What is a noble gas?

noble gases, from the German word Edelgas , are a family of unreactive monoattomic gases found on the extreme right of the periodic table. Noble gases include helium, neon, argon, Krypton, Xenon, Radon and the latest ununoktium with an atomic number of 118, whose three atoms have been observed during experiments from 2002 - 2005. Helium, the most common noble gas, is about 1/4. Of all atoms in space. Argon is the most common noble gas here on the ground where it accounts for 1% of our atmosphere. Helium is also available in considerable amounts of underground gas reserves. Argon of noble gas is often used in bulbs where it provides an inert atmosphere for electrified tungsten fiber. Noble gases are often an excellent alternative to another gas used to provide a non -relevant atmosphere, hydrogen, because of their lack of flammability. Neon is used for lighting and Krypton is used for lasers.

4 Helium has the lowest boiling point of all elements, at 4.22 Kelvins, or just a few degrees above absolute zero. The liquid helium is extremely cold and can be used as a coolant in the latest options when liquid nitrogen is insufficient. Let's not forget that helium can be inhaled to get your voice.

The reason for extremely low reactivity of noble gases is given by their full -fledged electron shells - their external electron shells have all the electrons that can hold, and their electronegativity is negligible - not in search of additional electrons, they have only a small chemical tank. However, the Xenon, Krypton and Argons mixture can be created under exotic conditions in the laboratory.