Polo­nium

Polonium is an element. It was discovered by Marie Sklodowska Curie, a Polish chemist, in 1898 and it is a chemical element with the symbol Po and atomic number 84. She obtained polonium from pitchblende, a material that contains uranium, after noticing that unrefined pitchblende was more radioactive than the uranium that was separated from it. It's a rare and highly radioactive metal with no stable isotopes and it is chemically similar to selenium and tellurium.
Category:Element
Category:Chemistry