โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Thulium
  • ๐Ÿ‡บ๐Ÿ‡ฆ ะขัƒะปั–ะน
  • ๐Ÿ‡จ๐Ÿ‡ณ ้Šฉ
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Thulium
  • ๐Ÿ‡ซ๐Ÿ‡ท Thulium
  • ๐Ÿ‡ฉ๐Ÿ‡ช Thulium
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ืชื•ืœื™ื•ื
  • ๐Ÿ‡ฎ๐Ÿ‡น Tulio
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใƒ„ใƒชใ‚ฆใƒ 
  • ๐Ÿ‡ต๐Ÿ‡น Túlio
  • ๐Ÿ‡ช๐Ÿ‡ธ Tulio
  • ๐Ÿ‡ธ๐Ÿ‡ช Tulium
  • ๐Ÿ‡ท๐Ÿ‡บ ะขัƒะปะธะน

Thulium - 69Tm: historical information

  • Discoveror: Per Theodore Cleve
  • Place of discovery: Sweden
  • Date of discovery: 1879
  • Origin of name : named after ""Thule", an ancient name for Scandinavia.

Per Theodor Cleve of Sweden discovered holmium in 1879 while working on erbia earth (erbium oxide). Thulium oxide (holmia) was present as an impurity in the erbia. The element is named after Thule, the ancient name for Scandinavia.