1) Optical material
Found on
https://www.crosswordclues.com/clue/sulfoselenide
In chemistry, a sulfoselenide is a compound containing both metal sulfides and metal selenides. Because metal sulfides and metal selenides have similar crystal structures, they exhibit some mutual solubility, forming solid solutions. Since the ionic radius sulfide of (S2-) is however much smaller than that for selenide (Se2-), the solubility range...
Found on
http://en.wikipedia.org/wiki/Sulfoselenide
No exact match found.
