2. Thoron is an alpha-emitter with a half-life of 3.8232 days. Radon is radioactive and decays into other radioactive and toxic elements. Vahab Amiri, Mohammad Nakhaei, Razyeh Lak, Using radon-222 and radium-226 isotopes to deduce the functioning of a coastal aquifer adjacent to a hypersaline lake in NW Iran, Journal of Asian Earth Sciences, 10.1016/j.jseaes.2017.07.015, 147, (128-147), (2017). There are 33 known isotopes of radon. In 1900, Rutherford devoted himself to investigating the new gas and showed that it was possible to condense it to a liquid. Periodic Table--Radon. 14859-67-7. If you have a sample with lots of thorium but almost no uranium, you will have more thoron (220 Rn) than radon (222 Rn). The half life of a radioactive element or isotope is the time it takes for half of a sample of the element or isotope to break down. None of the isotopes of radon are stable. Radon-222 is a radioactive daughter isotope of Radium-226, which decays into Polonium-218 and then into other heavy-metal isotopes. Radon gas can collect in buildings, creating a health risk. This is not to be confused with the relative percentage isotope abundances which totals 100% for all the naturally occurring isotopes. Radon-222 is the most common. Isotopes of Radon. The neutron has not isotopes, it is a fundamental nuclear particle. RADON-222. Create: 2005-08-08. Radon occurs in nature as the decay product of uranium, radium, thorium, and other radioactive elements. The isotope radon-222 is the most stable isotope and called thoron and emanates naturally from thorium. Radon RN-222. It is estimated that every square mile of soil to a depth of 6 inches contains about 1 g of radium, which releases radon in tiny amounts into the atmosphere. Three of the 37 known isotopes occur naturally - Rn-219, Rn-220 and Rn-222. Next Element (Francium) The Table of Elements. Previous Element (Astatine) The Periodic Table of Elements. Radiation Dosimetry Small amounts of radon are sometimes used by hospitals to treat some forms of cancer.

In the above, the most intense ion is set to 100% since this corresponds best to the output from a mass spectrometer. Radon is produced by the decay of naturally occurring uranium or thorium in soil and water.

1. There are thirty four known isotopes of Radon (Rn).The most stable isotope is 222 Rn, which is a decay product (daughter product) of 226 Ra, has a half-life of 3.823 days and emits alpha particles. Radon can move up from the ground into buildings through openings in floors or walls that are in contact with the ground.

There are 37 known isotopes of radon (86 Rn), from 195 Rn to 231 Rn; all are radioactive.

220 Rn is a natural decay product of thorium and is called “thoron.” It has a half-life of 55.6 seconds and also emits alpha radiation. Radon is a naturally occurring radioactive gas that is odorless and tasteless. The three most abundant isotopes of radon that occur naturally are radon-219, radon-220, and radon-222. The radon-220 isotope, commonly referred to as thoron, is a natural decay product of thorium-232.

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