NEET UG 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)

View answer and explanation

Correct option: C

\mathrm{Sn} > Ce > Yb > Lu

Option C (

\mathrm{Sn} > Ce > Yb > Lu

) is correct because ionic size decreases across the lanthanide series due to lanthanide contraction, and Sn is not a lanthanide.

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