Shell Structure
Crystal Structure
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| Element | Information |
| Atomic Number: | 2 |
| Symbol: | He |
| Name: | Helium |
| Name Origin: | Greek helios, "sun" |
| Type: | Noble Gas |
| Atomic Mass: | 4.002602 |
| Melting Point: | -272 |
| Boiling Point: | -269 |
| Neutrons: | 2 |
| Density: | 0.1785 |
| Crystal Structure: | Hexagonal |
| Discovered: | 1868 |
| Discoverers: | Discovered by Sir Joseph Norman Lockyer (UK) and Pierre-Jules-César Jannsen (France). |
| Other Names: | |
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