What process leads to the formation of radon?

The formation of radon is primarily the result of the decay of Uranium-238. As Uranium-238 undergoes radioactive decay, it goes through a series of transformations, ultimately producing radon as one of its decay products. Specifically, when Uranium-238 decays, it first transforms into a series of intermediate isotopes before eventually producing radon-222, a gas that can accumulate in enclosed spaces such as basements and homes.

Understanding this process is crucial for radon measurement technicians, as it highlights the source of radon in various geological formations and informs strategies for radon testing and mitigation in residential and commercial buildings.