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MHT CET Chemistry question

ChemistryThe d and f-Block ElementsMHT CET

Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii? (Numbers in the parenthesis are atomic numbers).

Answer: (C)

Solution

Lanthanoid contraction makes Hf (5d) almost equal in size to Zr (4d); Ti and Zr,

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Question ID VK-074835