 |
| Date of Discovery: |
1879 |
| Discoverer: |
Paul Emile Lecoq de Boisbaudran |
| Name Origin: |
smarskite (mineral) |
| Uses: |
Used in magnets, in alloys with cobalt, and nuclear reactors |
| Obtained From: |
Found with other rare earths |
| Atomic Number: |
62 |
| Atomic Mass: |
150.36 amu |
| Melting Point: |
1072.0 °C (1345.15 °K, 1961.6 °F) |
| Boiling Point: |
1900.0 °C (2173.15 °K, 3452.0 °F) |
| Crystal Structure: |
Rhombohedral |
| Density @ 293 K: |
7.54 g/cm3 |
| Color: |
Silver |
Isotope |
Sm-144 |
Sm-145 |
Sm-146 |
Sm-147 |
Sm-148 |
Sm-149 |
Sm-150 |
Sm-151 |
Sm-152 |
Sm-153 |
Sm-154 |
Half Life |
Stable |
340.0 days |
1.03E8 years |
1.06E11 years |
7.0E15 years |
Stable |
Stable |
90.0 years |
Stable |
1.92 days |
Stable |
|
