Thulium - Wikipedia
网页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. …
Thulium | Rare Earth Element | Britannica
网页2024年8月11日 · Thulium (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 - Element information, properties and uses | Periodic Table
网页Element Thulium (Tm), Group 19, Atomic Number 69, f-block, Mass 168.934. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Facts About Thulium - Live Science
网页2013年7月24日 · Atomic 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 | Uses, Facts, Physical & Chemical Characteristics
网页Definition, mass & chemical names. Thulium. Thulium was discovered in 1879. It is slowly tarnished in air but is more resistant to oxidation than other rare earth metals. Thulium is used as radiation source in portable X-ray devices.
Thulium - Encyclopedia.com
网页2018年5月14日 · Overview. 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 …
Thulium Facts, Symbol, Discovery, Properties, Uses - Chemistry …
网页Thulium (pronounced as Thoo-lee-em) [2] is a soft, silver-gray rare earth metal [3] belonging to the Lanthanides group and represented by the symbol Tm [1]. While its most abundant, naturally occurring isotope is 169 Tm, it has 34 radioactive isotopes, out of which the most stable one is 171 Tm with a half-life period of 1.92 years [4] .
Thulium - Definition, Preparation, Properties, Uses ... - Examples
网页2024年7月12日 · Thulium is a chemical element with the symbol Tm and atomic number 69. It is a member of the lanthanide series in the periodic table, a group of elements known as rare earth metals. Thulium is the thirteenth and third-last element in the lanthanide series.
Thulium - Wikiwand
网页Not to be confused with Thallium. Thuliumis a chemical element; it has symbolTmand atomic number69. It is the thirteenth element in the lanthanideseries of metals. It is the second-least abundant lanthanide in the Earth's crust, after …
Thulium Element Facts / Chemistry - chemicool.com
网页Thulium is a bright, soft, malleable, silvery-gray metal. It is a rare earth metal and is one of the least abundant. The metal tarnishes slowly in dry air to form the oxide and reacts with water to form the hydroxide and hydrogen gas.