Caesium

+ Located at Group 1 and Period 6 of the Periodic Table is the element . This is Caesium First  discovered by Robert Wilhelm Bunsen and Gustav Robert Kirchhoff in 1860 and first isolated by Carl Setterberg in 1882. Gustav Robert Kirchhoff Robert Wilhelm Bunsen More than two-thirds of the world's reserves of Caesium – 110,000 tonnes – are found at Bernic Lake, Manitoba, Canada. Stable cesium is not likely to affect the health of children, but large amounts of gamma radiation, from sources such as radioactive cesium, could damage cells and might also cause cancer. Short exposure to extremely large amounts of radiation might cause nausea, vomiting, diarrhea, bleeding, coma, and even death. He named this new element caesium from the Latin word meaning sky blue. This time they did isolate the element by electrolysis, from molten RbCl (and also by reducing its chloride using potassium metal or by strongly heating its tartrate salt with carbon) and calculat...