Identify the names of the constituent elements and the ionic name of CsI, a compound used in radiology.

• A. Cesium and Iodine; Cesium iodide
• B. Cesium and Iodine; Cesium iodine
• C. Cesium and Iodine; Cesium iodite
• D. Cesium and Indium; Cesium indiumide

Answer: (A)