanthanide contraction is due to
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