Fermium
100
Fm
Groep
n/a
Periode
7
Blok
f
Protrone
Elektrone
Neutrone
100
100
157
Algemene Eienskappe
Atoom Nommer
100
Atoommassa
[257]
Massa Nommer
257
Kategorie
Aktiniede
Kleur
n/a
Radioaktief
Ja
Named after Nobel laureate Enrico Fermi, one of the pioneers of nuclear physics
Kristalstruktuur
n/a
Geskiendenis
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.
Elektrone per skil
2, 8, 18, 32, 30, 8, 2
Elektronkonfigurasie
[Rn] 5f12 7s2
Sixteen isotopes of fermium are known to exist
Fisiese Eienskappe
Fase
Soliede
Digtheid
-
Smeltpunt
1800,15 K | 1527 °C | 2780,6 °F
Kookpunt
-
Heat of Fusion
n/a
Heat of Vaporization
n/a
Spesifieke Hitte Kapasiteit
-
Oorvloed in die aardkors
n/a
Oorvloed in die heelal
n/a
Beeld Krediete: Wikimedia Commons (National Nuclear Security Administration)
Fermium was first observed in the fallout from the Ivy Mike nuclear test
CAS Nommer
7440-72-4
PubChem CID Nommer
n/a
Atomiese Eienskappe
Atoom radius
-
Kovalente Radius
-
Elektronegatiewiteit
1,3 (Pauling scale)
Ionisasie potensiaal
6,5 eV
Atoom volume
29,1 cm3/mol
Termiese geleidingsvermoë
0,1 W/cm·K
Oksidasiestate
2, 3
Toepassings
Fermium is used for scientific research purposes only.
Fermium is harmful due to its radioactivity
Isotope
Stabiele Isotope
-Onstabiele Isotope
241Fm, 242Fm, 243Fm, 244Fm, 245Fm, 246Fm, 247Fm, 248Fm, 249Fm, 250Fm, 251Fm, 252Fm, 253Fm, 254Fm, 255Fm, 256Fm, 257Fm, 258Fm, 259Fm, 260Fm