Uran
92
U
Skupina
n/a
Perioda
7
Blok
f
Protons
Electrons
Neutrons
92
92
146
General Properties
Vrstno število
92
Atomska teža
238,02891
Mass Number
238
Kategorija
Aktinoidi
Barva
Silver
Radioactive
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.
Electrons per shell
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
Physical Properties
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
Abundance in Earth's crust
0,00018%
Abundance in Universe
2×10-8%
CAS Number
7440-61-1
PubChem CID Number
23989
Atomic Properties
Atomski polmer
156 pm
Kovalentni polmer
196 pm
Elektronegativnost
1,38 (Paulingova lestvica)
Ionization Potential
6,1941 eV
Atomic Volume
12,59 cm3/mol
Toplotna prevodnost
0,276 W/cm·K
Oksidacijska stanja
3, 4, 5, 6
Applications
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
Isotopes
Stable Isotopes
-Unstable Isotopes
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