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MHT CET Chemistry question

ChemistryThe d and f-Block ElementsMHT CET

The radius of (atomic number of La = 57 ) is . Which one of the following given values will be closest to the radius of ? (Atomic number of Lu = 71 )

Answer: (D)

Solution

Because of lanthanoid contraction the ionic radius decreases from La to Lu, so the value must be smaller than 1.06 Å (the actual

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Question ID VK-074843