Thulium (Tm) Properties and Facts

Element 69 - Lanthanide

What are the basic properties of Thulium?

Thulium (symbol: Tm) is a lanthanide with atomic number 69. Its atomic mass is 168.93 u, and it belongs to period 6 and group 3.

What is the electron configuration of Thulium?

The electron configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹³ 5s² 5p⁶ 6s²

What are the physical properties of Thulium?

Melting point: 1818.0 K
Boiling point: 2223.0 K
Density: 9.32 g/cm³

What are the known isotopes of Thulium?

  • Tm-169: 100.0% abundance

What is the biological role and occurrence of Thulium?

Biological role: No known biological role
Natural occurrence: Found in rare earth minerals

← Back to Periodic Table