Cesium FAQ

By Randal Nelson


  • 9193 MHz hyperfine transition
  • 99.9% pure Cesium metal has a street value of $161.10 per gram
  • used as a getter in vacuum systems due to its high affinity for oxygen
  • clocks are accurate to better than one second in a million years
  • The richest known deposit occurs at Bernic Lake Manitoba
  •  Atomic number 55, Cesium is the heaviest of the natural alkali metals
  • It melts at 28.4 C (84 F), just below body heat, and boils at 669.3 C