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1 A Brief History Of Radon - Radon Eliminator
https://www.radoneliminator.com/blog/brief-history-of-radon
The German chemist Friedrich Ernst Dorn has been credited with the discovery of radon in 1900. He discovered the new gas, which he referred to ...
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2 The Discovery and History of Radon
https://dupageradon.com/the-discovery-and-history-of-radon/
The history of radon began when Friedrich Ernst Dorn, a physicist and university professor in Germany, first discovered that radon, a ...
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3 When was radon gas discovered? - Radonovalaboratories.com
https://radonovalaboratories.com/when-was-radon-gas-discovered/
To find out when radon gas was first discovered, we must go back to the 16th century when scientists started to study the reasons for ...
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4 Radon - Wikipedia
https://en.wikipedia.org/wiki/Radon
Radon was the fifth radioactive element to be discovered, in 1899 by Ernest Rutherford and Robert B. Owens at McGill University in Montreal, after uranium, ...
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5 It's Elemental - The Element Radon
https://education.jlab.org/itselemental/ele086.html
Radon was discovered by Friedrich Ernst Dorn, a German chemist, in 1900 while studying radium's decay chain. Originally named niton after the Latin word for ...
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6 The Discovery of Radon in Homes: The Story of Stanley Watras
https://www.radonillinois.com/the-discovery-of-radon-in-homes-the-story-of-stanley-watras/
It was discovered quite by accident through a man named Stanley Watras, who was a construction engineer. In 1984, while working at Limerick ...
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7 Radon - Element information, properties and uses | Periodic ...
https://www.rsc.org/periodic-table/element/86/radon
The discovery of radon is credited to a German physicist Friedrich Ernst Dorn, who traced this observed radioactivity to a gas which was given off by radium - a ...
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8 Radon (Rn) - Discovery, Occurrence, Production, Properties ...
https://www.azom.com/article.aspx?ArticleID=7948
Later, in 1908, Robert Gray and William Ramsay isolated the gas which was named as niton. The gas has been called as radon by IUPAC since 1923.
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9 Facts About Radon | Live Science
https://www.livescience.com/39546-radon.html
Credit for the discovery of radon is given to German chemist Friedrich Ernst Dorn in 1900, according to Chemicool. He discovered the new gas ...
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10 How Was Radon Discovered? - AdvantaClean
https://www.advantaclean.com/blog/2018/february/how-was-radon-discovered-/
Where does radon come from? In 1899 radon became the fifth radioactive element discovered after uranium, thorium, polonium, and radium. In 1900 ...
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11 Radon Element Facts - Chemicool
https://www.chemicool.com/elements/radon.html
Radon gas was discovered in 1900 by Fredrich E. Dorn in Halle, Germany. He described it as radium emanation because it arose from the element radium, ...
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12 ERNEST RUTHERFORD, THE “TRUE DISCOVERER” OF ...
http://acshist.scs.illinois.edu/bulletin_open_access/v28-2/v28-2%20p76-83.pdf
The discovery of radon presents an interesting case. In a recent report to the IUPAC ... tive emanation was a gas present in such minute quanti-.
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13 A Short Radon History Lesson - National Radon Defense
https://www.nationalradondefense.com/about-us/articles/10376-a-short-radon-history-lesson.html
All the noble gasses are odorless and colorless. Radon, however, became recognized as a serious problem in 1984 after radon decay particulates ...
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14 The History of Radon Gas in Health
https://www.radonrid.com/the-history-of-radon-gas-in-health/
In 1900, German physicist Friedrich Ernst Dorn discovered that radon is emitted from radium. Future experiments by Rutherford, Owens, and other ...
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15 Radon | Rn (Element) - PubChem
https://pubchem.ncbi.nlm.nih.gov/element/Radon
The element was discovered in 1900 by Dorn, who called it radium emanation. In 1908 Ramsay and Gray, who named it niton, isolated the element and determined its ...
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16 Radon | Definition, Properties, Effects, & Facts | Britannica
https://www.britannica.com/science/radon
Radon-220 (thoron; 51.5-second half-life) was first observed in 1899 by American scientist Robert B. Owens and British scientist Ernest Rutherford, who noticed ...
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17 When was radon gas discovered? | Radonova Laboratories
https://www.mynewsdesk.com/radonova-laboratories-ab-slash-international/blog_posts/when-was-radon-gas-discovered-101287
Dorn was more focused on the analysis of radium's decay chain. While Rutherford observed that the gas emitted by radium was also radioactive.
