1. RbI: Rubidium iodide 2. Cs2SO4: Cesium sulfate 3. Al2S3: Aluminium sulfide 4. Sr3N2: Strontium nitride Solution 1. RbI: Rubidium iodide 2. Cs2SO4: Cesium sulfate 3. Al2S3: Aluminium sulfide 4. Sr3N2: Strontium nitride.Read less