The noble gases, also known as inert gases because they believed that it could be combined with other compounds, are the six gaseous chemical elements comprising Group VIII A of the periodic table: helium, argon, neon, krypton, xenon and radon. Helium (He), which is the second most abundant element in the universe, was identified by the British Joseph Norman Lockyer and Edward Frankland in the nineteenth century. Among its highlights profits rocket pressurization and tank of liquid hydrogen and other fuels. Argon (Ar), which is the third most abundant gas in the atmosphere, was discovered by British researchers John William Strutt Rayleigh and William Ramsay in 1894. It is especially used for filling electric lamps. Ramsay and Morris Travers first isolated in 1898, neon (Ne), krypton (Kr) and xenon (Xe), gases used in different devices and types of lighting. Finally, radon (Rn), which was discovered by German scientist Friedrich Ernst Dorn in 1900, is clear from the radio, and compounds may be used for radiotherapy.
Krypton, which is a colorless, odorless gas, can be used alone or in combination with neon and argon in light bulbs with filaments.
The English chemist Neil Bartlett was in 1962, the first compound of xenon. This substance was ratified by the Argonne National Laboratory in Illinois, United States, whose researchers obtained the tetrafloururo xenon and radon and krypton compounds.