Discovered By: Georges Urbain, Charles James
Discovery year: 1907

The following table showing some properties of Lutetium(Lu):

Table Example
Atomic number 71
Group n/a
Period 6
Block d
Atomic weight 174.9668
Oxidation states +3
Ionic charge Lu^3+
Electrons 71
Protons 71
Neutrons 104


Table Example
Electrons per shell K2 L8 M18 N32 O9 P2
Electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4f^14 5d^1
Atomic radius 217 pm
Covalent radius 187 pm
Boiling point 3402°C
Melting point 1663°C
Phase Solid
Fusion heat 22 kJ.mol^-1
Thertmal expansion 9.9*10^-6 K^-1
Vaporization heat 415 kJ.mol^-1


Table Example
Color Silver
Brinell hardness 893 MPa
Bulk modulus 48 GPa
Density 9841 kg.m^-3
Liquid density 9300 kg.m^-3
Mohs hardness 2.6
Molar volume 1.778*10^-5 m^3.mol^-1
Poisson ratio 0.26
Shear modulus 27 GPa
Vickers hardness 1160 MPa


Table Example
Young's modulus 69 GPa
Electrical conductivity 1.8*10^6 S.m^-1
Electrical type Conductor
Magnetic type Paramagnetic
Resistivity 5.6*10^-7 Ohm.m
Superconducting point 0.1 K
Electronegativity 1.27
Valence 3
Electron affinity 50 kJ.mol^-1
First ionization energy 523.5 kJ.mol^-1
Radioactive No
Neutron cross section 84 barn