Isotopes of radon
= Isotopes of radon
{wiki=Isotopes_of_radon}
Radon is a radioactive noble gas with the symbol Rn and atomic number 86. It has several isotopes, with the most notable being: 1. **Radon-222 (²²²Rn)**: The most stable and abundant isotope, with a half-life of about 3.8 days. It is produced naturally from the decay of uranium-238 and is significant in environmental studies due to its presence in soil and groundwater.