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	Helium

2 He 4.002602	Atomic Number	2
	Atomic Weight	4.002602
	Electron Config.	2

Electron configuration order: 1s-2s-2p-3s-3p-3d-4s-4p-4d-4f-5s-5p-5d-5f-6s-6p-6d-7s

Mechanical Properties Conditions

Phase Temp. (K) Pressure (Pa)

Density 0.1785 kg/m³ Gas 293.15 101325

Density 124.901 kg/m³ Liquid 4.2221 101325

Thermal Properties Conditions

Temp. (K) Pressure (Pa)

Melting Temperature 3.5 K 101325

Boiling Temperature 4.22 K 101325

Critical Temperature 5.19 K

Fusion Enthalpy 2.1 J/g 0 101325

Vaporization Enthalpy 20.71 J/g 0 101325

Heat Capacity 5193 J/kg-K 298.15 100000


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