Fm
Fermium
Qaybta 100 · 257.09511 u
Fermium waa qaybta ugu culus ee laga soo saari karo xadhig neutron.
Eeg astaamaha
| Atomic mass | 257.09511 u |
| Cidhiidhi | 9.7 g/cm³ |
| Natiijooyinka | 1800.0 K |
| Muuqaalka | Silvery metallic (la saadaaliyay) |
| Xaaladda heerkulka qolka | Cidhiidhi |
Eegista
| Electronegativity | 1.3 (Pauling) |
| 1st Ionization | 627.0 kJ/mol |
| Istaraatiijiyad | 33.96 kJ/mol |
| Nidaamka | +2, +3 |
_Cusub:
| Nidaamka | [Rn] 5f12 7s2 |
Dib u eegista
| La Ogaaday | Albert Ghiorso and others |
| Sannadka la helay | 1952 |
| _Meel | Berkeley, California, Maraykanka |
| Magacaabista | Enrico Fermi, hormuudka reactors nukliyeerka |
_Warbixinta Fermium
Fermium waxaa la helay oo la einsteinium in hydrogen bomb debris. Waa qaybta ugu culus ee soo saari kara by bombardment neutron. kaliya tiro yar oo la sameeyay.
Barnaamijyada
No codsiyada dhaqanka. cilmi baarista cilmiga ah oo kaliya.
Xaqiiqo xiiso leh
Fermium waa qaybta ugu culus ee laga soo saari karo duqeynta neutron. Wax kasta oo ka culus u baahan yahay in ay isku dhacaan nuclei oo isku xiran in acceleration.
Isotoobyo
| Tirada | Tirada | Half-Life | Xasiloon |
| 255 | - | 20.07 hours | Ha |
| 257 | - | 100.5 days | Ha |
Nidaamka
[Rn] 5f12 7s2