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Bookmark or Share- Thulium | Rare Earth Element | BritannicaThulium (Tm), chemical element, a rare-earth metal of the lanthanide series of the periodic table. Thulium is a moderately hard, silvery white metal that is stable in air but can easily be dissolved in diluted acids—except hydrofluoric acid (HF), in which an insoluble trifluoride (TmF3) layer forms.
- Thulium | Encyclopedia.comOverview. Thulium was given its name in honor of the earliest name for Scandanavia, Thule. The element was discovered and named by Swedish chemist Per Teodor Cleve (1840-1905) in 1879. Cleve made his discovery while studying the mineral erbia.
- Thulium - WikipediaIt 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.
- Facts About Thulium | Live ScienceAtomic Number: 69 Atomic Symbol: Tm Atomic Weight: 168.93421 Melting Point: 2,813 F (1,545 C) Boiling Point: 3,542 F (1,950 C) Word origin: Thulium is named for Thule, the earliest name for...
- Thulium - Element information, properties and uses | Periodic TableElement Thulium (Tm), Group 19, Atomic Number 69, f-block, Mass 168.934. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
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