| Strontium Selenide, SrSe, is obtained by the reduction of strontium selenite by hydrogen at 600° C. It is a white micro- crystalline substance, of density 4.38, with a reddish tinge, probably due to the presence of selenium, and it is more fusible and less stable than calcium selenide. It can also be prepared by heating selenium with strontium oxide or carbonate. The heat of formation from the elements is 77.14 Cal. The phosphorescence of strontium selenide has been studied by Pauli and Kittlemann. |