Since Rayleigh and Ramsey discovered argon at the end of the 19th century, the chemical inertness of rare gases has been a hot topic in the chemical industry. Subsequently, chemists have fully demonstrated the chemical inertness of rare gases from experimental research. The famous British atomic physicists Rutherford and Sodi and others used less than 1 cubic centimeter of hydrazine, treated with sulfuric acid, hydrochloric acid and nitric acid, and passed through strong oxidants such as lead chromate and magnesium chromate. No chemical was found. The reaction takes place. In the organic world, no traces of rare gas compounds have been found, further consolidating the view that rare gases are completely inert to chemicals. They seem to be the loner in the family of elements, and do not interact with other elements.
Until 1962, Canadian chemist Bartlett discovered that it could combine with oxygen to form O2PtF6 when studying the super oxidizing agent platinum hexafluoride (PtF6). This is the first time that humans have produced O2+ salts, which proves that PtF6 is a very strong oxidant.
Following the method of synthesizing O2PtF6, the vapor of PtF6 was mixed with an equimolar amount of hydrazine, and an orange-yellow solid of XePtF6 was easily obtained at room temperature. Humans synthesized the first rare gas compound, hexafluoroplatinate (XePtF6), which was synthesized at room temperature. The idea of ​​so-called chemical inertness of rare gases has been overturned.
In the short period of time, a series of rare gas compounds such as fluorinated fluorine compounds, lanthanum oxyfluorides and lanthanum oxides of different valence states have been synthesized. By 1995, rare gas compounds had broken through – the University of Helsinki in Finland synthesized a series of new rare gas compounds – HXY (X is a rare gas element, Y is a halogen), such as HXeCl, HXeBr and so on. However, the compounds of rare gases such as lanthanum and cerium have not been synthesized so far, and their completion depends on the efforts of the next generation of chemists.
