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JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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Which is the correct order of ionic sizes?) At.no.∶Ce=58,Sn=50,Yb=70 and Lu=71)

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Correct option: C

\mathrm{Sn} > Ce > Yb > Lu

Option C (

\mathrm{Sn} > Ce > Yb > Lu

) is correct because ionic radii decrease with increasing effective nuclear charge, and Sn has the lowest charge among the given ions.

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