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Thulum — Thulium

Monster name: Thulum

Thulium

Atomic number
69
Symbol
Tm
Series
lanthanides
Group
La
Period
6
State of matter
solid
  • rare earth elements

Thulium was named after the ancient mythical place called Thule, which stands for either Scandinavia or an island in the North Atlantic – depending upon interpretation.

Highly pure Thulium sublimed dendritic and 1cm cube
Highly pure Thulium sublimed dendritic and 1cm cube — Image source: Wikimedia Commons