Question

Two positive ions, each carrying a charge q, are separated by a distance d, repulsion between the ions, the number of electrons missing from each ion will be:

Answer 1

According to Coulomb's law,
$F=\frac{1}{4\pi {ϵ}_0}\frac{\left(q\right)\left(q\right)}{d^2}\Rightarrow F=\frac{q^2}{4\pi {ϵ}_0{d}^2}{q}^2=4\pi {ϵ}_{0}F{d}^2\Rightarrow q=\sqrt{4\pi {ϵ}_{0}F{d}^2}Sinceq=ne\therefore n=\frac{q}{e}\Rightarrow n=\frac{\sqrt{4\pi {ϵ}_{0}F{d}^2}}{e}=\sqrt{\frac{4\pi {ϵ}_{0}F{d}^2}{e^2}}$