MHT CET Chemistry question

Chemistry The d and f-Block Elements MHT CET

Which of the following pairs have same radii? I. Am and Cm II. U and Np III. Bk and Cf IV. Pu and Th The correct set of choices is

(A)I and II
(B)II and III
(C)II and IVCorrect
(D)I and III

Answer: (C)

Solution

Actinoids show a gradual actinoid contraction, so only the pairs U and Np and Pu and Th are taken

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Question ID VK-074888