JEE Main 2019 Chemistry question

Chemistry The d and f-Block Elements JEE Main 2019

The effect of lanthanoid contraction in the lanthanoid series of elements by and large means:

(A)increase in atomic radii and decrease in ionic radii
(B)increase in both atomic and ionic radii
(C)decrease in both atomic and ionic radiiCorrect
(D)decrease in atomic radii and increase in ionic radii

Answer: (C)

Solution

Both atomic and ionic radii decrease across the series.

Question ID VK-010702