Shell Structure
Crystal Structure
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| Element | Information |
| Atomic Number: | 68 |
| Symbol: | Er |
| Name: | Erbium |
| Name Origin: | Named for the Swedish town, Ytterby |
| Type: | Rare Earth |
| Atomic Mass: | 167.26 |
| Melting Point: | 1522 |
| Boiling Point: | 2510 |
| Neutrons: | 99 |
| Density: | 8.795 |
| Crystal Structure: | Hexagonal |
| Discovered: | 1843 |
| Discoverers: | Discovered by Carl Gustaf Mosander (Sweden). |
| Other Names: | |
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