Facts about Thulium
Facts about Thulium - Element included on the Periodic Table
Facts about the Definition of the Element Thulium
The Element Thulium is defined as...
A bright, silvery rare-earth element obtained commercially from monazite, having an x-ray emitting isotope that is used in small portable medical x-ray units.
Interesting Facts about the Origin and Meaning of the element name Thulium
What are the origins of the word Thulium ?
Named after Thule, an ancient Roman name for a mythical country in the far north, possibly Scandinavia.
Facts about the Classification of the Element Thulium
Thulium is classified as an element in the Lanthanide series as one of the "Rare Earth Elements" which can located in Group 3 elements of the Periodic Table and in the 6th and 7th periods. The Rare Earth Elements are divided into the Lanthanide and Actinide series. The elements in the Lanthanide series closely resemble lanthanum, and one another, in their chemical and physical properties. Their compounds are used as catalysts in the production of petroleum and synthetic products.
Brief Facts about the Discovery and History of the Element Thulium
Thulium was discovered by Per Teodor Cleve in Sweden in 1879
Occurrence of the element Thulium in the Atmosphere
Found in small quantities in minerals with other rare earths - gadolinite, euxenite, xenotime
Common Uses of Thulium
Power for portable x-ray machines
The Properties of the Element Thulium
Name of Element : Thulium
Symbol of Element : Tm
Atomic Number: 69
Atomic Mass: 168.9342 amu
Melting Point: 1545.0 °C - 1818.15 °K
Boiling Point: 1727.0 °C - 2000.15 °K
Number of Protons/Electrons: 69
Number of Neutrons: 100
Crystal Structure: Hexagonal
Density @ 293 K: 9.321 g/cm3
The element Thulium and the Periodic Table
Find out more facts about Thulium on the Periodic Table which arranges every chemical element according to its atomic number, as based on the periodic law, so that chemical elements with similar properties are in the same column. Our Periodic Table is simple to use - just click on the symbol for Thulium for additional facts and info and for an instant comparison of the Atomic Weight, Melting Point, Boiling Point and Mass - G/cc of Thulium with any other element. An invaluable source for more interesting facts and information about the Thulium element and as a Chemistry reference guide.
Facts and Info about the element Argon - IUPAC and the Modern Standardised Periodic Table
The Standardised Periodic Table in use today was agreed by the International Union of Pure Applied Chemistry, IUPAC, in 1985 which includes the Thulium element. The famous Russian Scientist, Dimitri Mendeleev, perceived the correct classification method of "the periodic table" for the 65 elements which were known in his time. Thulium was discovered by Per Teodor Cleve in Sweden in 1879. The Standardised Periodic Table now recognises more periods and elements than Dimitri Mendeleev knew in his day but still all fitting into his concept of the "Periodic Table" in which Thulium is just one element that can be found.
Facts and Info about the Element Thulium
Information Facts about the Thulium Element