Hydrogen

Hydrogen

H
In situ availability:	trace
Necessity:	critical
Atomic number:	1
Atomic mass:	1.00794
group:	1
period:	1
normal phase:	Gas
series:	Non-metals
density:	0.08988 g/L
melting point:	14.175K -258.975°C -434°F
boiling point:	20.418K -252.732°C -422.918°F
N/A ← N/A → N/A
N/A ← H → He
N/A ← Li → Be
Atomic radius (pm):	25
Bohr radius (pm):	53
Covalent radius (pm):	37
Van der Waals radius (pm):	120
ionic radius (pm):	-
1st ion potential (eV):	13.60
Electron Configuration
1s¹
Electrons Per Shell
1
Electronegativity:	2.2
Electron Affinity:
Oxidation states:	1
Magnetism:
Crystal structure:	Hexagonal

Hydrogen is a Non-metal in group 1. It has a Hexagonal crystalline structure. This element has two stable isotopes: 1 and 2.

Natural Isotopes

H1
H2 Deuterium

Synthetic Isotopes

H3 Tritium
- 12.33 year half life. Undergoes Beta Decay to become Helium 3(He3)
H4
- Undergoes immediate Neutron Decay to become Tritium(H3)

Hydrogen is the simplest, lightest, and first element formed after the big bang. It is the most common element, making up approx 90% of the universe by weight. Hydrogen is one of the highly useful and necessary elements believed to be in critically short supply on Luna. Its most common nuclear permutation (isotope) is a single proton, although it can also exist with one (deuterium) or two (tritium) neutrons. On Earth, hydrogen is most commonly found combined with oxygen in the form of water (H₂O). The Moon is much smaller than Earth, hence its gravity is not strong enough to retain liquid oceans nor gaseous amtosphere; most of the volatiles of the Moon, including hydrogen, have long since evaporated and escaped into space.

Common uses of hydrogen which may be applied on the Moon include: rocket fuel, hydrogen fuel cells, ilmenite reduction, reduction of metal ores and nitrogen fixation. Deuterium/tritium can be as fuel used in nuclear fusion.

Hydrogen has possibly been detected at the Lunar poles, but the amount available has been a topic of controversy.