Urani

Urani (U)

radioactive, metallic element with the atomic number 92
Atomic Number92
Atomic Weight238.02891
mass number238
Group
Period7
Blockf
proton92 p+
neutron146 n0
electron92 e-
Animated Bohr model of U (Urani)

Proprietat Fisica

Rai Atomic
175 pm
molar volume
covalent radius
170 pm
Metallic Radius
ionic radius
102.5 pm
Crystal Radius
116.5 pm
Rai de van der Waals
241 pm
densitat
19.1 g/cm³
Atomic Radii Of The Elements: Urani0102030405060708090100110120130140150160170180190200210220230240250pmRai AtomicCovalent RadiusMetallic RadiusRai de van der Waals

Chemical Property

energia
proton affinity
995.2 kJ/mol
electron affinity
ionization energy
6.19405 eV/particle
ionization energy of U (Urani)
enthalpy of vaporization
417 kJ/mol
enthalpy of fusion
12.6 kJ/mol
standard enthalpy of formation
533 kJ/mol
electron
electron shell2, 8, 18, 32, 21, 9, 2
Bohr model: U (Urani)
valence electron2
Lewis structure: U (Urani)
electron configuration[Rn] 5f3 6d1 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f3 6d1 7s2
Enhanced Bohr model of U (Urani)
Orbital Diagram of U (Urani)
oxidation number-1, 1, 2, 3, 4, 5, 6
Electronegativitat
1.7
Electrophilicity Index
fundamental state of matter
estat de la matèriaSolid
gaseous state of matter
Boiling Point
4404.15 K
Melting Point
1408.15 K
critical pressure
critical temperature
Ponch triple
appearance
Color
Silver
appearance
Indici de refraccion
thermodynamic material property
Thermal Conductivity
27.5 W/(m K)
thermal expansion
0.0000139 1/K
molar heat capacity
27.665 J/(mol K)
Specific Heat Capacity
0.116 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
3.6 MS/m
electrical resistivity
0.00000028 m Ω
superconductivity
0.69 K
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0.0000000216 m³/Kg
magnetic susceptibility (Molar)
0.00000000514 m³/mol
magnetic susceptibility (Volume)
0.000411
magnetic ordering
Curie temperature
Néel temperature
estructura
Crystal StructureBase Centered Orthorhombic (ORC)
lattice constant
2.85 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
Duretat
6 MPa
bulk modulus
100 GPa
shear modulus
111 GPa
Young's modulus
208 GPa
Poisson's ratio
0.23
speed of sound
3155 m/s
classification
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number36
Mendeleev Number20
Pettifor Number45
Geochemical Classrare earth & related
Goldschmidt classificationlitophile

other

Gas Basicity
973.2 kJ/mol
polarizability
129 ± 17 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
7.57
Neutron Mass Absorption
0.0005
quantum number5L6
space group63 (Cmcm)

Isotopes of Uranium

Stable Isotopes0
Unstable Isotopes29
Natural Isotopes3
Isotopic Composition23899.27%23899.27%2340.01%2340.01%2350.72%2350.72%

215U

mass number215
neutron number123
relative atomic mass
215.026719774 ± 0.000111794 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
1.4 ± 0.9 ms
Espin5/2
nuclear quadrupole moment
data de descobèrta2015
parity-

decay modeintensity
α (α emission)
β+ (β+ decay; β+ = ϵ + e+)

216U

mass number216
neutron number124
relative atomic mass
216.024762829 ± 0.000030158 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
6.9 ± 2.9 ms
Espin0
nuclear quadrupole moment
0
data de descobèrta2015
parity+

decay modeintensity
α (α emission)100%

217U

mass number217
neutron number125
relative atomic mass
217.02466 ± 0.000086 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
850 ± 710 us
Espin1/2
nuclear quadrupole moment
0
data de descobèrta2000
parity-

decay modeintensity
α (α emission)100%
β (β decay)

