Origin / Meaning of the name Thorium
Thorium was named after Thor, the Norse God of War.
Periodic Table Group and Classification of the of the Thorium Element
Elements can be classified based on their physical states (States of Matter) e.g. gas, solid or liquid. This element is a solid. Thorium is classified as an element in the Actinide 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 of the Lanthanide and Actinide series. Most of the elements in the Actinide series are synthetic or man-made. Nearly 75% of all the elements in the Periodic Table are classified as metals which are detailed in the List of Metals.
Facts about the Discovery and History of the Thorium Element
Thorium was discovered by Jons Jacob Berzelius in Sweden in 1828.
History of the Periodic Table
Check out the brief History of the Periodic Table which details dates and the names of famous scientists and chemists who contributed to the development of the Periodic Table.
Occurrence of the Thorium Element
Monazite is the primary source of thorium
Abundances of the element in different environments
% in Universe 4×10-8%
% in Sun 3×10-8%
% in Meteorites 3.9×10-6%
% in Earth's Crust 0.0006%
% in Oceans 4×10-12%
% in Humans None
Associated Uses of Thorium
Uranium and thorium has been used to date hominid fossils.