Periodic table of the elements
ProtactiniumUraniumNeptunium
92
U
Uranium
238.02891
2
8
18
32
21
9
2
92
U
Uranium
238.02891
2
8
18
32
21
9
2
General
NameUranium
SymbolU
Number92
Chemical seriesActinides
Group / Period0 / 7
Blockf-block
CAS registry number7440-61-1

Uranium is a radioactive element

Physical properties
Statesolid
Density18.95 g/cm3
Melting point1405.3 K (1132.2 °C, 2070 °F)
Boiling point4404 K (4131 °C, 7468 °F)
Critical point

Atomic properties
Atomic Weight238.02891 g/mol
Crystal structureorthorhombic
Electronegativity1.38
Atomic radius175 pm
Atomic radius (calculated)
Electron configuration[Rn] 5f3 6d1 7s2
Electrons per shell2, 8, 18, 32, 21, 9, 2
Number of protons92
Number of neutrons146

Other languages
SpanishUranio
PortugueseUrânio
FrenchUranium
GermanUran
ItalianUranio
RussianУран
PolishUran
Chinese
Arabicيورانيوم
TurkishUranyum
DutchUranium


Periodic table of the elements
ProtactiniumUraniumNeptunium