Search results
Radon is a chemical element; it has symbol Rn and atomic number 86. It is a radioactive noble gas and is colorless and odorless. Of the three naturally occurring radon isotopes, only 222 Rn has a sufficiently long half-life (3.825 days) for it to be released from the soil and rock where it is generated.
Radon decays into radioactive polonium and alpha particles. This emitted radiation made radon useful in cancer therapy. Radon was used in some hospitals to treat tumours by sealing the gas in minute tubes, and implanting these into the tumour, treating the disease in situ. Other, safer treatments are now more commonly used.
27 wrz 2024 · Radon, chemical element, a heavy radioactive gas of Group 18 (noble gases) of the periodic table, generated by the radioactive decay of radium. It is a colorless gas, 7.5 times heavier than air and more than 100 times heavier than hydrogen. Learn more about radon in this article.
The two following tables list the most important data and properties of the Radon isotopes. Further information on the individual Radon isotopes is listed on separate pages and can be accessed via the link in column 1. Atomic Properties. Radioactive Decay Properties. Notes (related to the columns): 1 - name of the nuclide, isotope.
Radon is a contaminant that affects indoor air quality worldwide. According to the United States Environmental Protection Agency (EPA), radon is the second most frequent cause of lung cancer, after cigarette smoking, causing 21,000 lung cancer deaths per year in the United States.
INTRODUCTION. Radon is a natural radioactive gas discovered in the 1900 by Dorn, who called it Radium emanation. Since 1923, it has been called radon. The atomic number of radon is 86, and the atomic weight is 222 [1]. Radon is a naturally occurring, colourless, odourless gas that is soluble in water.
Radon has been used in implantable seeds, made of gold or glass, primarily used to treat cancers. Radon - Properties, history, name origin, facts, applications, isotopes, electronic configuation, crystal structure, hazards and more; Interactive periodic table of the chemical elements.
