Helium
All about Helium
*STP = standard temperature and pressure
Helium Information
| Name |
Helium |
| Standard Atomic Weight (Ar) | 4.002602 |
| Melting point |
0.95 K |
| Boiling point | 4.222 K |
| Colour @ STP |
colourless |
| Density @ STP | 0.1786 g/L |
| Form @ STP | data |
| Discoverer | Pierre Janssen |
| Discovered | 1868 |
| Named by | Sir Norman Lockyer |
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