Einsteinium
99
Es
Ryhmä
Ei saatavilla
Jakso
7
Lohko
f
Protonia
Elektronit
Neutronia
99
99
153
Yleiset ominaisuudet
Järjestysluku
99
Atomipaino
[252]
Massaluku
252
Luokka
Aktinoidit
Väri
Ei saatavilla
Radioaktiivisuus
Kyllä
Named after Albert Einstein
Kiderakenne
Ei saatavilla
Historia
Einsteinium 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 explosion in miniscule amounts by the addition of 15 neutrons to 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 explosion in miniscule amounts by the addition of 15 neutrons to uranium-238.
Elektroneja elektronikuorilla
2, 8, 18, 32, 29, 8, 2
Orbitaalirakenne
[Rn] 5f11 7s2
Einsteinium is the first divalent metal in the actinide series
Fyysiset ominaisuudet
Olomuoto
Kiinteä
Tiheys
8,84 g/cm3
Sulamispiste
1133,15 K | 860 °C | 1580 °F
Kiehumispiste
-
Sulamislämpö
Ei saatavilla
Höyrystymislämpö
Ei saatavilla
Ominaislämpökapasiteetti
-
Esiintyvyys maankuoressa
Ei saatavilla
Esiintyvyys maailmankaikkeudessa
Ei saatavilla
Kuvalähteet: Wikimedia Commons (National Nuclear Security Administration)
Einsteinium was first observed in the fallout from the Ivy Mike nuclear test
CAS-numero
7429-92-7
PubChem CID-numero
Ei saatavilla
Atomiominaisuudet
Atomisäde
-
Kovalenttisäde
-
Elektronegatiivisuus
1,3 (Paulingin asteikko)
Ionisoitumispotentiaali
6,42 eV
Moolitilavuus
28,5 cm3/mol
Lämmönjohtavuus
0,1 W/cm·K
Hapetusluvut
2, 3
Käyttö
Einsteinium is mainly used for scientific research purposes.
The rare isotope einsteinium-254 is favored for production of ultraheavy elements.
Einsteinium-254 was used as the calibration marker in the chemical analysis spectrometer of the Surveyor 5 lunar probe.
The rare isotope einsteinium-254 is favored for production of ultraheavy elements.
Einsteinium-254 was used as the calibration marker in the chemical analysis spectrometer of the Surveyor 5 lunar probe.
Einsteinium is harmful due to its radioactivity
Isotooppi
Vakaat isotoopit
-Epävakaat isotoopit
240Es, 241Es, 242Es, 243Es, 244Es, 245Es, 246Es, 247Es, 248Es, 249Es, 250Es, 251Es, 252Es, 253Es, 254Es, 255Es, 256Es, 257Es, 258Es