no, it's not buyou cathk of it as a plus and a minus togetr, whh is wt? neutl. d what happens a negive ies out? what's this beco a pl. - a plus anthat's what happen th's what happens. one of these neutrons emits a beta particle, emits an electron, and becomes a proton. and this is the extra proton. see, you got the same number of nucleons. it's just that one of the neutral ones turned into a positive one. see that? so you're decaying up the table. and that element is what? 91? protactinium. protactinium. pa. not common, huh? these are natural transmutations. there are artificial transmutations, transmutations that are induced. and one of the first that we have recorded is that which a fellow by the name of ernest therford made in, i think, 1919. and all rutherford did was he-- what did he do? he had some nitrogen gas in a container and he put inside a piece of uranium--or was it radium? i don't know--that was emitting alpha particles. and then he found the nitrogen gas later on contained trace amounts of oxygen. and what was happening was the-- the alpha particl