In which process there will be maximum increament in size

Options

A. `O(g)rarrO^(2-)(g)`
B. `Na(g)rarrNa^(+)(g)`
C. `Ca(g)rarrCa^(2+)(g)`
D. `F(g)rarrF^(-)(g)`

Answer

A

Explanation

`O(g)rarrO^(2-)(g), underset(therefore "size"uarr)underset("Zeff"darr)"as no. of electron"uarr`