# What takes up most the volume of an atom?

The electronic orbit, which surely must represent the volume of an atom, certainly so for the hydrogen ATOM, must surely represent the ATOMIC volume. The dwarfs the nuclear radius: i.e. radius of ""^1H atom $\cong$ $1 \times {10}^{-} 10 \cdot m$; the radius of the hydrogen NUCLEUS, $1 \times {10}^{-} 15 \cdot m$; that's 5 orders of magnitude. Of course, there are bigger nuclei than the hydrogen nucleus, but as far as we know, there are not more abundant nuclei than that of hydrogen.