71
174.967 u
Lu
Lutetium
Lanthanide
Atomic Structure
Physical State
Group
3
Period
6
Block
d
Electron Configuration
[Xe] 4f¹⁴ 5d¹ 6s²
Physical Properties
Atomic Mass:
174.967 u
Electronegativity:
1.27
Atomic Radius:
217 pm
Ionization Energy:
5.426 eV
Density:
9.84 g/cm³
Melting Point:
1925 K
Boiling Point:
3675 K
Historical Information
Discovered By:
Georges Urbain
Year Discovered:
1907