Mixed Metal Chalcogenides

Download or read book Mixed Metal Chalcogenides written by Dr. Satishkumar V. Patil and published by Ashok Yakkaldevi. This book was released on 2020-12-10 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1.1 Introduction VIA group elements in the periodic table are known as chalcogens. Chalcogens are sometimes known as oxygen family. Oxygen (O), Sulphur (S), Selenium (Se) and Tellurium (Te) are the elements of chalcogens. The chalcogen term was first introduced by Wilhelm Bilts group around 1930 at the University of Honover, where it was proposed by a Scientist Werner Fischer [1]. Chalcogen is a Greek word which means ‘ore forming’. Chalcogen elements react with almost all elements in the periodic table to form stable compounds, which occurs in the earth crust and these are the ores of particular elements. So they are named as ‘ore formers’. Oxide, sulphite, selenide and telluride are insoluble in water. A Chalcogenide is the chemical compound consisting of at least one chalcogen ion and at least one more electropositive element. Chalcogenide term is more commonly reserved for sulfides, selenides, tellurides and not for oxides,