218U

mass number218
neutron number126
relative atomic mass
218.023504877 ± 0.000014722 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
354 ± 91 us
Espin0
nuclear quadrupole moment
0
data de descobèrta1992
parity+

decay modeintensity
α (α emission)100%

219U

mass number219
neutron number127
relative atomic mass
219.025009233 ± 0.000014319 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
60 ± 7 us
Espin9/2
nuclear quadrupole moment
data de descobèrta1993
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

220U

mass number220
neutron number128
relative atomic mass
220.024706 ± 0.000108 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin0
nuclear quadrupole moment
0
data de descobèrta
parity+

decay modeintensity
α (α emission)
β+ (β+ decay; β+ = ϵ + e+)

221U

mass number221
neutron number129
relative atomic mass
221.026323297 ± 0.00007744 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
660 ± 140 ns
Espin9/2
nuclear quadrupole moment
data de descobèrta2015
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

222U

mass number222
neutron number130
relative atomic mass
222.026057957 ± 0.000055817 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
4.7 ± 0.7 us
Espin0
nuclear quadrupole moment
0
data de descobèrta1983
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

223U

mass number223
neutron number131
relative atomic mass
223.027960754 ± 0.000063396 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
65 ± 12 us
Espin7/2
nuclear quadrupole moment
data de descobèrta1991
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

224U

mass number224
neutron number132
relative atomic mass
224.027635913 ± 0.000016383 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
396 ± 17 us
Espin0
nuclear quadrupole moment
0
data de descobèrta1991
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

225U

mass number225
neutron number133
relative atomic mass
225.02938505 ± 0.000010664 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
62 ± 4 ms
Espin5/2
nuclear quadrupole moment
data de descobèrta1989
parity+

decay modeintensity
α (α emission)100%

226U

mass number226
neutron number134
relative atomic mass
226.029338669 ± 0.000011884 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
269 ± 6 ms
Espin0
nuclear quadrupole moment
0
data de descobèrta1973
parity+

decay modeintensity
α (α emission)100%

227U

mass number227
neutron number135
relative atomic mass
227.031181124 ± 0.000009136 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
1.1 ± 0.1 m
Espin3/2
nuclear quadrupole moment
data de descobèrta1952
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

228U

mass number228
neutron number136
relative atomic mass
228.031368959 ± 0.000014465 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
9.1 ± 0.2 m
Espin0
nuclear quadrupole moment
0
data de descobèrta1949
parity+

decay modeintensity
α (α emission)97.5%
ϵ (electron capture)2.5%

229U

mass number229
neutron number137
relative atomic mass
229.033505976 ± 0.000006374 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
57.8 ± 0.5 m
Espin3/2
nuclear quadrupole moment
data de descobèrta1949
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)80%
α (α emission)20%

230U

mass number230
neutron number138
relative atomic mass
230.033940114 ± 0.000004841 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
20.23 ± 0.02 d
Espin0
nuclear quadrupole moment
0
data de descobèrta1948
parity+

decay modeintensity
α (α emission)100%
22Ne4.8%
SF (spontaneous fission)

231U

mass number231
neutron number139
relative atomic mass
231.03629218 ± 0.000002866 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
4.2 ± 0.1 d
Espin5/2
nuclear quadrupole moment
data de descobèrta1949
parity+

decay modeintensity
ϵ (electron capture)100%
α (α emission)0.004%

232U

mass number232
neutron number140
relative atomic mass
232.037154765 ± 0.000001941 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
68.9 ± 0.4 y
Espin0
nuclear quadrupole moment
0
data de descobèrta1949
parity+

decay modeintensity
α (α emission)100%
24Ne (heavy cluster emission)8.9%
SF (spontaneous fission)2.7%
28Mg5%

