rádon
Rádon is a chemical element with the symbol Rn and atomic number 86. It is a noble gas and is the only naturally occurring element that is radioactive. Rádon is colorless, odorless, and tasteless. It is formed from the radioactive decay of uranium, thorium, and actinium. These elements are found in small amounts in soil, rock, and water.
Rádon is a significant health concern because it can accumulate in buildings. When rádon decays, it produces
Testing for rádon is recommended for all homes, especially those in areas known to have higher rádon