The sound produced by splitting an atom in half, specifically in the context of nuclear fission, is virtually silent. This is because the splitting of an atom occurs at the atomic nucleus, which is a microscopic scale, and does not produce sound waves in the audible frequency range.
Nuclear fission is a highly energetic process in which the nucleus of an atom is split into two smaller nuclei, releasing a significant amount of energy in the form of gamma radiation and kinetic energy. While the release of energy can have profound effects, such as generating heat or powering nuclear reactors, it does not produce sound waves that can be heard by the human ear.
It's important to note that sound waves require a medium, such as air or water, to propagate and reach our ears. Since nuclear fission occurs in the atomic nucleus, which is surrounded by the electron cloud and not a medium like air, no sound is generated as a direct result of the splitting of an atom.