The correct order of ionic radii of Y^ 3+ , La^ 3+ , Eu^ 3+ and Lu^ 3+ is

JEE Main Chemistry question

The correct order of ionic radii of and is

(A)
(B)
(C)
(D)Correct

Answer: (D)

Solution

Within the lanthanide series, ionic radius decreases steadily from La to Lu due to lanthanide contraction: . (lying directly above La in group 3, but above the whole lanthanide block) has a radius

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Question ID VK-147362