The Radii F, F–, O And O2– are In The Order Of

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Question

The radii F, F^–, O and O^2– are in the order of

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Solution

Correct option is

O^2– > F^– > O > F

Atomic radius decreases on going from left to right in a period. Thus, size of O > F. As O^2– and F^– are isoelectronic, therefore, size of O^2– > F^–.