1. The problem statement, all variables and given/known data During a chem lesson my professor was demonstrating Coulomb's law using HCl. Fe = kq1q2/r^2 so what he did was he replaced q1 and q2 with 0.17 and -0.17. Then he showed an example with LiF and then replaced q1 and a2 with 1 and -1. I think he was trying to show us how strong ionic bonds were. Can someone please explain why and how the numbers 0.17 and -0.17 were chosen for HCl and 1 and -1 were chosen for LiF?