Uran

Uran (U)

radioaktivt metalliskt grundämne med atomnummer 92
Atomnummer92
Atommassa238.02891
masstal238
Grupp
Period7
Blockf
Protoner92 p+
Neutroner146 n0
Electrons92 e-
Animated Bohrs atommodell of U (Uran)

Egenskaper

atomradie
175 pm
molvolym
kovalent radie
170 pm
Metallic Radius
ionic radius
102,5 pm
Crystal Radius
116,5 pm
Van der Waalsradie
241 pm
densitet
19,1 g/cm³
energi
proton affinity
995,2 kJ/mol
Elektronaffinitet
joniseringsenergi
6,19405 eV/particle
joniseringsenergi of U (Uran)
ångbildningsvärme
417 kJ/mol
smältvärme
12,6 kJ/mol
Bildningsentalpi
533 kJ/mol
Electrons
electron shell2, 8, 18, 32, 21, 9, 2
Bohrs atommodell: U (Uran)
valenselektron2
Elektronformel: U (Uran)
elektronkonfiguration[Rn] 5f3 6d1 7s2
Enhanced Bohrs atommodell of U (Uran)
Orbital Diagram of U (Uran)
oxidationstal-1, 1, 2, 3, 4, 5, 6
elektronegativitet
1.7
Electrophilicity
Phases
aggregationstillståndFast
Gas Phase
Kokpunkt
4 404,15 K
Smältpunkt
1 408,15 K
critical pressure
critical temperature
trippelpunkt
Visual
färg
Silver
appearance
Brytningsindex
materialegenskap
Värmeledningsförmåga
27,5 W/(m K)
termisk expansion
0,0000139 1/K
molar heat capacity
27,665 J/(mol K)
Specifik värmekapacitet
0,116 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
elektrisk konduktivitet
3,6 MS/m
resistivitet
0,00000028 m Ω
supraledare
0,69 K
magnetism
typeparamagnetic
magnetisk susceptibilitet (Mass)
0,0000000216 m³/Kg
magnetisk susceptibilitet (Molar)
0,00000000514 m³/mol
magnetisk susceptibilitet (Volume)
0,000411
magnetic ordering
Curiepunkten
Néel temperature
Structure
KristallstrukturBascentrerat ortorombiskt (ORC)
Gitterkonstant
2,85 Å
Lattice Anglesπ/2, π/2, π/2
mekanisk materialegenskap
hårdhet
6 MPa
Kompressibilitet
100 GPa
skjuvmodul
111 GPa
Young's modulus
208 GPa
Poissons konstant
0,23
ljudhastighet
3 155 m/s
klassificering
KategoriAktinider, Actinides
CAS Group
IUPAC Group
Glawe Number36
Mendeleev Number20
Pettifor Number45
Geochemical Classrare earth & related
Goldschmidt classificationlitophile
övrigt
Gas Basicity
973,2 kJ/mol
Dipole Polarizability
129 ± 17 a₀
C6 Dispersion Coefficient
Allotropes
Träffyta
7,57
Neutron Mass Absorption
0,0005
kvanttal5L6
rymdgrupp63 (Cmcm)

Uranisotoper

Stabila isotoper3
Instabila isotoper26
Radioactive Isotopes29

215U

natural abundanceRadioactive ☢️
relative atomic mass
215,026719774 ± 0,000111794 Da
masstal215
g-factor
Halveringstid
1,4 ± 0,9 ms
Spinn5/2
nuclear quadrupole moment
upptäcktsdatum2015
Paritet-

215U Decay Modes
decay modeIntensitet
α (α emission)%
β+ (β+ decay; β+ = ϵ + e+)%

216U

natural abundanceRadioactive ☢️
relative atomic mass
216,024762829 ± 0,000030158 Da
masstal216
g-factor
0
Halveringstid
6,9 ± 2,9 ms
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum2015
Paritet+

216U Decay Modes
decay modeIntensitet
α (α emission)100%

217U

natural abundanceRadioactive ☢️
relative atomic mass
217,02466 ± 0,000086 Da
masstal217
g-factor
Halveringstid
850 ± 710 us
Spinn1/2
nuclear quadrupole moment
0
upptäcktsdatum2000
Paritet-

217U Decay Modes
decay modeIntensitet
α (α emission)100%
β (β decay)%

218U

natural abundanceRadioactive ☢️
relative atomic mass
218,023504877 ± 0,000014722 Da
masstal218
g-factor
0
Halveringstid
354 ± 91 us
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum1992
Paritet+

