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Coulomb's law is the most fundamental in electrostatics. This law determines the force one charged particle exerts over the other and vice versa. The physical expression of this law is:

$\mathbf{F}\mathbf{=}\frac{\mathbf{1}}{\mathbf{4}{\mathbf{Ï€Î\mu }}_{\mathbf{0}}}\frac{{\mathbf{q}}_{\mathbf{1}}{\mathbf{q}}_{\mathbf{2}}}{{\mathbf{r}}^{\mathbf{2}}}$

Here, r is the distance between two charged particles, and q is the charges.

As it is known that the charge of the electron is${\mathrm{q}}_1=-1.6×{10}^{-19}\mathrm{C}$

It is also known the charge of the proton isdata-custom-editor="chemistry" ${\mathrm{q}}_2=+1.6×{10}^{-19}\mathrm{C}$

It is given that the separation between the electron and proton is data-custom-editor="chemistry" $\mathrm{r}=1×{10}^{-10}\mathrm{m}$.

It is known that the force can be determined as:

data-custom-editor="chemistry" $\begin{array}{rcl}\left|\mathrm{F}\right|& =& \left|\frac{1}{4{\mathrm{Ï€Î\mu }}_0}\frac{{\mathrm{q}}_1{\mathrm{q}}_2}{{\mathrm{r}}^2}\right|\\ & =& 9×{10}^9×\frac{{\left(1.6×{10}^{-19}\right)}^2}{{\left(1×{10}^{-10}\right)}^2}\\ & =& 2.304×{10}^{-8}\mathrm{N}\end{array}$

As it is known that the charge of the electron is${\mathrm{q}}_1=-1.6×{10}^{-19}\mathrm{C}$

It is also known the charge of the proton is${\mathrm{q}}_2=+1.6×{10}^{-19}\mathrm{C}$

It is given that the separation between the electron and proton is$\mathrm{r}=1×{10}^{-10}\mathrm{m}$

It is known that the force can be determined as:

$\begin{array}{rcl}\left|\mathrm{F}\right|& =& \left|\frac{1}{4{\mathrm{Ï€Î\mu }}_0}\frac{{\mathrm{q}}_1{\mathrm{q}}_2}{{\mathrm{r}}^2}\right|\\ & =& 9×{10}^9×\frac{{\left(1.6×{10}^{-19}\right)}^2}{{\left(1×{10}^{-10}\right)}^2}\\ & =& 2.304×{10}^{-8}\mathrm{N}\end{array}$