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Radon is a colorless, odorless, and tasteless [15] gas and therefore is not detectable by human senses alone. At standard temperature and pressure , it forms a monatomic gas with a density of 9.73 kg/m 3 , about 8 times the density of the Earth's atmosphere at sea level, 1.217 kg/m 3 . [ 16 ]
There are 39 known isotopes of radon (86 Rn), from 193 Rn to 231 Rn; all are radioactive.The most stable isotope is 222 Rn with a half-life of 3.8235 days, which decays into 218 Po
Radon is available only in very small quantities, and due to its short half-life, is generally produced by a radium-226 source in secular equilibrium. [22] Oganesson is almost impossible to produce and with a very short half life, it is generally not readily available for purchase.
Spectral lines of radon: Other properties; Natural occurrence: from decay: Crystal structure ... E172 would be the end of period 8 ("noble gas") and E173 would be the ...
The following table lists the Van der Waals constants (from the Van der Waals equation) for a number of common gases and volatile liquids. [ 1 ] To convert from L 2 b a r / m o l 2 {\displaystyle \mathrm {L^{2}bar/mol^{2}} } to L 2 k P a / m o l 2 {\displaystyle \mathrm {L^{2}kPa/mol^{2}} } , multiply by 100.
Radon gas in the natural gas streams concentrate as NORM in gas processing activities. Radon decays to lead-210, then to bismuth-210, polonium-210 and stabilizes with lead-206. Radon decay elements occur as a shiny film on the inner surface of inlet lines, treating units, pumps and valves associated with propylene, ethane and propane processing ...
Whereas WF 6 gas is one of the densest gases, with the density exceeding that of the heaviest elemental gas radon (9.73 g/L), the density of WF 6 in the liquid and solid state is rather moderate. [8] The vapor pressure of WF 6 between −70 and 17 °C can be described by the equation log 10 P = 4.55569 − 1021.208 / T + 208.45 ,
The general effects of radon to the human body are caused by its radioactivity and consequent risk of radiation-induced cancer. Lung cancer is the only observed consequence of high concentration radon exposures; both human and animal studies indicate that the lung and respiratory system are the primary targets of radon daughter-induced toxicity ...