Which one of the following has largest ionic radius? | Chemistry | SolveeIt

Question

Which one of the following has largest ionic radius?

$Li ^+$

$O^{2-}_2$

$B^{3+}$

$F^-$

Answer

$O^{2-}_2$

Explanation

Solution

$O_2^{2-}$ has largest ionic radius, because it has a larger negative charge than the other ions, leading to greater electron-electron repulsion, which causes the electron cloud to expand, resulting in a larger ionic radius.

So, the correct option is (B): $O_2^{2-}$

Chemistry Question on Classification of elements & periodicity in properties

Solution