Thulium (Tm) in the periodic table — PeriodicTable

Thulium (Tm) in the periodic tableThulium is element 69, a lanthanoid of the f block, in period 6. Its ground-state configuration is [Xe] 4f13 6s2, and it usually shows the oxidation states 0, 2, 3.It was discovered in 1879, by Cleve.Name origin: Thule, the ancient name for Scandinavia. Blank rows are columns the sheet does not measure for this element.

Property

Value

Unit

Atomic weight

168.93421

Da

Electronegativity

1.25

First ionisation energy

596.7

kJ/mol

Melting point

1818

K

Boiling point

2223

K

Density

9.321

g/cm³

Abundance

0.52

mg/kg

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