103
266 u
Lr
Lawrencium
Actinide
Atomic Structure
Physical State
Group
3
Period
7
Block
d
Electron Configuration
[Rn] 5f¹⁴ 7s² 7p¹
Physical Properties
Atomic Mass:
266 u
Electronegativity:
1.3
Atomic Radius:
N/A
Ionization Energy:
4.9 eV
Density:
N/A
Melting Point:
1900 K
Boiling Point:
N/A
Historical Information
Discovered By:
Lawrence Berkeley National Laboratory
Year Discovered:
1961