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  • With respect to size of the radii of  and which one is correct option:<

With respect to size of the radii of F,F^{-},O and O^{2-} which one is correct option:

Option: 1

O^{2-} > O > F^{-}> F


Option: 2

F^{-}> O^{2-}> F> O


Option: 3

O^{2-}> F^{^{-}}> O> F


Option: 4

O^{2-} > F^{-} > F > O


Answers (1)

best_answer

Left to right size decreases due to increase in effective nuclear charge (Zeff). Hence,
atomic size of Oxygen atom is more than Fluorine atom. 

However, O^{2-} ion has more charge than F^{-}ion. Hence, F^{2-}is larger than F^{-}. Size of anion is always more than neutral charges.

O^{^{2-}}> F^{-}> O> F

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