I'm extremely confused in regards to many aspects concerning polyatomic ions. For one, am I correct in thinking that covalent polyatomic ions gain charges by having components dissociated? Ex. A and B are sharing an electron, A has a significantly greater hold, B is dissociated by something leaving A with the electron and the compound now having a - charge? If my understanding of that is correct, here are some questions about polyatomic ion compounds: 1) Acids are covalent, right? Well how do they form, then? The polyatomic ion dissociates H+(s) from other compounds? 2) Well how does, say, Hydrobromic acid form? How can, in a covalent bond, an H+ and Br- come together? That seems ionic...they both dissociated from something else and happened to come together covalently but the electronegativity is even enough that the partial charge isn't significant so the + and - parts balance the charge? 3) Finally, how do ionic compounds with polyatomic ions work? If, say, Nitrate pulls off an electron from a group 1 element that element is now +1 and Nitratre is -2...how does that balance? So confused..thanks in advance for bearing with my questions. I'm undoubtedly missing something here.