[DOC] [TLE] Radon, Chemical Element - structure, water, uses, elements, gas ... [PAR] If a house or building has been built above soil containing uranium, radon may 
collect in the ... In 1900, German physicist Friedrich Ernst Dorn (1848-1916) 
found a third radioactive element. Dorn found this element because of an 
observation made by Curie. ... At first, Dorn called this radioactive gas radium "
emanation". [DOC] [TLE] Radon - Wikipedia [PAR] Radon is a chemical element with symbol Rn and atomic number 86. It is a 
radioactive, colorless, odorless, tasteless noble gas, occurring naturally as a 
decay product of radium. Its most stable isotope,Rn, has a half-life of 3.8 days. 
Radon is one of the densest substances that remains a gas under normal ... As 
radon itself decays, it produces other radioactive elements called radon... [DOC] [TLE] Listen to Radon Podcast - Royal Society of Chemistry [PAR] The first reports of problems associated with radon gas in domestic buildings was 
in ... where the level of radon gas in his basement was found to be abnormally 
high. ... The discovery of radon is credited to a German physicist Friedrich Ernst 
Dorn, ... which was given off by radium - a gas which he called 'radium emanation
'. [DOC] [TLE] ernest rutherford, the true discoverer of radon - School of Chemical ... [PAR] (3) Chlorine was discovered by Scheele, even though his ... [Ernst] Dorn, who 
called it radium emanation. ... explanation was first given in 1900 by Friedrich 
Dorn. ... certainly was by Rutherford and the Curies. ... tive emanation was a gas 
present in such minute quanti- ... The Macdonald Physics Building, where Ernest. [DOC] [TLE] rutherford and radon.pdf - Department of Chemistry - University of ... [PAR] he called emanationhe had discovered the element ... Dorn regarding the 
discovery of radon (Figure 1). ... thorium) as a gas and an element, ... recognition 
of his work at McGill University ... The building where Rutherford and Soddy ... In 
the literature Friedrich Ernst Dorn is com- .... Curie (the first to notice the phenome
-. [DOC] [TLE] radon facts, information, pictures | Encyclopedia.com articles about ... [PAR] If a house or building has been built above soil containing uranium, radon may 
collect in the ... In 1900, German physicist Friedrich Ernst Dorn (1848-1916) 
found a third radioactive element. Dorn found this element because of an 
observation made by Curie. ... At first, Dorn called this radioactive gas radium "
emanation". [DOC] [TLE] Radon History - OhioRadonPro [PAR] Women are found who have married seven husbands, all of whom have this ... of 
radon by Friedrich Ernst Dorn in 1900, initially called radium emanation and not 
... Yes, there was a radioactive substance in the mines that also happened to be 
a gas. ... In 1950 there were about 500 miners working in a number of different... [DOC] [TLE] Chapter 1: Trafficking Materials and Gendered Experimental Practices [PAR] In 1904, its price was $10$15 per mg and just before the First World War, ... After 
the discovery of the new radiation, Marie Curie decided to work on Becquerel .... 
she successfully identified radium emanation as a radioactive gas with lower ... 
the new element that the German chemist Friedrich Giesel had named emanium. [DOC] [TLE] radon (Rn) | chemical element | Britannica.com [PAR] Rn chemical element, a heavy radioactive gas of Group 18 (noble gases) of the 
periodic table, ... (Radon was originally called radium emanation.) ... generates 
radon gas that can diffuse through soil and rock and enter buildings through ... 
Discovered in 1900 by German chemist Friedrich E. Dorn, radon-222 (3.823-day
... [DOC] [TLE] Radon - Gas, Radioactive, Levels, and Radiation - JRank Articles [PAR] The discovery of radon is credited to Friedrich Dorn (1848-1916), a German 
physics professor. ... emitted a radioactive gas that was called radium emanation 
for several years. ... Radon is commonly found at low levels in widely dispersed 
crustal ... The working level unit is used to measure

Question: Building on the Curies' work, Friedrich Dorn found this gas & first called it "emanation"
Answer: radon