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  3. Chemistry
  4. The radii of the F, F-, O and O2- are in the order

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Q. The radii of the F, $F^-$, O and $O^{2-}$ are in the order

EAMCETEAMCET 1998Classification of Elements and Periodicity in Properties

Solution:

Radii are in the following order
$O^{2-} > F^- > O > F \rightarrow$
$O^{2-}$ and $F^-$ are isoelectronic and 0, F belong to the same period.