218U Decay Modes
decay modeIntensitet
α (α emission)100%

219U

natural abundanceRadioactive ☢️
relative atomic mass
219,025009233 ± 0,000014319 Da
masstal219
g-factor
Halveringstid
60 ± 7 us
Spinn9/2
nuclear quadrupole moment
upptäcktsdatum1993
Paritet+

219U Decay Modes
decay modeIntensitet
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)%

220U

natural abundanceRadioactive ☢️
relative atomic mass
220,024706 ± 0,000108 Da
masstal220
g-factor
0
Halveringstid
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum
Paritet+

220U Decay Modes
decay modeIntensitet
α (α emission)%
β+ (β+ decay; β+ = ϵ + e+)%

221U

natural abundanceRadioactive ☢️
relative atomic mass
221,026323297 ± 0,00007744 Da
masstal221
g-factor
Halveringstid
660 ± 140 ns
Spinn9/2
nuclear quadrupole moment
upptäcktsdatum2015
Paritet+

221U Decay Modes
decay modeIntensitet
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)%

222U

natural abundanceRadioactive ☢️
relative atomic mass
222,026057957 ± 0,000055817 Da
masstal222
g-factor
0
Halveringstid
4,7 ± 0,7 us
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum1983
Paritet+

222U Decay Modes
decay modeIntensitet
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)%

223U

natural abundanceRadioactive ☢️
relative atomic mass
223,027960754 ± 0,000063396 Da
masstal223
g-factor
Halveringstid
65 ± 12 us
Spinn7/2
nuclear quadrupole moment
upptäcktsdatum1991
Paritet+

223U Decay Modes
decay modeIntensitet
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)%

224U

natural abundanceRadioactive ☢️
relative atomic mass
224,027635913 ± 0,000016383 Da
masstal224
g-factor
0
Halveringstid
396 ± 17 us
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum1991
Paritet+

224U Decay Modes
decay modeIntensitet
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)%

225U

natural abundanceRadioactive ☢️
relative atomic mass
225,02938505 ± 0,000010664 Da
masstal225
g-factor
Halveringstid
62 ± 4 ms
Spinn5/2
nuclear quadrupole moment
upptäcktsdatum1989
Paritet+

225U Decay Modes
decay modeIntensitet
α (α emission)100%

226U

natural abundanceRadioactive ☢️
relative atomic mass
226,029338669 ± 0,000011884 Da
masstal226
g-factor
0
Halveringstid
269 ± 6 ms
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum1973
Paritet+

226U Decay Modes
decay modeIntensitet
α (α emission)100%

227U

natural abundanceRadioactive ☢️
relative atomic mass
227,031181124 ± 0,000009136 Da
masstal227
g-factor
Halveringstid
1,1 ± 0,1 m
Spinn3/2
nuclear quadrupole moment
upptäcktsdatum1952
Paritet+

227U Decay Modes
decay modeIntensitet
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)%

228U

natural abundanceRadioactive ☢️
relative atomic mass
228,031368959 ± 0,000014465 Da
masstal228
g-factor
0
Halveringstid
9,1 ± 0,2 m
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum1949
Paritet+

228U Decay Modes
decay modeIntensitet
α (α emission)97.5%
ϵ (electron capture)2.5%

229U

natural abundanceRadioactive ☢️
relative atomic mass
229,033505976 ± 0,000006374 Da
masstal229
g-factor
Halveringstid
57,8 ± 0,5 m
Spinn3/2
nuclear quadrupole moment
upptäcktsdatum1949
Paritet+

229U Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)80%
α (α emission)20%

230U

natural abundanceRadioactive ☢️
relative atomic mass
230,033940114 ± 0,000004841 Da
masstal230
g-factor
0
Halveringstid
20,23 ± 0,02 d
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum1948
Paritet+

230U Decay Modes
decay modeIntensitet
α (α emission)100%
22Ne4.8%
SF (spontaneous fission)%

231U

natural abundanceRadioactive ☢️
relative atomic mass
231,03629218 ± 0,000002866 Da
masstal231
g-factor
Halveringstid
4,2 ± 0,1 d
Spinn5/2
nuclear quadrupole moment
upptäcktsdatum1949
Paritet+

231U Decay Modes
decay modeIntensitet
ϵ (electron capture)100%
α (α emission)0.004%

232U

natural abundanceRadioactive ☢️
relative atomic mass
232,037154765 ± 0,000001941 Da
masstal232
g-factor
0
Halveringstid
68,9 ± 0,4 y
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum1949
Paritet+

232U Decay Modes
decay modeIntensitet
α (α emission)100%
24Ne (heavy cluster emission)8.9%
SF (spontaneous fission)2.7%
28Mg5%

