Question: The effect of lanthanoid contraction in the lanthanoid series of elements by and large means:
increase in both atomic and ionic radii
decrease in atomic radii and increase in ionic radii
decrease in both atomic and ionic radii
increase in atomic radii and decrease in ionic radii
Correct Option: , 2
Solution:
Due to lanthanoid contraction, size of atom as well as ion of lanthanoid decreases.
