Uran
92
U
Gruppe
I/T
Periode
7
Blokk
f
Protoner
Elektroner
Nøytroner
92
92
146
Generelle egenskaper
Atomnummer
92
Atomvekt
238,02891
Massetall
238
Kategori
Aktinoider
Farge
Sølv
Radioaktiv
Ja
Named after the planet Uranus
Krystallstruktur
Base Centered Orthorhombic
Historie
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.
Elektroner per energinivå
2, 8, 18, 32, 21, 9, 2
Elektronkonfigurasjon
[Rn] 5f3 6d1 7s2
Uranium-235 was the first isotope that was found to be fissile
Fysikalske egenskaper
Fase
Fast stoff
Tetthet
18,95 g/cm3
Smeltepunkt
1405,35 K | 1132,2 °C | 2069,96 °F
Kokepunkt
4404,15 K | 4131 °C | 7467,8 °F
Smeltevarme
14 kJ/mol
Fordampningsvarme
420 kJ/mol
Spesifikk varmekapasitet
0,116 J/g·K
Forekomst i jordskorpa
0,00018%
Forekomst i universet
2×10-8%
CAS Number
7440-61-1
PubChem CID Number
23989
Atomegenskaper
Atomradius
156 pm
Kovalent radius
196 pm
Elektronegativitet
1,38 (Pauling-skalaen)
Ioniseringsenergi
6,1941 eV
Molart volum
12,59 cm3/mol
Termisk ledningsevne
0,276 W/cm·K
Oksidasjonstilstander
3, 4, 5, 6
Bruksområder
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
Isotoper
Stabile isotoper
-Ustabile isotoper
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