Radon (Rn), chemical element, a heavy radioactive gas of Group 18 (noble gases) of the periodic table, generated by the radioactive decay of radium. (Radon was originally called radium emanation.) Radon is a colourless gas, 7.5 times heavier than air and more than 100 times heavier than hydrogen.

It sometimes gets concentrated in homes built on soil with natural uranium deposits. It can enter buildings through cracks in floors or walls, construction joints, or gaps in foundations around pipes, wires or pumps. Radon levels are usually highest in the basement or crawl space.

Radon is produced from the natural radioactive decay of uranium, which is found in all rocks and soils. Radon can also be found in water. Radon escapes from the ground into the air, where it decays and produces further radioactive particles.

gas

If we breath in high levels of radon over long periods of time this exposure can lead to damage to the sensitive cells of our lungs which increases the risk of lung cancer. Radon causes about 1,000 lung cancer deaths in the UK every year.

Radon-222 | Rn – PubChem.

Noble gas

Radon is a chemical element with symbol Rn and atomic number 86. Classified as a noble gas, Radon is a gas at room temperature….Radon.

5 Important Facts About Radon

• #1: Radon is a Radioactive Gas.
• #2: Any Location Might Have Radon.
• #3: New Homes Aren’t Immune to Radon.
• #4: Radon Exposure Equals Radiation Exposure.
• #5: Mitigation is Often Possible.

Overall, radon is the second leading cause of lung cancer. Radon is responsible for about 21,000 lung cancer deaths every year. About 2,900 of these deaths occur among people who have never smoked.

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Levels of 4 pCi/L or higher are considered hazardous. Radon levels less than 4 pCi/L still pose a risk and in many cases can be reduced, although it is difficult to reduce levels below 2 pCi/L.

In high radon areas, if the average level is higher than 4-8 pCi/liter (NCRP recommended level is 8 pCi/liter; EPA recommended level is 4 pCi/liter), appropriate action is advised. However, no compelling evidence for increased cancer risks has yet been demonstrated from “acceptable” levels (< 4-8 pCi/liter).

The cost of a mitigation system may vary according to the home’s design, size, foundation, construction materials and the local climate. Radon reduction systems average costs nationally are $1,200 with a range from $800 to $1500 common depending on house and market conditions.

The test should be conducted in a room to be used regularly (such as a family room, living room, playroom, den, or bedroom); do not test in a kitchen, bathroom, laundry room or hallway. Usually the buyer decides where to locate the radon test, based on their expected use of the home.

Radon is the second leading cause of lung cancer after cigarette smoking. If you smoke and live in a home with high radon levels, you increase your risk of developing lung cancer.

about 1.3 pCi/L

Here are the 10 states with the highest Radon levels:

• Alaska (10.7)
• South Dakota (9.6)
• Pennsylvania (8.6)
• Ohio (7.8)
• Washington (7.5)
• Kentucky (7.4)
• Montana (7.4)
• Idaho (7.3)

Radon can enter your home through cracks and holes in the foundation, through well water, and via building materials, the Environmental Protection Agency (EPA) says. It’s common: About 1 in every 15 homes has what’s considered an elevated radon level.