Solve the following problems given below:
Problem I: Calculate the electric potential due to the nuclei at a point in a Na+Cl- ion pair located on a line half way between the nuclei (the inter nuclear separation is 283 pm) as the point approaches from infinity and ends at the mid-point between the nuclei.
Problem II: What is the electric potential due to the nuclei at a point that is at the mid-point between the nuclei?
Please show your results in detailed calculations.