Share this credible answer with others. Simply paste this code into your blog or Web page:
Actinium was first recognized in 1899 by AndrŽ Debierne in uranium residues from pitchblende after the radium was extracted by Pierre and Marie Curie . It was later found to be identical with an element discovered in 1902 by Fritz Giesel and which he called emanium.
|
Answer verified with
|
HighBeam gives you access to newspaper, magazine, and trade journal articles plus press releases, facts, information, and biographies from thousands of sources.