PRESENTATION OUTLINE
Natural occurring samarium has a radioactivity of 128Bq (which means becquerel).
Samarium was discovered by a French chemist named Paul Émile Lecoq De Boisbaudran in the 19th century.
Boisbaudran isolated samarium oxide/or hydroxide in Paris in 1879 from a mineral name "Samarskite".
In 1878 a Swiss chemist named Marc Delafontaine announced a new element called "Decipium". it was demonstrated in 1880-1881 that it was one of the elements of samarium.
Samarium is a conductive, metal that is soft and silvery. It is also highly reactive to water. Samarium is also flammable and slightly toxic.
