Which of the following set of elements possess same radius?

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Fe, Co, Ni

Cr, Zn, Fe

V, Mn, Co

Fe, Co, Sc

answer is A.

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Detailed Solution

Atomic number of Fe is 26, Co is 27 and Ni is 28. Atomic radius of transition metals is nearly the same along the period and all the three metals (Fe, Co and Ni) are present next to each other. So, these metals shows the maximum similarity in terms of atomic radius.

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