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18 The Story of How Radon was Discovered in Homes
https://www.georgia.brickkicker.com/the-story-of-how-radon-was-discovered-in-homes/
Radon is a naturally occurring radioactive gas that can cause lung cancer. Radon is created as part of the decay process of uranium.
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19 Radon: It's Still Here - The Washington Post
https://www.washingtonpost.com/archive/realestate/2003/01/25/radon-its-still-here/cb746e50-a943-4245-af59-39b4f0328f82/
Radon was first recognized as a risk for miners in 1879. The link to cancer was sealed in the 1950s and 1960s. But indoor radon did not hit the ...
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20 What is Radon? | Environmental Medicine | ATSDR
https://www.atsdr.cdc.gov/csem/radon/radon.html
German physicist Friedrich Ernst Dorn discovered radon in 1900 while researching the natural radioactive decay of radium. Radon is a radioactive element.
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21 Radon Overview & Chemical Symbol | Is Radon a Noble Gas?
https://study.com/learn/lesson/radon-overview-chemical-symbol.html
Radon was discovered in the year 1900 by a German chemist named Friedrich Ernst Dorn. Dorn noticed a gas being generated inside the ampules ...
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22 Radon | Encyclopedia.com
https://www.encyclopedia.com/science-and-technology/chemistry/compounds-and-elements/radon
Credit for the discovery of radon is often given to other scientists as well. In 1899, Robert B. Owens announced the presence of a radioactive gas that he ...
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23 3 radon gas stories you won't believe are real - Airthings
https://www.airthings.com/resources/radon-gas-stories
Radon was discovered in 1900 by a German chemist called Friedrich Ernst Dorn4, but at the time, nobody thought it was dangerous. In fact, most ...
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24 Ramsay radon: teaching notes - Le Moyne
https://web.lemoyne.edu/~giunta/classicalcs/ramsaynote.html
Notes: William Ramsay (1852-1916) was awarded the Nobel Prize in chemistry in 1904 for the discovery of the noble gases. Ramsay had a part in the discovery ...
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25 Radon Lessons: What Watras Taught Us - MEPHT
https://matracking.ehs.state.ma.us/Environmental-Data/radon/radon_lessons.html
› Environmental-Data
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26 Radon Gas Is All Around Us - RadonSeal
https://www.radonseal.com/radon_gas.htm
German physicist Friedrich Ernst Dorn discovered in 1900 that radium was giving off a gas – “radium emanation.” The gas became known as niton (from the Latin ...
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27 Where Does Radon Come From?
https://www.dhs.wisconsin.gov/radon/geological-radon.htm
Radon is found throughout Wisconsin. Radon is a radioactive gas that is found across the state of Wisconsin and travels only a meter or two ...
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28 Radon - McGill School Of Computer Science
https://www.cs.mcgill.ca/~rwest/wikispeedia/wpcd/wp/r/Radon.htm
Radon (named after radium) was discovered in 1900 by Friedrich Ernst Dorn, who called it radium emanation. In 1908 William Ramsay and Robert Whytlaw-Gray, who ...
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29 Radon and Cancer - American Cancer Society
https://www.cancer.org/healthy/cancer-causes/radiation-exposure/radon.html
Radon is a colorless, odorless, radioactive gas. It forms naturally from the decay (breaking down) of radioactive elements (such as uranium) ...
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30 Radon Facts
https://www.radon.com/radon_facts/
PROPERTIES: Radon is a gaseous highly radioactive element discovered by English physicist Ernest Rutherford in 1899. The discovery is also credited to German ...
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31 Radium-226 - | Washington State Department of Health
https://doh.wa.gov/sites/default/files/legacy/Documents/Pubs/320-081_ra226_fs.pdf
Radium was discovered by Marie Sklodowska Curie, a Polish chemist, ... Radium is now used to produce radon, a radioactive gas used to treat some types of.
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32 Radon in Ground Water in Guilford County, North Carolina
https://pubs.usgs.gov/fs/1997/0147/
Radon-222 (referred to in this report as radon) is a colorless, odorless, and tasteless gas that was discovered in 1900 by Fredrich Dorn, a chemist who was ...
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33 World History Of Radon Research And Measurement From ...
https://ui.adsabs.harvard.edu/abs/2008AIPC.1034...20G/abstract
Although, radon was discovered in 1900, the effects of prolonged exposure had been suspected and noted 300 years earlier among underground miners who developed ...
