Negative ions should be a kind of temporary substance form that exists widely. Can a hydrogen atom temporarily attract an additional electron to form a negative ion? Other elements or molecules can. I looked it up at Google. There are negative ions in the hydrogen discharge tube. Negative ions blur the function of electrostatic forces. How should rejection turn into attraction? Also, how long can a negative ion survive? Does the hydrogen atom absorb energy or emit energy when it becomes a negative ion?