Depending how lay your audience is, this may or may not be too technicall. I would step down just a bit if your audience has not taken Chemistry AP or college level chemistry.
Deuterium isn't positively charged, deuterons are. And the strong force isn't restricted to neutrons.
Right, but Deuterium will be ionized...
Right, but why would it be any relavent at all to talk about it in any other sense? I'm sure I could tell them that it is the interaction between gluons and quarks and go into a whole spill about Quantum Chromodynamics..., but I do think that would be overkill for freshman intro chemistry non science majors.