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 Helium-3 description & physical constants

Gas description

      Helium-3 is a stable and lighter isotope of natural helium. It is an inert, nontoxic and nonflammable gas. It is colorless,
      tasteless and ordorless.

      Helium-3 is obtained from transformation of tritium 3H into 3He after ß (beta) emission.

Physical constants

      Atomic Number : 3

      Half-life : stable
      Number of Protons : 2
      Number of Neutron : 1

      The 3He nucleus contains a single neutron which gives a nuclear spin.
      Spin (Jp ): 1/2+

      % Abundance = 0.0001373

      Molecular Weight : 3 016029.310 ± 0.001

       Compressibility factor (z) :
       pressure in bar
1
5
10
20
30
50
100
150
200
       Z at 288 K (15C)
1.0005
1.0024
1.0049
1.0098
1.0147
1.0244
1.0487
1.0727
1.0965
       Z at 323 K (50C)
1.0004
1.0022
1.0043
1.0086
1.0129
1.0125
1.0429
1.0641
1.0851

       Boiling Point : -269.96°C (3.19°K) Freezing point at 1 atm : none
       Critical point : -269.82°C (3.33°K) Vapour pressure at 21.1°C (70°F) : N/A
       Density at 21.1°C (70°F) : 0.1650 kg/m3 Mass excess (keV) : 14931.204 ± 0.001
  Binding energy (keV) : 7718.058 ± 0.002