 |
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 |
|