Helium/Properties: Difference between revisions
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imported>David Yamakuchi m (New page: {{subpages}} {{Props|Material=Helium}}) |
imported>David Yamakuchi mNo edit summary |
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Latest revision as of 15:21, 27 June 2008
| Atomic_symbol: | Hee | |
| Atomic number: | 2e | |
| Atomic mass: | 4.002602(2)e | |
| Standard phase: | Gase | |
| Elemental Class: | Noble gase | |
| Electronegativity: | n/ae | |
| Density: | 0.1785g/Le | |
| Molar volume: | 31.8 cm3/mole | |
| Melting point: | -272.2 °C e | |
| Boiling point: | -268.93 °C e | |
| Heat of fusion: | 5.23 kJ·mol−1e | |
| Heat of vaporization: | 0.083 kJ·mol−1e | |
| Crystal structure: | Hexagonale | |
| Atomic radius: | 0.49Åe | |
| Covalent radius: | 0.93Åe | |
| Thermal conductivity: | 0.00152 W/cmKe | |
| Note: Please see template {{Props}} for instructions on adding new properties of Helium to this table. | ||