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Chemistry
Lanthanoid contraction is due to increase in
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Q. Lanthanoid contraction is due to increase in
The d-and f-Block Elements
A
atomic number
26%
B
effective nuclear charge
60%
C
atomic radius
12%
D
valence electrons
3%
Solution:
Lanthanoid contraction is due to increase in effective nuclear charge due to poor shielding effect of $4 f$.