
Radon - Wikipedia
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.
Radon - US EPA
Mar 3, 2025 · Radon is a naturally occurring radioactive gas that can cause lung cancer. You can’t see or smell radon. Testing is the only way to know your level of exposure. Radon can have a big impact on your health and indoor air quality. All homes should be tested for radon. Learn how you can reduce your risk and exposure to radon.
Radon | National Institute of Environmental Health Sciences
Jun 4, 2024 · Radon is a naturally occurring radioactive gas that is colorless and odorless. Radon comes from the natural decay of uranium or thorium, elements found in rocks, soils, and water. Radon breaks down quickly, giving off radioactive particles. When inhaled, these radioactive particles can damage cells that line the lung.
Radionuclide Basics: Radon | US EPA
Feb 6, 2025 · Radon (chemical symbol Rn) is an odorless, colorless, radioactive gas. It comes from the natural decay of uranium and radium found in nearly all rocks and soils. Radon can …
What is radon? | U.S. Geological Survey - USGS.gov
Radon is a naturally occurring gas produced by the radioactive decay of the element radium. Radon itself is radioactive and it decays to form the element polonium. Polonium is also radioactive and it is this element, which is produced by radon in the air and in people's lungs, that can hurt lung tissue and cause lung cancer.
Radon is a naturally occurring radioactive gas without color, odor, or taste that undergoes radioactive decay and emits ionizing radiation. Radon comes from the natural (radioactive) breakdown of uranium and thorium in soil, rock, and groundwater and is found all over the U.S.
Ραδόνιο - Βικιπαίδεια
Το χημικό στοιχείο Ραδόνιο (σύμβολο: Rn) είναι ένα ευγενές αέριο με ατομικό αριθμό 86 και ατομικό βάρος (222) . Έχει θερμοκρασία τήξης -71 C° και θερμοκρασία βρασμού -61,8 C°. Είναι ραδιενεργό και ένα από τα βαρύτερα αέρια. Το πιο σταθερό του ισότοπο είναι το ραδόνιο-222 με χρόνο ημιζωής 3,8 ημέρες.
Rádon – Wikipédia, a enciclopédia livre
O elemento rádon/radão/radónio (português europeu) ou radônio (português brasileiro) (do latim radonium - derivado do rádio) é um elemento químico com o símbolo Rn. Foi descoberto por Robert Bowie Owens [1] e Ernest Rutherford em 1899.
Radônio: propriedades, características, precauções
O radônio, de número atômico 86, é um gás nobre pertencente ao sexto período da Tabela Periódica. Com uma densidade nove vezes maior que a do ar, trata-se do gás mais denso de …
Radônio: o que é e onde está presente? - eCycle
Radônio é o nome dado a um gás invisível, inodoro, insípido e mortal pertencente à família VIII da Tabela Periódica. De modo geral, ele é formado a partir do decaimento do Urânio e do …
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