92
U
uranium
238.03

General properties

Group
n/a
Period
period 7
Category
actinoids
Standard atomic weight
238.028 91(3)
Melting point
1405.3 K (1132.2 °C)
Boiling point
4404 K (4131 °C)
Phase at STP
solid

Additional properties

Block
f-block
Electron configuration
[Rn] 5f³ 6d¹ 7s²
Electrons per shell
2, 8, 18, 32, 21, 9, 2
Electronegativity
1.38
Density
19.1 g/cm³
Oxidation states
+1, +2, +3, +4, +5, +6 (a weakly basic oxide)
CAS Number
7440-61-1