Hello, I have a question about the charge, q, that appears in, say, Coulomb's Law, Lorenz Force, etc. Can you use the charge associated with various ions? Say I wanted to find the force on aluminum by fluoride (I don't know why, those are just the first two off the top of my head). Aluminum has a charge of 3+ and fluoride has a charge 1-, and separated by some distance r. Am I right in my thinking? And can the same be true with other equations dealing with electricity and magnetism?