Uran
92
U
Skupina
n/p
Perioda
7
Blok
f
Protoni
Elektroni
Nevtroni
92
92
146
Splošne lastnosti
Vrstno število
92
Atomska teža
238,02891
Masno število
238
Kategorija
Aktinoidi
Barva
Srebrna
Radioaktivno
Da
Named after the planet Uranus
Kristalna struktura
Osnovno centrirana ortorombska
Zgodovina
Uranium was discovered in 1789 by the German chemist Martin Heinrich Klaproth.
In 1841, Eugène-Melchior Péligot isolated the first sample of uranium metal by heating uranium tetrachloride with potassium.
Antoine Henri Becquerel discovered radioactivity by using uranium in 1896.
In 1841, Eugène-Melchior Péligot isolated the first sample of uranium metal by heating uranium tetrachloride with potassium.
Antoine Henri Becquerel discovered radioactivity by using uranium in 1896.
Elektroni po lupinah
2, 8, 18, 32, 21, 9, 2
Razporeditev elektronov
[Rn] 5f3 6d1 7s2
Uranium-235 was the first isotope that was found to be fissile
Fizikalne lastnosti
Faza snovi
Trdnina
Gostota
18,95 g/cm3
Tališče
1405,35 K | 1132,2 °C | 2069,96 °F
Vrelišče
4404,15 K | 4131 °C | 7467,8 °F
Talilna toplota
14 kJ/mol
Izparilna toplota
420 kJ/mol
Toplotna kapaciteta
0,116 J/g·K
Zastopanost v Zemljini skorji
0,00018%
Zastopanost v vesolju
2×10-8%
CAS številka
7440-61-1
PubChem CID številka
23989
Atomske lastnosti
Atomski polmer
156 pm
Kovalentni polmer
196 pm
Elektronegativnost
1,38 (Paulingova lestvica)
Ionizacijski potencial
6,1941 eV
Atomski volumen
12,59 cm3/mol
Toplotna prevodnost
0,276 W/cm·K
Oksidacijska stanja
3, 4, 5, 6
Uporabe
Uranium is used as fuel for nuclear power plants.
Uranium is used as a colorant in uranium glass, producing orange-red to lemon yellow hues.
It was also used for tinting and shading in early photography.
The major application of uranium in the military sector is in high-density penetrators.
Uranium is used as a colorant in uranium glass, producing orange-red to lemon yellow hues.
It was also used for tinting and shading in early photography.
The major application of uranium in the military sector is in high-density penetrators.
Uranium is toxic and highly radioactive
Izotopi
Stabilni izotopi
-Nestabilni izotopi
215U, 216U, 217U, 218U, 219U, 220U, 221U, 222U, 223U, 224U, 225U, 226U, 227U, 228U, 229U, 230U, 231U, 232U, 233U, 234U, 235U, 236U, 237U, 238U, 239U, 240U, 241U, 242U