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34 Professor recalls 'crazy' discovery of radon in Berks
https://www.mcall.com/news/local/mc-pa-radon-professor-history-20150127-story.html
Radon is a colorless, odorless, radioactive gas that occurs naturally through the breakdown of uranium in soil and rocks, entering structures ...
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35 Radon and Your Home - Maryland Geological Survey
http://www.mgs.md.gov/geology/geohazards/radon_and_your_home.html
Radon, first discovered in 1910, is a colorless, odorless, radioactive gas formed from the radioactive decay of radium. Radium in turn is formed from ...
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36 A Brief History of Radon
https://blog.radonaway.com/a-brief-history-of-radon/
She and her husband Pierre Curie discovered radium, a decay product of uranium, in 1898. Two years later, German scientist Freidrich Ernst ...
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37 10 Radon Facts (Rn or Atomic Number 86) - ThoughtCo
https://www.thoughtco.com/interesting-radon-element-facts-603364
It was one of the first radioactive elements that was discovered. Fredrich E. Dorn described radon gas in 1900.
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38 Radon | History, Uses, Facts, Physical & Chemical ...
https://periodic-table.com/radon/
Radon is radioactive gas and was discovered by 1899 by Ernest Rutherford and Robert B. Owens. It is formed by the radioactive decay of radium.
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39 The History of Radon - Radon Testing Specialists
https://tetonradonservices.com/history-of-radon/
In order to detect radioactive gas a person either needs advanced equipment or careful observation. In the year 1900, a scientist by the name of Friedrich Ernst ...
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40 10 Radon Facts (Rn or Atomic Number 86) - Science Notes
https://sciencenotes.org/10-radon-facts-rn-or-atomic-number-86/
While Rutherford and Owens may be credited with the element discovery, Rutherford gave credit to the Curies. German Friedrich E. Dorn described ...
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41 Radon - New World Encyclopedia
https://www.newworldencyclopedia.org/entry/Radon
Radon (named after radium) was discovered in 1900 by Friedrich Ernst Dorn, who called it radium emanation. William Ramsay and Robert Whytlaw-Gray isolated it in ...
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42 Radioactivity: Radon Gas, its Properties and the Risks of ...
https://www.longdom.org/open-access-pdfs/radioactivity-radon-gas-its-properties-and-the-risks-of-increasing-its-concentration.pdf
Radon is a natural radioactive gas discovered in the 1900 by Dorn, who called it Radium emanation. Since 1923, it has been called radon. The ...
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43 Radon and Cancer - NCI
https://www.cancer.gov/about-cancer/causes-prevention/risk/substances/radon/radon-fact-sheet
A fact sheet about radon, an odorless radioactive gas, and its possible association with cancer, and how to test for radon in the home.
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44 Radon, Chemical Element - Chemistry Explained
http://www.chemistryexplained.com/elements/P-T/Radon.html
Credit for the discovery of radon is often given to other scientists as well. In 1899, Robert B. Owens announced the presence of a radioactive gas that he ...
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45 Radon Definition, Facts, Symbol, Discovery, Properties, Uses
https://www.chemistrylearner.com/radon.html
We now know that the radioactive gas observed by the Curies and Ernst Dorn was Radon-222 while the gas detected by Rutherford was Radon-220. In 1908, Robert ...
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46 What is Radon? | Learn More
https://www.radonprotectionsystems.com/what-is-radon/
Radon is a gaseous highly radioactive element discovered by English physicist Ernest Rutherford in 1899. The discovery is also credited to German physicist ...
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47 BLOG: Have You Tested Your Home for Radon?
https://www.governor.pa.gov/newsroom/blog-have-you-tested-your-home-for-radon/
We first discovered radon in Pennsylvania in the 1980s when a worker at the Limerick Nuclear Power Plant in Montgomery County kept setting off ...
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48 Radon (Rn) | AMERICAN ELEMENTS ®
https://www.americanelements.com/rn.html
Radon is a radioactive noble gas that occurs naturally on earth as a decay product of uranium and thorium deposits. The initial discovery of this element ...
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49 Radon Properties - Radioactivity
https://www.radioactivity.eu.com/site/pages/Radon_Properties.htm
First discovered in 1899, radon is a colourless and odourless naturally occurring gas. It is a noble gas (and therefore chemically inert) but can be ...
