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Radan Research Paper

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History-
Radon was discovered in 1900 by German Chemist Friedrich Ernst Dorn. Radon was the third radioactive element found after Polonium and Radium. Dorn discovered the element because of an observation made by Marie Curie. Dorn discovered that when radium is released into the air the air becomes radioactive. After observing the gas for a while Dorn discovered that radium produces a gas when it breaks apart. Dorn first called the gas “Radium Emanation”,Emanation meaning something given off. In 1923, seven years after Dorns death scientists changed the name “Radium Emanation” to Radon. Referring to where the gas comes from, Radium.
Development of the Periodic Table-
A Russian chemist named Dmitri Mendeleev was the first scientist to make …show more content…

Also in this family are Xenon, Krypton, Argon, Neon, and Helium. On the periodic table Radon is placed in row 6 column 18. It is placed with the noble gases because all Noble Gases Under standard conditions, are odorless, colorless, and have monatomic gases with very low chemical reactivity. Radon has an atomic number of 86, meaning Radon has 86 protons in its nucleus. The atomic number also determines the chemical properties of an element and its place in the periodic table. Radon also has an atomic mass of 222. Atomic mass is the mass of an atom in an element. It is approximately equivalent to the number of protons and neutrons in the atom. Since we know Selenium has 86 protons we can figure out it has 136 neutrons by subtracting the number of protons from the atomic …show more content…

All of Radons’ isotopes are radioactive. Radons most stable Isotope. While there are no stable isotopes in radon, the most stable isotope is 222Rn, which is a decay product of 226Ra. There are 3 Isotopes of Radon that occur in nature, radon-219, radon-220, and radon-222. Isotopes are two or more forms of an element. Each isotope is different because of its mass number. All Isotopes of Radon have very short half-lives and they do not remain in the atmosphere for very long. The half-life of an element is the time it takes for half of a sample of the element to break down. The radon Isotope with the longest half-life is Radon-222, lasting only 3.8 days. Most of Radons Isotopes do not last more than a few seconds, or minutes. Some of the physical properties of Radon is that it is a colorless, odorless, and tasteless gas. When radon is at standard temperature and pressure, radon forms a monatomic gas with a density of 9.73 kg/m3, about 8 times the density of the Earth's atmosphere at sea level, 1.217 kg/m3. Some of the Chemical Properties of Radon is, Radon has an atomic number of 86. Also it has a density of 9.73 g/l. The melting and boiling points of radon are -71 C, and -62

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