Category
actinide
State at Room Temperature
solid
Electron Configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 6d¹
Valence Electrons
2
Lewis Dot:••
Electronegativity
1.1
Pauling scale
Oxidation States
+3
Melting Point
1323 K
1049.85°C
Boiling Point
3471 K
3197.85°C
Density
10.07
g/cm³
Position in Table
Group Period 7f-block
Discovery
Historical Information
Discovered byAndré-Louis Debierne
Year1899
Common Uses
Applications & Industries
Neutron sources, radiotherapy, research
Related Elements
Same group or period
Related Calculators
Need more chemistry tools? Check out birthdaybump.com for additional resources.