Element Nr. 2

Helium

noble gas gas Entdeckt 1868

4.003 Atomgewicht (u)

-272.2 °C Schmelzpunkt

-268.93 °C Siedepunkt

0.000164 g/cm3 Dichte

k.A. Elektronegativität

1s2 Elektronenkonfiguration

1 Periode

18 Gruppe

📖 Über Helium

The second most abundant element in the universe and the only element discovered in space before Earth. It is produced on Earth by radioactive decay (alpha particles are helium nuclei). Helium is the only substance that cannot be solidified at normal pressure regardless of temperature.

🔧 Verwendungen und Anwendungen

MRI machine cooling (superconducting magnets)
Balloons and airships (non-flammable)
Deep sea diving gas mixtures
Leak detection in industry
Cooling nuclear reactors

💡 Wusstest du?

Fakt: Earth is slowly losing helium to space since it is so light. Most helium is extracted from natural gas wells in the USA, Qatar, and Algeria. Once released into the atmosphere, it is gone forever.