I got some questions about radioactive decay: Do all atoms decay radioactive particles, only in a higher or lesser degree? I heard that atoms that have more protons (higher in the periodic system) than led, emit radioactive decay, and then stop at led. Does that mean that led does not emit radioactive decay? It would only make sense... Since there is matter that emit readioactive decay less than red, such as Radon. Ok, assuming that, will a hydrogen atom with one proton and one electron ever decay? If so, in what way excactly? It can't emit a heliumcore, since it doesn't have that, and it can't emit an electron, since it have no neutron. How will it decay? What in a material decides what form the radioactive decay will be? Either beta or alpha emission. And lastly, what happens to an atom after it decays? After an alpha decay, will it become an ion with [tex]e^-2[/tex] with two extra electrons. Or will these electrons just "fall" of the atom. Same for the beta decay, will it become a ion with [tex]e^+[/tex] ? I wonder what happens with the atom when it reestabilixe itself.