Answer:
Force, [tex]F=8.23\times 10^{-8}\ N[/tex]
Explanation:
It is given that,
Each ion in Na⁺ and Cl⁻ has a charge of, [tex]q=1.6\times 10^{-19}\ C[/tex]
Distance between two ions, [tex]d=5.29\times 10^{-11}\ m[/tex]
We need to find the electrostatic force. It is given by :
[tex]F=k\dfrac{q_1q_2}{d^2}[/tex]
[tex]F=9\times 10^9\times \dfrac{(1.6\times 10^{-19})^2}{(5.29\times 10^{-11})^2}[/tex]
[tex]F=8.23\times 10^{-8}\ N[/tex]
So, the magnitude of electrostatic force between them is [tex]F=8.23\times 10^{-8}\ N[/tex]. Hence, this is the required solution.