Radon, radioactive

CAS RN: 10043-92-2

Soil Adsorption / Mobility

Radon is strongly adsorbed on various surfaces(1). The decay products of radon-222 and radon-220 are electrically charged when formed and, therefore, tend to attach themselves to dusts that are normally present in the atmosphere(2,3). If the radioactive gases coexist with the dust in the same air mass for a sufficiently long time, the parents and their various decay products will achieve radioactive equilibrium. The growth of radon-222 decay products approaches equilibrium in about 2 hours(3).
Find more information on this substance at: PubChem, PubMed