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50 Radon (Rn) - Properties, Health effects & Uses of Radon - Byju's
https://byjus.com/chemistry/radon/
Radon was first detected as an emission from the radioactive decay of radium. · Radon (Rn) is colourless, tasteless, odourless gas at standard pressure and ...
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51 What do we Know About Radon Gas & Alpha Radiation?
https://evictradon.org/radon-gas-alpha-radiation/
Radon was discovered in the late 1800's by Canadian scientists Harriet Brooks and Ernst Rutherford at McGill University. Its ability to cause cancer was ...
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52 Radon - chemeurope.com
https://www.chemeurope.com/en/encyclopedia/Radon.html
The danger of radon exposure in dwellings was discovered in 1984 with the case of Stanley Watras, an employee at the Limerick nuclear power plant in ...
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53 Radon - Element, Facts, Symbol, Properties, Effects, Uses
https://www.priyamstudycentre.com/2020/12/radon.html
Radon is a chemical element or noble gas or Group 18 element of the periodic table with symbol Rn and atomic number 86. It was discovered by Ernest Rutherford ...
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54 Radon Gas is #2 Cause of Lung Cancer - InspectUSA.com
https://inspectusa.com/radon/
The German Chemist Friedrich E. Dorn discovered radon-222 in 1900, and called it radium emanation. However, a scarcer isotope, radon-220, was actually ...
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55 Where does radon come from? - RadoVent
https://www.radovent.com/radon-gas-blog/where-does-radon-come-from
In the early 1900's scientists discovered the existence of radon gas. Later in the 1980's it was realized that radon is not only a problem ...
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56 Radon 222 - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/medicine-and-dentistry/radon-222
Radon (Rn-222) is an odorless and colorless natural radioactive gas. It is produced during the radioactive decay of radium-226, itself a decay product of ...
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57 Is radon real? - DIYradon.com
https://diyradon.com/blogs/radon-measurement-blog/16500332-is-radon-real
He noticed that the radium was emanating radioactive gas which was radon gas. Since its discovery, radon has been a topic of many studies.
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58 The Homeowner's Guide to Radon Gas - The Craftsman Blog
https://thecraftsmanblog.com/homeowners-guide-to-radon-gas/
Radon gas was first discovered by physicist Ernest Rutherford in 1899, but Friedrich Ernst Dorn was credited for it when he discovered ...
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59 History of Radon: How the Element was Discovered in Homes
http://usprovc.com/history-of-radon-how-the-element-was-discovered-in-homes/
Radon was discovered in 1899 by Ernest Rutherford, who was a physicist from New Zealand. Rutherford was working on experiments to study the ...
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60 Radon - Florida Department of Health
https://www.floridahealth.gov/environmental-health/radon/radon-faq.html
What is radon? Radon is a colorless, odorless, tasteless, invisible and chemically inert gas that comes from the decay of radium in the soil.
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61 8A - Noble Gases - The Parts of the Periodic Table
https://www.angelo.edu/faculty/kboudrea/periodic/periodic_main8.htm
Radon was discovered in 1900 by Friederich Ernst Dorn while investigating "radium emanation" (first observed by Marie and Pierre Curie), a gas found in sealed ...
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62 Difference Between Radon and Radium
http://www.differencebetween.net/science/difference-between-radon-and-radium/
Discovery of Radon ... Radon was first detected in 1899 by Pierre and Marie Curie as a gas being released by the decay of radium. At the same time, the physicist ...
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63 Radon (Rn) - Chemical properties, Health and Environmental ...
https://www.lenntech.com/periodic/elements/rn.htm
chemical properties, health and environmental effects of radon. ... is colorless at standard temperature and pressure and it is the most dense gas known.
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64 Radon (Rn): Properties & Uses - StudiousGuy
https://studiousguy.com/radon-uses/
The discovery of radon presents an interesting case in the literal history of chemical elements, as to who should be credited for its discovery. An internet ...
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65 Radon in our Homes: The Science Behind the Danger
https://www.youtube.com/watch?v=tHoITOI1d8k
Oct 3, 2018
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66 Radon Gas Testing & Mitigation - What You Need to Know
https://www.simonairquality.com/facts-radon-gas-testing/
Radon is one of the highly radioactive gaseous elements discovered by Ernest Rutherford, an English physicist in 1899. Also, in 1900, the ...
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67 radon | FactMonster
https://www.factmonster.com/encyclopedia/science/chemistry/elements/radon
In about 1902, F. O. Giesel discovered actinon. In 1908 William Ramsay and R. W. Whytlaw-Gray isolated the element, which they called niton, and studied its ...
