Chemistry - PERIODIC TABLE Question with Solution | TestHub

Atomic radius decreases on going from left to right in a period. Thus size of$\mathrm{O}>\mathrm{F}$and size of anion is larger then their atoms. As${\mathrm{O}}^{2-}$and${\mathrm{F}}^{-}$are isoelectronic, therefore, size of${\mathrm{O}}^{2-}>{\mathrm{F}}^{-}.$