Uraani
92
U
Ryhmä
Ei saatavilla
Jakso
7
Lohko
f
Protonia
Elektronit
Neutronia
92
92
146
Yleiset ominaisuudet
Järjestysluku
92
Atomipaino
238,02891
Massaluku
238
Luokka
Aktinoidit
Väri
Hopea
Radioaktiivisuus
Kyllä
Named after the planet Uranus
Kiderakenne
Päätepintakeskinen rombinen
Historia
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.
Elektroneja elektronikuorilla
2, 8, 18, 32, 21, 9, 2
Orbitaalirakenne
[Rn] 5f3 6d1 7s2
Uranium-235 was the first isotope that was found to be fissile
Fyysiset ominaisuudet
Olomuoto
Kiinteä
Tiheys
18,95 g/cm3
Sulamispiste
1405,35 K | 1132,2 °C | 2069,96 °F
Kiehumispiste
4404,15 K | 4131 °C | 7467,8 °F
Sulamislämpö
14 kJ/mol
Höyrystymislämpö
420 kJ/mol
Ominaislämpökapasiteetti
0,116 J/g·K
Esiintyvyys maankuoressa
0,00018%
Esiintyvyys maailmankaikkeudessa
2×10-8%
CAS-numero
7440-61-1
PubChem CID-numero
23989
Atomiominaisuudet
Atomisäde
156 pm
Kovalenttisäde
196 pm
Elektronegatiivisuus
1,38 (Paulingin asteikko)
Ionisoitumispotentiaali
6,1941 eV
Moolitilavuus
12,59 cm3/mol
Lämmönjohtavuus
0,276 W/cm·K
Hapetusluvut
3, 4, 5, 6
Käyttö
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
Isotooppi
Vakaat isotoopit
-Epävakaat isotoopit
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