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68 Radon- Uses, Pictures, Characteristics, Properties, Periodic ...
https://www.lookchem.com/Periodic-Table/Radon/
Discovered: Radon gas was discovered in 1900 by Fredrich E. Dorn. He described it as radium emanation because it arose from the element radium, which he ...
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69 Study of Radon concentrations in a single-family home and ...
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2020000300443
Radon gas was discovered in 1900 by the German physicist Fiedrich Ernst Dorn. This noble gas is emanated naturally from the earth's crust, and can have ...
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70 Radon - ScienceDaily
https://www.sciencedaily.com/terms/radon.htm
Short-Term Radon Test Kits Are Not Effective in Measuring Radon Gas Exposure ... 6, 2021 — Since element 99 -- einsteinium -- was discovered in 1952 from ...
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71 radon - Wordorigins.org
https://www.wordorigins.org/big-list-entries/radon
The name radon is originally German, from rad- for radium and -on, indicating that it is a noble gas, like argon or neon. The name was in ...
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72 Radon "Questions and Misconceptions" Section - Maine.gov
https://www.maine.gov/dhhs/mecdc/environmental-health/rad/radon/radonfaq.htm
Sometimes it comes from BOTH places, but the presence of soil gas radon does ... Is it difficult to sell homes where radon problems have been discovered?
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73 radon fact sheet for indiana - IN.gov
https://www.in.gov/health/files/RADON_FACT_SHEET_12-20-17_-_Indiana_focusedrevisedbyIB.pdf
Radon is a naturally-occurring, radio-active gas that is found in the soil ... MYTH: It's difficult to sell homes where radon problems have been discovered.
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74 ELEMENT: RADON - Radiochemistry Society
https://www.radiochemistry.org/periodictable/elements/86.html
(From radium; called niton at first, L. nitens, shining) The element was discovered in 1900 by Dorn, who called it radium emanation. In 1908 Ramsay and Gray, ...
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75 Radon Facts for Kids - Element Rn, Properties, Radioactive ...
https://www.sciencekids.co.nz/sciencefacts/chemistry/radon.html
In 1900, German physicist Friedrich Ernst Dorn discovered radon when he found that radium compounds emit a radioactive gas which he called Radium Emanation.
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76 Group 18: Properties of Nobel Gases - Chemistry LibreTexts
https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Supplemental_Modules_and_Websites_(Inorganic_Chemistry)/Descriptive_Chemistry/Elements_Organized_by_Block/2_p-Block_Elements/Group_18%3A_The_Noble_Gases/1Group_18%3A_Properties_of_Nobel_Gases
Radon. In 1900, while studying the decay chain of radium, Friedrich Earns Dorn discovered the last gas in Group 18: radon. In his experiments, ...
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77 Radon Spas - American Nuclear Society
https://ans.org/pi/np/spas/
Radon (Rn) is an inert gas and the densest gas known. It was identified in the early 20th century. Ernest Rutherford discovered the isotope ...
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78 Radon - Uses, Atomic Number, Boiling Point, Properties and ...
https://www.vedantu.com/chemistry/radon
Radon was first discovered by Fredrich E. Dorn from Germany in 1900 while working with the radium element. Later, in 1908, Robert Gray and William Ramsay ...
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79 Mitigating Radon in Kane County, IL
https://www.tesyes.com/radon-mitigation-kane-county/
Radon was first observed as a gaseous, highly radioactive element by English physicist Ernest Rutherford in 1899. The discovery was also credited in 1900 to ...
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80 Radon
https://periodic.lanl.gov/86.shtml
The element was discovered in 1900 by Dorn, who called it radium emanation. In 1908 Ramsay and Gray, who named it niton, isolated the element and determined its ...
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81 Radon (Rn) - Atomic Number 86
https://www.breakingatom.com/elements/radon
Radon was discovered in 1889 by Ernest Rutherford and Robert Owens. It is used in radiation therapy and also in nuclear reactors. It is a non ...
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82 Radon Facts for Kids - Facts Just for Parents, Teachers and ...
https://www.factsjustforkids.com/chemistry-facts/radon-facts-for-kids/
Radon was discovered in 1889 by New Zealand-born British physicist Ernest Rutherford and U.S. electrical engineer Robert B. Owens at McGill University in ...
