Radon msds| properties| cas no| molecular formula | WorldOfChemicals

Radon Properties




Radon is a radioactive, colorless, odorless, tasteless noble gas, occurring naturally as the decay product of uranium. It is one of the densest substances that remains a gas under normal conditions and is considered to be a health hazard due to its radioactivity. It has been produced commercially for use in radiation therapy, but for the most part has been replaced by radionuclides made in accelerators and nuclear reactors. It has been used in implantable seeds, made of gold or glass, primarily used to treat cancers. Radon soil-concentration has been used in an experimental way to map buried close-subsurface geological faults because concentrations are generally higher over the faults. Similarly, it has found some limited use in prospecting for geothermal gradients. In the 1950s, radon has been used in industrial radiography.

Chemical Properties

Appearance Colorless Gas
Atomic Number 86
Atomic Weight 222 g/mol
Block p
Boiling Point −61.85 °C
CAS Number 10043-92-2
Crystal Structure Face-Centered Cubic
Density 9.73 g/ml
EINECS Number 233-146-0
Electron Configuration 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 4d10 5p6 4f145d10 6s2 6p6
Group 18
Ionization Energy 1037 KJ/mol
Melting Point −71.15 °C
Oxidation State 2
Period 6
Symbol Rn