Einsteinium

99
Es
Kumpulan
Tiada
Kala
7
Blok
f
Proton
Elektron
Neutron
99
99
153
Ciri-Ciri Am
Nombor atom
99
Berat atom
[252]
Nombor jisim
252
Kategori
Aktinid
Warna
Tiada
Radioaktif
Ya
Named after Albert Einstein
Struktur hablur
Tiada
Sejarah
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.
Bilangan elektron per petala
2, 8, 18, 32, 29, 8, 2
Konfigurasi elektron
[Rn] 5f11 7s2
Es
Einsteinium is the first divalent metal in the actinide series
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
8.84 g/cm3
Takat lebur
1133.15 K | 860 °C | 1580 °F
Takat didih
-
Haba pelakuran
Tiada
Haba pengewapan
Tiada
Muatan haba molar
-
Banyak pada kerak bumi
Tiada
Banyak pada alam semesta
Tiada
Einsteinium
Kredit imej: Wikimedia Commons (National Nuclear Security Administration)
Einsteinium was first observed in the fallout from the Ivy Mike nuclear test
Nombor CAS
7429-92-7
PubChem CID Number
Tiada
Ciri-Ciri Atom
Jejari atom
-
Jejari kovalen
-
Keelektronegatifan
1.3 (Skala Pauling)
Kebolehan mengion
6.42 eV
Isipadu atom
28.5 cm3/mol
Daya pengaliran terma
0.1 W/cm·K
Keadaan pengoksidaan
2, 3
Aplikasi
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.
Einsteinium is harmful due to its radioactivity
Isotop
Isotop stabil
-
Isotop tidak stabil
240Es, 241Es, 242Es, 243Es, 244Es, 245Es, 246Es, 247Es, 248Es, 249Es, 250Es, 251Es, 252Es, 253Es, 254Es, 255Es, 256Es, 257Es, 258Es