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Tb - Terbium - periodic table of the elements

Terbium was discovered by Mosander in 1843 in Stockholm. One of four elements named for the Swedish town of Ytterby.
Atomic number - 65 Density g/mL 8 .27
Atomic weight u 158 .9254 Melting point K 1630
Bonding radius A 1 .59 Boiling point K 3496
Atomic radius A 2 .51 Heat of vaporization kJ/mol 330 .9
Ionization Potential V 5 .86 Heat of fusion kJ/mol 10 .8
Electronegativity - 1 .2 Specific heat J/gK 0 .18
The oxide is a weak base.
Crystal are hexagonal.

Electron configuration: [Xe] 4f9 6s2

Other elements of the periodic table

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HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLa * HfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAc ** RfDbSgBhHsMt110111112113
Lanthanides* CePrNdPmSmEuGdTbDyHoErTmYbLu
Actinides ** ThPaUNpPuAmCmBkCfEsFmMdNoLr