The Table of Nuclides (or Chart of Nuclides) is a two-dimensional graph in which one axis represents the number of neutrons and the other represents the number of protons in an atomic nucleus.
Each point plotted on the graph thus represents the nuclide of a real or hypothetical chemical element. This system of ordering nuclides can offer a greater insight into the characteristics of isotopes than the better-known periodic table, which shows only elements instead of each of their isotopes (Isotopes are nuclides with the same number of protons but differing numbers of neutrons).
The line of black points in the middle represents stable elements. The nuclides in the colored areas above or below this line decay by neutron or proton emission. This happens in everything between 700 million years to instantaneously depending on the nuclides characteristics.
I have plotted the line of stable elements into the music software MetaSynth beginning with the most simple and lightweight element of Hydrogen, 1H, in the upper frequency register. Then we climb through the nuclides all the way down to the most heavy elements represented by lower frequencies.
This is how it sounds:
..and this is a spectral version: