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

Options

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

Answer

A

Explanation

`O^(-2)` has the highest value of ionic radii as this can be explained on the basis of `Z//e{("Nucleus charge")/("No. of electron")}`
Whereas `Z//e` ratio increases, the size decreases and when `Z//e` ratio decreases the size increases.