69
Tm
168.934222Thulium
Appearancesilvery gray
Categorylanthanide
Discovered byPer Teodor Cleve
Named byN/A
What element is Tm on the periodic table?Tm is the element Thulium on the periodic table.
What is the symbol for Thulium on the periodic table?The symbol for Thulium on the periodic table is Tm.
What does Thulium look like?To the human eye, Thulium is silvery gray.
About ThuliumThulium is a chemical element; it has symbol Tm and atomic number 69. It is the thirteenth element in the lanthanide series of metals. It is the second-least abundant lanthanide in the Earth's crust, after radioactively unstable promethium. It is an easily workable metal with a bright silvery-gray luster. It is fairly soft and slowly tarnishes in air. Despite its high price and rarity, thulium is used as a dopant in solid-state lasers. It has no significant biological role and is not particularly toxic. Artificial radioactive isotopes of thulium are used as radiation sources in some portable X-ray devices.Source: Wikipedia