The element Radon was discovered in 1899. Friedrich Ernst Dorn discovered Radon in Halle, Germany when he was experimenting with Radium. In 1908, Robert Gray and William Ramsey isolated the gas. They named the element nitron. Since 1923 the element has been called Radon. It’s name is derived from the element Radium. Radon was first detected as an emission from Radium. Radon’s element symbol is Rn. Radon’s atomic mass is 86 and it’s in the noble gas family. It contains 86 protons, 136 neutrons and 86 electrons. Radon’s electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 5d10 4f14 6p6. Radon is a gas at room temperature and its density is .00973 g/cm3. Radon is the most densest gases at room temperature. Radon begins …show more content…
Radon is highly unreactive with oxygen, acids and bases. The element is soluble in water. Radon is not produced commercially. Radon is a natural occurring radioactive gas, and comes from the natural breakdown of Uranium. It is found in igneous rock and soil. Radon’s decay products are toxic and radioactive. It can be found in almost all homes and is the number one cause of lung-cancer in nonsmokers in the USA. Radon was used to treat cancer by radiotherapy, but now safer treatments are available. Also, radon is used in spas and an earthquake predictor and geothermal prospector. Radon’s crustal abundance is 4 x 10-13 mg/kg and its oceanic abundance is 6 x 10-16 mg/l. If Radon is inhaled it can cause more than lung cancer, such as silicosis, pulmonary fibrosis and can generate genotoxic effects. Radon-222 and Radon-220 are the only to abundantly found in the everyday life of humans. Radon-222 occurs most in the environment. Radon is the only gas that has radioactive isotopes and poses a threat to your health to the environment in it’s normal state. According to “Radon” Radon was the fifth radioactive element to be discovered. In 1530, miner’s begin getting a disease known as “mala metallorum” which was later found that Radon was the
In chapter 8 titled "Radium (Ra)" of The Poisoner's Handbook by Deborah Blum, the most interesting story developed within this chapter was the death of dial workers at Orange, New Jersey after been exposed to radium every day. It was interesting due to the fact that radium was used everywhere in the community and was never thought it could harm anyone. Radium was a super element that was used everywhere, but its continuous use unmasked its fatal habits. As it was stated in the text, "Radiant health, the ads proclaimed-beautiful skin, endless vigor, and eternal health—ingesting radium seemed the next best thing to drinking sunlight." (Blum 179). People were accepting radium as a natural gold element but they haven't realized constant contact
This uneasiness is a result of events over the past one hundred years showing the dangers of radiation. Although most accidents today leading to death from radiation poisoning occur from human error or faults in equipment, the incident involving the now named "radium girls" transpired from lack of public awareness and safety laws. (introduce topics of the paper) The Radium Luminous Material Corporation was founded in 1914 (renamed in 1921 to the United States Radium Corporation) by Dr. Sabin Arnold von Sochocky and Dr. George S. Willis becoming the first U.S. company to produce radioluminescent paint. The paint used by this particular company was the trademarked "Undark", invented by William J. Hammered through mixing radium, zinc sulfide and glue with the help of Marie and Pierre Currie and Henri Becquerel.
waste to be formed. This waste is very dangerous since it remains radioactive for hundreds of
Radon gas was found in the 1870s, when some scientists were mining for ore in Ore Mountains in Schneeberg, Saxony. The area has a high content of radon in the tunnels because the area has been mined since the 1470s. The scientists later discovered that 75% of the miners died from lung cancer but it did not shut down the tunnels until 1950.
-Miners risked their lives when they were searching for uranium because they were exposed to radioactive waves which is a huge health concern
Megalodon is still alive to this day because their has been giant sea animals bitten in half like a shark,whale,and there is footage of the Megalodon. The Megalodon went extinct 2.6 million years ago but I love the megalodon because it is the most ferocious predator. Meet the biggest predator in vertebrate history. The Megalodon shark is most known as the most gigantic shark to have ever lived on our planet and one of the largest vertebrate predators in history. Megalodons traveled the seas from 28 million years ago until 1.6 million years ago when they were wiped out during the Pleistocene Extinction. Megalodons were as we know gigantic and humongous. Some of the teeth found from this great predator have been maybe 17 centimeters in total height but most are between 3 to 5 inches. Reconstructions using jaws and other bones suggest that Megalodons most likely reached maximum lengths up to 54 feet around 3 times larger than Great Whites.
he found the number of alpha particles emitted per second by a gram of radium.
