He	Z =  2	◊ ◊ ◊ ◊ ◊	Helium
			From the Greek "helios", meaning "sun"
(AM) Atomic Mass	4.0026  amu	♦	Oxidation States	0
(BP) Boiling Point	-268.9  °C	♦	(MP) Melting Point	-272.2  °C
(ρ) Density	0.000178  g/cm3	♦	Crystal Structure	Hexagonal
( χ ) Electronegativity	n/a	♦	(AR) Atomic Radius	n/a
Physical State	Gas	♦	(C) Heat Capacity	5.193  J/g °C
Electronic-Config	1s2	♦	(I1) First Ionization E	2372.28  kJ/mol
(ΔHvap) Heat of Vaporization	0.0829  kJ/mol	♦	(ΔHfus) Heat of Fusion	0.0138  kJ/mol
Year of Discovery	1895	♦	Location of Discovery	London
(E°) Standard Potential	Inert
Stable isotopes	3He,  4He
Discovered/Synthesized by	Pierre-Jules-César Janssen
Natural Source	Isolated from the fractional distillation of natural gas
Common Uses	Balloons, lasers, supercold refrigerant, cooling of MRI detectors
Other Info	Smallest element Its global supply is in critical shortage
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