Radium is a solid metal that belongs to the group of the alkaline earth metals and has no stable isotopes. Naturally occurring radium is found in animals, plants, water, soils, and rock. It is mainly found in Phosphate rocks. While the element is present in uranium ores, it is a scarce one. There is only 0.14 grams in 1,000 kg of uranium. It is usually found in the form of radium bromide and chloride which are byproducts. The element was discovered in 1898 by Marie and Pierre Curie and it was in 1910 when it was first isolated.