Pierre Janssen discovered helium in the spectrum of the corona of the sun during an eclipse in 1868. Shortly after it was identified as an element and named by the chemist Sir Edward Frankland and the British astronomer Sir Joseph Norman Lockyer. The gas was first isolated from terrestrial sources in 1895 by the British chemist Sir William Ramsay, who discovered it in cleveite. In 1907 Sir Ernest Rutherford showed that alpha particles are the nuclei of helium atoms.
Uranium, a radioactive element, was first mined in the western United States in 1871 by Dr. Richard Pierce, who shipped 200 pounds of pitchblende to London from the Central City Mining District. This element is sorta boring but I found something interesting, they used it to make an an atomic bomb in the Cold War. In 1898 Pierre and Marie Curie and G. Bemont isolated the "miracle element" radium from pitchblende. That same year, uranium, vanadium and radium were found to exist in carnotite, a mineral containing colorful red and yellow ores that had been used as body paint by early Navajo and Ute Indians on the Colorado Plateau. The discovery triggered a small prospecting boom in southeastern Utah, and radium mines in Grand and San Juan counties became a major source of ore for the Curies. It was not the Curies but a British team working in Canada which was the first to understand that the presence of polonium and radium in pitchblende was not due to simple geological and mineral reasons, but that these elements were directly linked to uranium by a process of natural radioactive transmutation. The theory of radioactive transformation of elements was brilliantly enlarge in1901 by the New Zealand physicist Ernest Rutherford and the English chemist Frederick Soddy at McGill University in Montreal. At dusk on the evening of November 8, 1895, Wilhelm Rontgen, professor of physics at the University of Wurzburg in Germany, noticed a cathode tube that a sheet of paper come distance away. He put his hand between the tube and the paper, he saw the image of the bones in his hand on the paper.
Scandium is a member of the transition elements group which is a silver-white element that has been categorized as a rare earth element. Scandium was discovered by Nilson in 1879. Its existence was originally predicted by Dmitri Mendeleev ten years before being discovered by Nilson, but Dmitri was unable to isolate the element
Krypton is the fourth Noble Gas. The element Krypton is also an extremely hard element to extract. Krypton was extracted by liquefying air, just like the previous element. Sir William Ramsay extracted the gas by cooling the air to -152*C and then proceeded to pressurize the air. Krypton’s periodic table labels are as follows: the chemical symbol is “Kr”, the atomic weight is 84, and the atomic number is 36. Because Krypton is so hard to extract, the gas is named after the Greek word Kryptos.
In 2007, the world consumed 5.3 billion tons of coal, 31.1 billion tons of oil, 2.92 trillion cubic meters of natural gas, and 65,000 tons of uranium. All of these energy needs could have been met with only 6,600 tons of thorium, an abundant, slightly radioactive element found in the Earth’s crust.
At least it looked like magic. Radium was an element that glowed and that was part of its allure. Just ask the dial painters who later came to be known as "Ghost girls". However, glowing was not a problem for the "ghost girls", and they made the most of the sinister side effect. While mixing the paint, radioactive dust would fill the air and would end up on the girl's hair and clothes, and they loved it! They would put some on their cheeks to give them a pink "glow". They would wear their good dresses to the plant so they would be the ones shimmering and shining in the evening. They went as far as painting radium onto their teeth for a smile that would light up the dark. Therefore, it was no wonder that after a shift
The discovery of radioactivity can also be referred to the dawn of the nuclear age. Many scientist, were interested in satisfying their curiosity and began to explore nature and the function of atoms. Marie and Pierre Curie was apart of the exploration, being a husband and wife team. Marie and Pierre Curie began their experiment with a uranium-containing ore. The husband and wife team were the first ones who coined the word radioactivity. This term is used to describe the special characteristics of some elements that are radioisotopes. While comparing the activity of pure uranium to a uranium ore sample, they found that the ore was significantly more radioactive than the pure material. They fulfilled that the ore contained additional radioactive components besides the uranium. This observation led to the discovery of two new radioactive elements which they named polonium and radium.