Hydrogen
From Marspedia
| H | 1 |
| Hydrogen | |
Abundance: 0.03% (as H2O)
Hydrogen (periodic table symbol: H1) is a chemical element that can be found in the atmosphere and in frozen water on Mars.
[edit] Biological significance
The metabolism of human beings, animals and microbes depends on water, composed of hydrogen and oxygen. The human body contains about 70% water. Human beings need about 2 liters water per day for drinking, hard working people need even more.
[edit] Production
Hydrogen can be produced by electrolysis of water.
