A rare element europium ( Europium), belonging to the group of lanthanides, can be found … in euros. It contains a very small amount of a metal tag on the bill, which prevents forgery. Element (atomic number 63) was discovered in the early twentieth century and named in honor of Europe. In the world there are a few mines, which produces Europe in China, Russia, as well as a small mine in the United States. But stocks are considered to be deficient. According to some estimates, the cost of one gram of Eu reaches 2 thousand. Dollars. Another interesting use of Europe has become a color reproduction TV screens and computer monitors. It was he who, thanks to the chemical properties, the presence of the screen provides a deep red color.
element argon (Argon) is known for more than its counterpart in Europe, thanks the same welding lamps and prevalence in the earth’s atmosphere. However, few people know that the inert gas argon (atomic number 18) is also used for installation of energy efficient windows. Due to the low heat conductivity, it is placed between the panes. By itself, the argon is safe, but it has the property of “squeeze out” of the atmosphere of oxygen. Hence another application of element – it is used in slaughterhouses to kill plants, for example, birds.
Scandium ( Scandium) was discovered in 1879 and named chemist Lars Frederick Nilsson in honor of Scandinavia. This element is fairly common in the crust (it is extracted from mineral thortveitite), but even 100 years after its discovery people have not figured out how to use scandium (atomic number 21). In the 1970s, experts have found that the silver metal in conjunction with the aluminum gives a surprisingly durable and lightweight alloy that can be successfully used in the aerospace industry.
Isaac Asimov is a small science-fiction novel” The trap for simpletons. ” Her characters – scientists – try to establish the cause of death of the colony of settlers on the planet immediately after landing. It turned out that the reason was berylliosis caused to surface beryllium ( Beryllium). Actually harm beryllium (atomic number 4) is not entirely fiction, though exaggerated Azimov. According to the International Agency for Research on Cancer (International Agency for Research on Cancer), beryllium is a carcinogen. On the other hand, the value of beryllium is certain: in combination with chromium, he acquires a beautiful greenish tint and becomes a precious stone, known as the emerald.
most mystical element gallium can be called ( Gallium) because of an unusual field of application. Happy serious people use gallium (atomic number 31) to the semiconductor industry or in the pharmaceutical industry. In the evening, gallium comes on stage with magicians. The fact is that this soft and shiny metal has an interesting property. At a temperature just above the room, he begins to “melt.” That is, if a spoonful of gallium put on the table, it will remain a spoon. But in a glass of hot tea she “dissolve”. The same will happen if the long heat of gallium spoon warm hands. Hence the famous trick with a spoon, “bent by thought».
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