233U

mass number233
neutron number141
relative atomic mass
233.039634294 ± 0.00000242 Da
g-factor
-0.236 ± 0.02
natural abundance
Radioactivitat☢️ radioactive element
Semivida
159.19 ± 0.15 ky
Espin5/2
nuclear quadrupole moment
3.663 ± 0.008
data de descobèrta1947
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)6%
24Ne (heavy cluster emission)7.2%
28Mg1.3%

234U

mass number234
neutron number142
relative atomic mass
234.040950296 ± 0.000001212 Da
g-factor
0
natural abundance
0.0054 ± 0.0005
Radioactivitat☢️ radioactive element
Semivida
245.5 ± 0.6 ky
Espin0
nuclear quadrupole moment
0
data de descobèrta1912
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)1.64%
28Mg1.4%
26Ne9%

235U

mass number235
neutron number143
relative atomic mass
235.043928117 ± 0.000001198 Da
g-factor
-0.10857142857143 ± 0.0085714285714286
natural abundance
0.7204 ± 0.0006
Radioactivitat☢️ radioactive element
Semivida
704 ± 1 My
Espin7/2
nuclear quadrupole moment
4.936 ± 0.006
data de descobèrta1935
parity-

decay modeintensity
α (α emission)100%
SF (spontaneous fission)7%
20Ne8%
25Ne8%
28Mg8%

236U

mass number236
neutron number144
relative atomic mass
236.04556613 ± 0.000001193 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
23.42 ± 0.04 My
Espin0
nuclear quadrupole moment
0
data de descobèrta1951
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)9.4%

237U

mass number237
neutron number145
relative atomic mass
237.048728309 ± 0.00000129 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
6.752 ± 0.002 d
Espin1/2
nuclear quadrupole moment
0
data de descobèrta1940
parity+

decay modeintensity
β (β decay)100%

238U

mass number238
neutron number146
relative atomic mass
238.050786936 ± 0.000001601 Da
g-factor
0
natural abundance
99.2742 ± 0.001
Radioactivitat☢️ radioactive element
Semivida
4.463 ± 0.003 Gy
Espin0
nuclear quadrupole moment
0
data de descobèrta1896
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)5.44%
(double β decay)2.2%

239U

mass number239
neutron number147
relative atomic mass
239.054291989 ± 0.000001612 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
23.45 ± 0.02 m
Espin5/2
nuclear quadrupole moment
data de descobèrta1937
parity+

decay modeintensity
β (β decay)100%

240U

mass number240
neutron number148
relative atomic mass
240.056592411 ± 0.00000274 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
14.1 ± 0.1 h
Espin0
nuclear quadrupole moment
0
data de descobèrta1953
parity+

decay modeintensity
β (β decay)100%
α (α emission)

241U

mass number241
neutron number149
relative atomic mass
241.06033 ± 0.00021 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin7/2
nuclear quadrupole moment
data de descobèrta
parity+

decay modeintensity
β (β decay)

242U

mass number242
neutron number150
relative atomic mass
242.062931 ± 0.000215 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
16.8 ± 0.5 m
Espin0
nuclear quadrupole moment
0
data de descobèrta1979
parity+

decay modeintensity
β (β decay)100%

243U

mass number243
neutron number151
relative atomic mass
243.067075 ± 0.000322 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin9/2
nuclear quadrupole moment
data de descobèrta
parity-

decay modeintensity
β (β decay)
Uranium2

istòria

descobridor o inventaireMartin Klaproth
luòc de descobèrtaGermany
data de descobèrta1789
EtimologiaNamed for the planet Uranus.
pronunciationyoo-RAY-ni-em (English)

source

Abundance
Abundance in Earth's crust
2.7 mg/kg
natural abundance (Ocean)
0.0032 mg/L
natural abundance (còs uman)
0.0000001 %
natural abundance (meteoroid)
0.00000098 %
natural abundance (Solelh)
0.0000001 %
Abundance in Universe
0.00000002 %

Nuclear Screening Constants