Very interesting, i think you could make a puzzle game using this mechanic, im pretty sure it's gonna be satisfying to watch. i love that the electron shoot by other atom also could shoot other atom.
i think my only complain is that there's no restart button and for some reason the game mechanic kinda broken after a while, my electron started to bounce around, even the other electron didn't register collision at all. but maybe it's not your fault and im playing on a potato powered toaster rn so prob not the most ideal device to play a game. and maybe you could also do something to prevent spam shoot.
btw my highscore is 107