What is cobalt selenide formula?

The chemical formula for cobalt selenide is CoSe. It is a binary compound consisting of one cobalt atom and one selenium atom. Cobalt selenide is a black, crystalline powder with metallic properties. It is insoluble in water but soluble in acids and alkalis. Cobalt selenide is used in the semiconductor industry for the production of thin-film solar cells, as well as in catalysts and in the manufacture of magnets.