What is radon-222?

Answer 1

Radon-222 is one of the isotopes or the inert gas radon. It is the longest-lived occurring one, and it appears as a daughter of the radioactive decay of radium (226Ra). It is radioactive (as are all of radon's isotopes), and, as such presents a hazard to people. The 222Ra isotope undergoes alpha decay to become polonium-218 (218Po). It is uranium that is the culprit as regards the source of radon. Uranium is the source of radium, and from radium we see radon. Uranium is present in the ground in a number of types of rock, so radon could appear in soil samples, in ground water, or in the lower internal spaces in buildings (because is seeps in). Radon is considered to be the second leading cause of lung cancer, and is an underrated threat. Testing for radon in structures is a bit tedious, but it can be done. If there is a question about a radon threat to your home, testing is not outrageously expensive. Call your county health office and get a "threat assessment" for your area. Just remember that though your neighbor's house might be well under recommended limits, yours may not, as there are variables to consider. Use the link below for more information.