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Lutetium (Lu)
Atomic number: 71 · Category: lanthanide · Group 3 · Period 6 · Phase: Solid
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.
Atomic mass: 174.96681
Density: 9.841
Melting point: 1925 K
Boiling point: 3675 K
Appearance: silvery white
Source: Wikipedia
Block: d
Molar heat: 26.86
CPK color:#00ab24
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d1
Configuration (semantic): [Xe] 4f14 5d1 6s2
Shells: 2, 8, 18, 32, 9, 2
Electronegativity (Pauling): 1.27
Electron affinity: 33.4
Ionization energies: 523.5, 1340, 2022.3, 4370, 6445
Periodic position
Group: 3
Period: 6
xpos: 17
ypos: 9
Spectral/Bohr images
Image
3D Model