A) Greater shielding of 5d electrons by 4/electrons.
B) Poorer shielding of 5d electrons by 4/electrons.
C) Effective shielding of one of 4/electrons by another in the subshell.
D) Poor shielding of one of 4/electron by another in the subshell.
Correct Answer: B
Solution :
In lanthanides, there is poorer shielding of 5d electrons by 4f electrons resulting in greater attraction of the nucleus over 5d electrons and contraction of the atomic radii.You need to login to perform this action.
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