Fermiy
100
Fm
Guruh
Nomaʼlum
Davr
7
Block
f
Protonlar
Elektronlar
Neytronlar
100
100
157
General Properties
Atom raqami
100
Atom massasi
[257]
Mass Number
257
Turkum
Aktinoidlar
Ranggi
Nomaʼlum
Radioaktivlik
Ha
Named after Nobel laureate Enrico Fermi, one of the pioneers of nuclear physics
Crystal Structure
Nomaʼlum
Tarix
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.
Electrons per shell
2, 8, 18, 32, 30, 8, 2
Elektron konfiguratsiyasi
[Rn] 5f12 7s2
Sixteen isotopes of fermium are known to exist
Physical Properties
Phase
Qattiq modda
Zichlik
-
Erish harorati
1800,15 K | 1527 °C | 2780,6 °F
Qaynash harorati
-
Heat of Fusion
Nomaʼlum
Heat of Vaporization
Nomaʼlum
Solishtirma issiqlik sigʻimi
-
Abundance in Earth's crust
Nomaʼlum
Abundance in Universe
Nomaʼlum
Image Credits: Wikimedia Commons (National Nuclear Security Administration)
Fermium was first observed in the fallout from the Ivy Mike nuclear test
CAS Number
7440-72-4
PubChem CID Number
Nomaʼlum
Atomic Properties
Atom radiusi
-
Kovalentlik radiusi
-
Elektrmanfiylik
1,3 (Poling boʻyicha)
Ionization Potential
6,5 eV
Molyar hajm
29,1 cm3/mol
Issiqlik oʻtkazuvchanlik
0,1 W/cm·K
Oksidlanish darajasi
2, 3
Applications
Fermium is used for scientific research purposes only.
Fermium is harmful due to its radioactivity
Izotoplar
Barqaror izotoplar
-Beqaror izotoplar
241Fm, 242Fm, 243Fm, 244Fm, 245Fm, 246Fm, 247Fm, 248Fm, 249Fm, 250Fm, 251Fm, 252Fm, 253Fm, 254Fm, 255Fm, 256Fm, 257Fm, 258Fm, 259Fm, 260Fm