Tm
69 lanthanide Generado con IA
Tulio
Symbol Tm
Atomic Mass 168.934222
Thulium is a chemical element with symbol Tm and atomic number 69. It is the thirteenth and antepenultimate (third-last) element in the lanthanide series. Like the other lanthanides, the most common oxidation state is +3, seen in its oxide, halides and other compounds.
Properties
- Phase: Solid
- Density: 9.32 g/cm³
- Melting Point: 1818 K
- Boiling Point: 2223 K