(EN) Something about helium ....

HELIUM

Znažčka : He

Atomic number : 2

atomic weight : 4.0026 g / mol

Helium is one of the noble gas group on the periodic table. This is the second lightest element .

 

The main sources of helium in the world is a series of natural gas fields in the United States .

Helium on Earth occurs only very rarely . The Earth's atmosphere occurs only at higher

layers, due to its extremely low weight of the atmosphere gradually fades into

interplanetary space .

 

A lesser amount is found in natural gas , which is obtained from freeze . helium

and rarely rises from cracks in the ground, the area 's most famous springs are located in the Rocky

Mountains in the United States . It is assumed that this product is helium nuclear decay of elements in the Earth's

cortex .

 

In the universe after hydrogen , helium is the second most represented elements . It occurs mainly

in all luminous stars, which is one of the intermediates in controlled thermonuclear fusion , which

according to current theories of basic energy source in the universe . About 25% of

mass surrounding the observable universe .

 

Article prepared by Dominik Kopiar