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83 Radon Poisoning: Symptoms, Risk Factors, and More
https://www.healthline.com/health/healthy-home-guide/radon-poisoning
Radon gas can damage cells in your lungs, which can lead to cancer. Radon is responsible for about 21,000 lung ... Here are some tentative discoveries:.
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84 What is Radon? (with pictures) - AllTheScience
https://www.allthescience.org/what-is-radon.htm
It has twenty known isotopes, only three of which occur in nature, and various isotopes were discovered by different scientists. Although Ernest ...
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85 WebElements Periodic Table » Radon » the essentials
https://www.webelements.com/radon/
Radon was discovered by Friedrich Ernst Dorn in 1900 at Germany. Origin of name: named after "the element radium" (radon was called niton at first, from the ...
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86 Radon Nuclides and Radon Generators | IntechOpen
https://www.intechopen.com/chapters/56290
[1], the radioactivity of thorium by Schmidt [2] and the discovery of actinium by Debierne [3], ... Radon (the element) is the heaviest known noble gas.
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87 History of Radon & Related Discoveries - Radoncare Blog
https://radoncare.ca/blog/2021/07/29/history-radon-and-radon-related-discoveries/
Detected a radioactive gas released from the breakdown of thorium (radon 220) and called the gas “emanation”. Rutherford determined it was ...
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88 HISTORICAL EVOLUTION OF RADON MEASUREMENTS
http://rtca.com/wp-content/uploads/2017/07/HISTORICAL-EVOLUTION-OF-RADON-MEASUREMENTS.pdf
radon was discovered in 1900, the effects of prolonged exposure had been suspected ... Radon is a radioactive noble gas, having three naturally – occurring ...
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89 Radon - Gas, Levels, Radiation, and Radioactive
https://science.jrank.org/pages/5718/Radon.html
The discovery of radon is credited to Friedrich Dorn (1848-1916), a German physics professor. Marie Curie's experiments stimulated Dorn to begin studying ...
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90 Radon: The Hidden Danger All Homeowners Should ...
https://www.hygenix.com/radon-the-hidden-danger-all-homeowners-should-understand
The decay of uranium in the soil causes the production of the gas known as radon. The discovery of the substance occurred in 1900, ...
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91 Rutherford and Radon - UNT Digital Library
https://digital.library.unt.edu/ark:/67531/metadc111247/m2/1/high_res_d/metadc111247.pdf
Dorn regarding the discovery of radon (Figure 1). Introduction. ... Europe just as radioactivity was discovered in ... thorium) as a gas and an elen'nt.
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92 THE REGION; More Radon Gas In New Jersey
https://www.nytimes.com/1986/03/30/weekinreview/the-region-more-radon-gas-in-new-jersey.html
A colorless, odorless gas, radon is created by the decay of radium, itself a byproduct of uranium decay. Clusters of houses with high levels of ...
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93 Radon: A Killer Seeping Through Your Floor?
https://scientificscarsdalian.org/750/uncategorized/radon-a-killer-seeping-through-your-floor/
Radon was first discovered by Friedrich Ernst Dorn in 1900. The first instance of radon-related health concerns was for uranium miners. Lung ...
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94 Radon
https://www.drugfuture.com/chemdata/radon.html
222Rn was discovered by Dorn in 1900 and isolated by Rutherford and Sody in 1902. Isotope 219Rn (T½ 3.96 sec, a-emitter, formed in decay chain of 235U), ...
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95 Radon - Minerals Education Coalition
https://mineralseducationcoalition.org/elements/radon/
Radon is a noble gas, so it is chemically inert. It is also highly radioactive, eventually decaying into lead. Radon has the interesting characteristic of ...
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96 Five facts every home owner should know about radon
https://ukhsa.blog.gov.uk/2015/03/20/five-facts-every-home-owner-should-know-about-radon/
Radon gas is created when natural radioactive uranium slowly decays in the ground under our homes and seeps to the surface. Because of the way ...
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97 Radon - Scientific Library
http://www.scientificlib.com/en/Chemistry/Elements/Radon.html
Radon was the fifth radioactive element to be discovered, in 1900 by Friedrich Ernst Dorn, after uranium, thorium, radium and polonium.[25][26][27] In 1900 Dorn ...
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98 Who Discovered Radon
https://wanttoknowit.com/who-discovered-radon/
In 1900 a German physicist named Friedrich Ernst Dorn discovered the radioactive gas that is emitted from radium when studying its decaying ...
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