Thulium is among the most obscure elements in the periodic table. Interesting Thallium Facts: Thallium was discovered by two scientists independently of each other, William Crookes and Claude-Auguste Lamy, in 1861. Facts – Ytterbium The chemical symbol for Thulium is Tm.. Thulium is an easily workable metal with a bright silvery-gray luster. The metal tarnishes slowly in dry air to form the oxide and reacts with water to form the hydroxide and hydrogen gas. Thulium is a bright, soft, malleable, silvery-gray metal. Thulium History. 70. Thulium. Element Thulium (Tm), Group 19, Atomic Number 69, f-block, Mass 168.934. Like the other lanthanides, the most common oxidation state is +3, seen in its oxide, halides and other compounds; because it occurs so late in the series, however, the +2 oxidation state is also stabilized by the nearly full 4f shell that results. Most of the world's current supply of thulium comes from from mines and refineries in China. Lump with interesting surface. 1.1 Interesting Facts. Talk about the confusion! Swedish chemist Per Theodor Cleve discovered the metal in 1879 while processing the ore erbia. 1.3 History. What is Thulium. Some people consider it the most useless of all naturally occurring elements, though others will rush to its defense. 1.3.1 Who Discovered. It was found as a byproduct of sulfuric acid manufacturing. It is obtained commercially from monazite, which contains about 0.007% of the element. Thulium is a chemical element with the symbol Tm and atomic number 69. Thulium metal can resist corrosion due to dry air . Ed ordered this lump just because he heard it was the most useless element. Cost of Thulium It is a rare earth metal and is one of the least abundant. Only Tm-169 isotope of Thulium metal occur naturally. When bombarded in a nuclear reactor, thulium can be used as a radiation source in portable X-ray equipment. Both scientists discovered it by using the then-newly created flame spectroscopy method. It is the thirteenth and third-last element in the lanthanide series. Thulium is the least abundant of the rare earth elements, but with new sources recently discovered, it is now considered to be about as rare as silver, gold, or cadmium. Per Teodor Cleve. Thulium has been used to create lasers. 99.95%. When irradiated in a nuclear reactor, thulium produces an isotope 169 Tm that emits x-rays. It has very few applications. Because of its softness and malleability, thulium can be easily cut with a knife [3]. While it is the least abundant of all the lanthanides, or rare earth elements, new sources have been recently discovered, putting it on par with cadmium, silver and gold in terms of supply. The element is sometimes represented by an image of a snow-covered mountain to indicate the origin of its name, suggesting a region far off to the north [1]. Interesting Facts. Thulium is identified with the symbol TM on the periodic table, and it has an atomic number of 69. Thulium is not widely used, since it is the least abundant of the lanthanide elements, although it does have some industrial applications. Found in Minerals, Mining, Ores of Minerals. Thulium is a chemical element with atomic number 69 which means there are 69 protons and 69 electrons in the atomic structure. Naming: After Thule (A mythical region in Scandinavia) Discovery: Per Teodor Cleve (1879) Thulium Uses. 69. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. One interesting thing about thulium is that it is the rarest of the rare earth elements. Facts – Thulium. Thulium occurs in small quantities along with other rare earths in a number of minerals.
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