3
6.94 u
Li
Lithium
Alkali Metal
Atomic Structure
Physical State
Group
1
Period
2
Block
s
Electron Configuration
[He] 2s¹
Physical Properties
Atomic Mass:
6.94 u
Electronegativity:
0.98
Atomic Radius:
182 pm
Ionization Energy:
5.392 eV
Density:
0.534 g/cm³
Melting Point:
453.69 K
Boiling Point:
1560 K
Historical Information
Discovered By:
Johan August Arfwedson
Year Discovered:
1817