| Fermium [Fm] (CAS-ID: 7440-72-4) | |
| An: 100 N: 157 Am: [ 257 ] g/mol | |
| Group Name: Actinoid | |
| Block: f-block Period: 7 (actinoid) | |
| State: presumably a solid at 298 K | |
| Colour: unknown, but probably metallic and silvery white or grey in appearance Classification: Metallic | |
| Boiling Point: unknown (?) | |
| Melting Point: 1800K (1527'C) | |
| Density: unknown | |
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|
 Discovery Information
|
| Who: A. Ghiorso, A: Los Alamos, U of California |
| When: 1953 |
| Where: United States |
| Name Origin
|
| After the scientist Enrico Fermi. |
| Sources
|
| Completely synthetic element. Produced by bombarding lighter transuranium elements with still lighter particles or by neutron capture. |
| Uses
|
| None. |
| Notes
|
| Fermium's chemical properties are largely unknown. Fermium is a radioactive rare earth metal. The longest living isotope is 257Fm with a half-life of 80 days. It is of no commercial importance. |