Hydrogen

Hydrogen
H
In situ availability:	trace
Necessity:	critical
Atomic number:	1
Atomic mass:	1.00794
group:	1
period:	1
normal phase:	gas
series:
density:
melting point:
boiling point:
{{{aprior}}} ← N/A → {{{anext}}}
0 ← H → He
{{{bprior}}} ← Li → {{{bnext}}}
Atomic radius (pm):	{{{radius}}}
Bohr radius (pm):	{{{bohr}}}
Covalent radius (pm):	{{{covalent}}}
Van der Waals radius (pm):	{{{vdwr}}}
ionic radius (pm):	{{{irad}}}
1st ion potential (eV):	{{{ipot}}}
Electron Configuration
{{{econfig}}}
Electrons Per Shell
{{{eshell}}}
Electronegativity:	{{{enega}}}
Electron Affinity:	{{{eaffin}}}
Oxidation states:	{{{oxstat}}}
Magnetism:	{{{magn}}}
Crystal structure:	{{{cryst}}}

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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)

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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.

External Links

Environmental Chemistry: Hydrogen
WebElements: Hydrogen