Uranij
92
U
Skupina
n/a
Perioda
7
Blok
f
Protoni
Elektroni
Neutroni
92
92
146
Opća svojstva
Atomski broj
92
Relativna atomska masa
238,02891
Maseni broj
238
Kategorija
Aktinoidi
Boja
Srebrna
Radioaktivan
Da
Imenovan po planetu Uranu
Kristalna struktura
Bazno centrirana ortorombična
Povijest
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.
Elektrona po ljusci
2, 8, 18, 32, 21, 9, 2
Elektronska konfiguracija
[Rn] 5f3 6d1 7s2
Uranium-235 was the first isotope that was found to be fissile
Fizikalna svojstva
Agregacijsko stanje
Čvrsto
Gustoća
18,95 g/cm3
Talište
1405,35 K | 1132,2 °C | 2069,96 °F
Vrelište
4404,15 K | 4131 °C | 7467,8 °F
Toplina taljenja
14 kJ/mol
Toplina isparavanja
420 kJ/mol
Specifični toplinski kapacitet
0,116 J/g·K
Zastupljenost u Zemljinoj kori
0,00018%
Zastupljenost u svemiru
2×10-8%
CAS broj
7440-61-1
PubChem CID broj
23989
Atomska svojstva
Atomski radijus
156 pm
Kovalentni radijus
196 pm
Elektronegativnost
1,38 (Paulingova ljestvica)
Potencijal ionizacije
6,1941 eV
Atomski volumen
12,59 cm3/mol
Toplinska vodljivost
0,276 W/cm·K
Stanja oksidacije
3, 4, 5, 6
Primjene
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