Helium (He)

Atomic number:   2
Symbol:   He
Atomic weight:   4.0026
Boiling Point (C):   -268.9
Melting Point (C):   -269.7
Density:   .126
heatVapor:   0.02
heatFusion:   0.005
Electrical Conductivity:   --
Thermal Conductivity:   0.0003
Specific Heat Capacity:   1.25

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