233U

natural abundanceRadioactive ☢️
relative atomic mass
233,039634294 ± 0,00000242 Da
masstal233
g-factor
−0,236 ± 0,02
Halveringstid
159,19 ± 0,15 ky
Spinn5/2
nuclear quadrupole moment
3,663 ± 0,008
upptäcktsdatum1947
Paritet+

233U Decay Modes
decay modeIntensitet
α (α emission)100%
SF (spontaneous fission)6%
24Ne (heavy cluster emission)7.2%
28Mg1.3%

234U

natural abundanceRadioactive ☢️
0,0054 ± 0,0005
relative atomic mass
234,040950296 ± 0,000001212 Da
masstal234
g-factor
0
Halveringstid
245,5 ± 0,6 ky
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum1912
Paritet+

234U Decay Modes
decay modeIntensitet
α (α emission)100%
SF (spontaneous fission)1.64%
28Mg1.4%
26Ne9%

235U

natural abundanceRadioactive ☢️
0,7204 ± 0,0006
relative atomic mass
235,043928117 ± 0,000001198 Da
masstal235
g-factor
−0,10857142857143 ± 0,0085714285714286
Halveringstid
704 ± 1 My
Spinn7/2
nuclear quadrupole moment
4,936 ± 0,006
upptäcktsdatum1935
Paritet-

235U Decay Modes
decay modeIntensitet
α (α emission)100%
SF (spontaneous fission)7%
20Ne8%
25Ne8%
28Mg8%

236U

natural abundanceRadioactive ☢️
relative atomic mass
236,04556613 ± 0,000001193 Da
masstal236
g-factor
0
Halveringstid
23,42 ± 0,04 My
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum1951
Paritet+

236U Decay Modes
decay modeIntensitet
α (α emission)100%
SF (spontaneous fission)9.4%

237U

natural abundanceRadioactive ☢️
relative atomic mass
237,048728309 ± 0,00000129 Da
masstal237
g-factor
Halveringstid
6,752 ± 0,002 d
Spinn1/2
nuclear quadrupole moment
0
upptäcktsdatum1940
Paritet+

237U Decay Modes
decay modeIntensitet
β (β decay)100%

238U

natural abundanceRadioactive ☢️
99,2742 ± 0,001
relative atomic mass
238,050786936 ± 0,000001601 Da
masstal238
g-factor
0
Halveringstid
4,463 ± 0,003 Gy
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum1896
Paritet+

238U Decay Modes
decay modeIntensitet
α (α emission)100%
SF (spontaneous fission)5.44%
(double β decay)2.2%

239U

natural abundanceRadioactive ☢️
relative atomic mass
239,054291989 ± 0,000001612 Da
masstal239
g-factor
Halveringstid
23,45 ± 0,02 m
Spinn5/2
nuclear quadrupole moment
upptäcktsdatum1937
Paritet+

239U Decay Modes
decay modeIntensitet
β (β decay)100%

240U

natural abundanceRadioactive ☢️
relative atomic mass
240,056592411 ± 0,00000274 Da
masstal240
g-factor
0
Halveringstid
14,1 ± 0,1 h
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum1953
Paritet+

240U Decay Modes
decay modeIntensitet
β (β decay)100%
α (α emission)%

241U

natural abundanceRadioactive ☢️
relative atomic mass
241,06033 ± 0,00021 Da
masstal241
g-factor
Halveringstid
Spinn7/2
nuclear quadrupole moment
upptäcktsdatum
Paritet+

241U Decay Modes
decay modeIntensitet
β (β decay)%

242U

natural abundanceRadioactive ☢️
relative atomic mass
242,062931 ± 0,000215 Da
masstal242
g-factor
0
Halveringstid
16,8 ± 0,5 m
Spinn0
nuclear quadrupole moment
0
upptäcktsdatum1979
Paritet+

242U Decay Modes
decay modeIntensitet
β (β decay)100%

243U

natural abundanceRadioactive ☢️
relative atomic mass
243,067075 ± 0,000322 Da
masstal243
g-factor
Halveringstid
Spinn9/2
nuclear quadrupole moment
upptäcktsdatum
Paritet-

243U Decay Modes
decay modeIntensitet
β (β decay)%
Uranium2.jpg

historia

upptäckare eller uppfinnareMartin Klaproth
fyndplatsGermany
upptäcktsdatum1789
etymologiNamed for the planet Uranus.
uttalyoo-RAY-ni-em (engelska)

Sources

Förekomst
Abundance in Earth's crust
2,7 mg/kg
Abundance in Oceans
0,0032 mg/L
Abundance in Human Body
0,0000001 %
Abundance in Meteor
0,00000098 %
Abundance in Sun
0,0000001 %
Abundance in Universe
0,00000002 %

Nuclear Screening Constants