How Do We Get It? - Cesium.Unraveling Cesium: How We Get This Fascinating Element. Have you ever marveled at the wonders of the periodic table? Among the 118 known elements, cesium (Cs) stands out not just for its unique properties but also for its interesting journey from the Earth to our labs. Let's take a closer look at cesium, one of the most intriguing elements, and explore how we extract and utilize it.