Fermio
100
Fm
Grupo
Neniu
Perio
7
Bloko
f
Protonoj
Elektronoj
Neŭtronoj
100
100
157
Ĝeneralaj Propraĵoj
Atoma Nombro
100
Atommaso
[257]
Amasa Nombro
257
Kategorio
Aktinoidoj
Koloro
Neniu
Radioaktiva
Jes
Named after Nobel laureate Enrico Fermi, one of the pioneers of nuclear physics
Kristala Strukturo
Neniu
Historio
Fermium was discovered as a component of the debris of the first hydrogen bomb explosion in 1952.
It was identified by Albert Ghiorso and co-workers at the University of California, Berkeley in collaboration with the Argonne and Los Alamos National Laboratories, in the fallout from the Ivy Mike nuclear test.
The new element was produced by the nuclear fission of 17 neutrons with uranium-238.
It was identified by Albert Ghiorso and co-workers at the University of California, Berkeley in collaboration with the Argonne and Los Alamos National Laboratories, in the fallout from the Ivy Mike nuclear test.
The new element was produced by the nuclear fission of 17 neutrons with uranium-238.
Elektronoj per ŝelo
2, 8, 18, 32, 30, 8, 2
Elektrona Agordo
[Rn] 5f12 7s2
Sixteen isotopes of fermium are known to exist
Fizikaj Propraĵoj
Fazo
Solido
Denso
-
Fandpunkto
1800,15 K | 1527 °C | 2780,6 °F
Bolpunkto
-
Varmo de Fuzio
Neniu
Varmo de Vaporiĝo
Neniu
Specifa Varmo Kapacito
-
Krusta Abundo
Neniu
Universa Abundo
Neniu
Bildaj kreditoj: Wikimedia Commons (National Nuclear Security Administration)
Fermium was first observed in the fallout from the Ivy Mike nuclear test
CAS Nombro
7440-72-4
PubChem Kunmetita Identiga Nombro
Neniu
Atomaj Propraĵoj
Atoma Radiuso
-
Kovalenta Radiuso
-
Elektronegativeco
1,3 (Pauling-skalo)
Potencialo de jonigo
6,5 eV
Atoma Volumo
29,1 cm3/mol
Termika Kondukto
0,1 W/cm·K
Oksidaj Ŝtatoj
2, 3
Aplikoj
Fermium is used for scientific research purposes only.
Fermium is harmful due to its radioactivity
Izotopoj
Stabilaj Izotopoj
-Malstabilaj Isotopoj
241Fm, 242Fm, 243Fm, 244Fm, 245Fm, 246Fm, 247Fm, 248Fm, 249Fm, 250Fm, 251Fm, 252Fm, 253Fm, 254Fm, 255Fm, 256Fm, 257Fm, 258Fm, 259Fm, 260Fm