According to the Environmental Protection Agency (EPA), radon is the No. It is a colorless gas, 7.5 times heavier than air and more than 100 times heavier than hydrogen. Testing. Indoor radon can be controlled and managed with proven, cost-effective techniques. Radon gas becomes trapped indoors after it enters buildings through cracks and other holes in the foundation. The diffusion length is defined as the characteristic distance traveled by the radon atoms during one half-life. Because it is considered to be a tasteless, odorless, and colorless gas, it is very hard to tell if radon is sitting next to you or not. Radon is the second leading cause of lung cancer in the United States. Bigu (1992) designed a fully automatic system for the unattended quantitation of radon-222 and radon-220 progeny. You can’t see or smell radon. Radon can have a … We provide innovative high-performance radon … Environmental science and regulation has come a long way, but there are improvements still needed and new frontiers still to open. We provide innovative high … Quiz questions will test your understanding of its characteristics as well as where it can be found. Radon ( / ˈ r eɪ d ɒ n / RAY-don) is a chemical element with the atomic number 86, and is represented by the symbol Rn.It is a radioactive, colorless, odorless, tasteless [1] noble gas, occurring naturally as the decay product of uranium or thorium.Its most stable isotope, 222 Rn, has a half-life of 3.8 days. Looking for online definition of Radon gas in the Medical Dictionary? Radon, chemical element, a heavy radioactive gas of Group 18 (noble gases) of the periodic table, generated by the radioactive decay of radium. Learn about the element radon and its nature with these assessments. I hope I've reassured you that in general you are safe with our environment and I hope I've helped you understand how we think about … Radon in the environment. It enters homes through cracks and opening in concrete slabs and pores in hollow concrete blocks. Radon is one of the densest substances that remains a gas under normal conditions. Radon Environmental is a building and environmental health sciences company focused on reducing public exposures to radon gas. ASTM E-2121 is a US standard for reducing radon in homes as far as practicable below 4 picocuries per liter (pCi/L) (148 Bq/m 3) in indoor air. About This Quiz & Worksheet. Radon is a colourless, odourless radioactive gas. Learn more about radon in this article. Testing is the only way to know your level of exposure. It is also used in geologic research and to track air masses. Outdoors, radon disperses rapidly and, generally, is not a health issue. Define radon. Radon. Start studying Environmental science chapter 12. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The instrument is a microprocessor-based system that consists of a sampling device, an electronic scaler, and a personal computer.

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