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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
In a working mine, the radon level can be controlled by ventilation, sealing off old workings and controlling the water in the mine. The level in a mine can go up when a mine is abandoned; it can reach a level which can cause the skin to become red (a mild radiation burn). The radon levels in some of the mines can reach 400 to 700 kBq m −3. [17]
Mora said some areas in the country have naturally higher average radon rates than others, but since any home can be at risk, the only way to know is to do a test. Radon test kits can be purchased ...
Radon-222 (222 Rn, Rn-222, historically radium emanation or radon) is the most stable isotope of radon, with a half-life of approximately 3.8 days. It is transient in the decay chain of primordial uranium-238 and is the immediate decay product of radium-226 .
226 Ra is the most stable isotope of radium and is the last isotope in the (4 n + 2) decay chain of uranium-238 with a half-life of over a millennium; it makes up almost all of natural radium. Its immediate decay product is the dense radioactive noble gas radon (specifically the isotope 222 Rn ), which is responsible for much of the danger of ...
Long-term exposure to high radon levels can increase the risk of developing lung cancer. In fact, radon is the second leading cause of lung cancer in Idaho, according to the health department.
Average radiation doses received in Germany. Radon accounts for half of the background dose; and medical doses reach the same levels as background dose. The largest natural contributor to public radiation dose is radon, a naturally occurring, radioactive gas found in soil and rock, [65] which comprises approximately 55% of the annual background ...
The red color of the fire retardant is caused by the chemical component iron oxide, commonly known as rust. ... It is expected to naturally lose its color within months. How does fire retardant work?