What are 5 interesting facts about thulium?
Facts About Thulium
- 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 Scandinavia.
- Discovery: This rare earth was discovered by Sweedish chemist Per Teodor Cleve in 1879.
What is unique about thulium?
Thulium actually is the least abundant of the rare earths. Thulium metal is soft enough that it can be cut with a knife. Like other rare earths, it is malleable and ductile. Thulium has a silvery appearance.
What are 5 characteristics of sulfur?
Pure sulfur is a tasteless, odourless, brittle solid that is pale yellow in colour, a poor conductor of electricity, and insoluble in water. It reacts with all metals except gold and platinum, forming sulfides; it also forms compounds with several nonmetallic elements.
How many protons does thulium have?
69Thulium / Atomic number
What element reacts with thulium?
Thulium metal reacts with all the halogens to form thulium(III) halides. So, it reacts with fluorine, F2, chlorine, Cl2, bromine, I2, and iodine, I2, to form respectively thulium(III) bromide, TmF3, thulium(III) chloride, TmCl3, thulium(III) bromide, TmBr3, and thulium(III) iodide, TmI3.
What are 3 uses for thulium?
Thulium has been used to create lasers. When stable thulium (Tm-169) is bombarded in a nuclear reactor it can later serve as a radiation source in portable X-ray devices. It also has potential use in ceramic magnetic materials called ferrites, which are used in microwave equipment.
How strong is thulium?
Thulium is a strong paramagnet above 56 K (−217 °C, or −359 °F). Between 56 and 32 K (−241 °C, or −402 °F) the metal is antiferromagnetic with a sinusoidally modulated magnetic structure along the c-axis of its crystal structure, and below 32 K thulium is ferrimagnetic. The periodic table is made up of 118 elements.
What are 3 common uses of sulfur?
Today, it’s most common use is in the manufacture of sulfuric acid, which in turn goes into fertilizers, batteries and cleaners. It’s also used to refine oil and in processing ores. Pure sulfur has no smell. The stink associated with the element comes from many of its compounds, according to Chemicool.
What is thulium in the periodic table?
Thulium is a chemical element having an atomic number 69 with the symbol Tm, discovered by Theodor Cleve in the year 1879. It is the thirteenth element in the lanthanide series in the periodic table.
What is thulium made of?
Thulium is found principally in the mineral monazite, which contains about 20 parts per million. It is extracted by ion exchange and solvent extraction. The metal is obtained by reducing the anhydrous fluoride with calcium, or reducing the oxide with lanthanum.
How was thulium found?
History. Thulium was first isolated in 1879 as its oxide by Per Teodor Cleve at the University of Uppsala, Sweden. The discoveries of the many rare earth elements (aka lanthanoid) began with yttrium in 1794. This was contaminated with these chemically similar elements.
What is the atomic number of thulium?
Thulium is a chemical element with symbol Tm and atomic number 69. It is the thirteenth and third-last element in the lanthanide series.
What happens when Thulium is dissolved in sulfuric acid?
Thulium dissolves in dilute sulfuric acid and form pale green Tm (lll) ions. It reacts with metallic and non-metallic elements and formed binary compounds like: TmN, TmS, TmC 2, TmH 2, TmH 3, TmSi 2, TmB 4. Thulium mostly exist in +2 and +3 oxidation states. Tm 3+ ions shows bright blue luminescence.
What does thulium have a soft texture?
Moreover, the element has soft texture. It has bright silver gray color. Due to its rarity, Thulium is sold in high price. Even though Thallium is rare, it has been used for a number of purposes. Thulium is applied in several solid-state lasers. As I have stated before, Thulium has soft texture.
What are the sources of thulium?
Sources of thulium. 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. Like other rare earth elements, thulium occurs in small quantities in a number of minerals.