Which one of the following ions has the highest value of ionic radius?

Options

A. `Li^(+)`
B. `B^(3+)`
C. `O^(2-)`
D. `F^-`

Answer

C

Explanation

`O^(2-)` has the highest value of ionic radius as this can be explained on the basis of `z//e=[("nuclear charge")/("no . of electrons")]` when z/e ratio no. of electrons increases, the size decreases and when z/e ratio decreases, the size increases