- Atomic Radius (Å)
Lutetium is a chemical element with symbol Lu and atomic number 71. It is a silvery white metal, which resists corrosion in dry, but not in moist air. It is considered the first element of the 6th-period transition metals and the last element in the lanthanide series, and is traditionally counted among the rare earths.
71
Atomic Number
174.97 u
Atomic Mass
1936.15 K
Melting Point
3675 K
Boiling Point
9.84 g/cm³
Density
2.3 Å
Atomic Radius
1.87 Å
Covalent Radius
1.27
Electronegativity
5.43 eV
First Ionization Energy
33.4
Electron Affinity
6
Number of Shells
2, 8, 18, 32, 9, 2
Electron Shell Occupations
0.15 J/g
Specific Heat