The origin of rare gas naming
A rare gas is a group 0 element on the periodic table. At normal temperature and pressure, they are colorless and odorless monoatomic gases, making it difficult to carry out chemical reactions. There are seven kinds of rare gases, which are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), strontium (Rn, radioactive), gas (Og, radioactive, artificial elements). . Among them, Og is a synthetic rare gas, the atomic nucleus is very unstable, and the half-life is very short, only 5 milliseconds. According to the periodic law of the element, it is estimated that Og is more active than 氡. However, theoretical calculations show that it may be very lively. However, the carbon group cerium (Fl) exhibits properties similar to those of rare gases.
“noble gases” have been renamed many times since they were discovered by chemists in the 19th century. Originally they were called rare gases because chemists thought they were rare. However, this statement applies only to some of these elements, not all of which are rare. For example, argon (Ar, argon) accounts for 0.923% of the Earth's atmosphere, which is better than carbon dioxide (0.03%). Helium (Helium) is rare in the Earth's atmosphere, but it is quite abundant in the universe. It occupies 23%, second only to hydrogen (75%). Therefore, chemists have changed to inert gases (also known as inert gases), indicating that their reactivity is very low, and no compounds have appeared in nature. For scientists who have to use compounds to find elements in the early days, these elements are hard to find. However, recent research indicates that they can be combined with other elements into a compound (this is a rare gas compound), but only by means of artificial synthesis. Therefore, it was renamed as noble gas (also known as noble gas, noble gas or noble gas). This name was translated by German-made Edelgas and was named by Hugo Edman in 1898. "Noble" is similar to "precious metal" such as gold, indicating that they are not susceptible to chemical reactions, but are not capable of producing any compound.
In terms of Chinese translation, there are different names in the three places. In the "Chemical Nouns" published by the National Natural Science Terminology Committee of the Chinese mainland in 1991, the term "noble gases" was officially called the term "rare gas." The "English and Chinese vocabulary commonly used in the middle school chemistry department" of the Hong Kong Education Bureau says that "noble gases" are (high) expensive gases, and the general society still uses the name of inert gas. On the Taiwan side, the National Institute of Education of the National Compilation Museum recommends that "noble gases" be an inert gas, and less use of obligate gas, rare gas, etc., but also known as noble gas.