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Terbium (Tb)
Atomic number: 65 · Category: lanthanide · Group 3 · Period 6 · Phase: Solid
Terbium is a chemical element with symbol Tb and atomic number 65. It is a silvery-white rare earth metal that is malleable, ductile and soft enough to be cut with a knife. Terbium is never found in nature as a free element, but it is contained in many minerals, including cerite, gadolinite, monazite, xenotime and euxenite.
Atomic mass: 158.925352
Density: 8.23
Melting point: 1629 K
Boiling point: 3396 K
Appearance: silvery white
Source: Wikipedia
Block: f
Molar heat: 28.91
CPK color:#30ffc7
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f9
Configuration (semantic): [Xe] 4f9 6s2
Shells: 2, 8, 18, 27, 8, 2
Electronegativity (Pauling): 1.1
Electron affinity: 112.4
Ionization energies: 565.8, 1110, 2114, 3839
Periodic position
Group: 3
Period: 6
xpos: 11
ypos: 9
Spectral/Bohr images
Image
3D Model