15.999
Atomgewicht (u)
-218.79 °C
Schmelzpunkt
-182.96 °C
Siedepunkt
0.001308 g/cm3
Dichte
3.44
Elektronegativität
[He] 2s2 2p4
Elektronenkonfiguration
2
Periode
16
Gruppe
📖 Über Oxygen
The third most abundant element in the universe and essential for most life on Earth. Produced by photosynthesis and consumed by respiration. Liquid oxygen is a pale blue substance used as rocket oxidizer. Ozone (O3) forms the stratospheric layer that shields Earth from harmful UV radiation.
🔧 Verwendungen und Anwendungen
- Medical oxygen therapy
- Rocket oxidizer (liquid oxygen)
- Steel production (blast furnaces)
- Water treatment
- Welding and cutting metals
💡 Wusstest du?
Fakt: Earth's oxygen-rich atmosphere is a biological phenomenon. For the first 2 billion years of Earth's history, there was almost no free oxygen. The Great Oxidation Event around 2.4 billion years ago, caused by cyanobacteria, radically transformed the planet and wiped out most anaerobic life.