Radon is a chemical element with the symbol Rn and an atomic number equal to 86 (86 protons and 86 electrons), with an atomic mass of approximately 222 u. It belongs to the family of noble gases, found in group 18 or 8A of the periodic table of elements. As the location in the table already says, radon is in a gaseous state and is inert, that is, it does not react with other elements.
Physical Characteristics of Radon: At room temperature it is a colorless gas, but when subjected to cooling below the solidification point, it starts to exhibit a bright phosphorescence with a yellowish tone when the temperature is reduced and red-orange when it starts to reach the air state liquefied.
Radon Applications: it is used in radiotherapy and in the composition of capsules for use in cancer patients. For this last purpose, the gas is obtained from the radioactive chemical element: Radium (Ra).
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By Líria Alves
Graduated in Chemistry
Would you like to reference this text in a school or academic work? Look:
SOUZA, Líria Alves de. "Radonium"; Brazil School. Available in: https://brasilescola.uol.com.br/quimica/radonio.htm. Accessed on June 28, 2021.