 |
| Date of Discovery: |
1843 |
| Discoverer: |
Carl Mosander |
| Name Origin: |
Ytterby (a town in Sweden) |
| Uses: |
Ceramics |
| Obtained From: |
Heavier rare earth minerals |
| Atomic Number: |
68 |
| Atomic Mass: |
167.26 amu |
| Melting Point: |
1522.0 °C (1795.15 °K, 2771.6 °F) |
| Boiling Point: |
2510.0 °C (2783.15 °K, 4550.0 °F) |
| Crystal Structure: |
Hexagonal |
| Density @ 293 K: |
8.795 g/cm3 |
| Color: |
Grayish |
Isotope |
Er-162 |
Er-164 |
Er-166 |
Er-167 |
Er-168 |
Er-169 |
Er-170 |
Er-171 |
Er-172 |
Half Life |
Stable |
Stable |
Stable |
Stable |
Stable |
9.4 days |
Stable |
7.5 hours |
2.1 days |
|
