Telluride
Telluride' is an ion. Chemical compounds containing this ion are called 'tellurides'. Examples are sodium telluride and hydrogen telluride. Tellurides are strong reducing agents. Some tellurides are impure, making them weaker reducing agents. Tellurides are the main source of tellurium in the ground. It only exists at very high pH. At lower pH's, hydrogen telluride, HTe-, is made.