- Home About This Site Comments Help Links Window Version Show Table With: Name Atomic Number Atomic Mass Electron Configuration Number of Neutrons Melting Point Boiling Point Date of Discovery Crystal Structure Element Groups: Alkali Metals Alkaline Earth Metals Transition Metals Other Metals Metalloids Non-Metals Halogens Noble Gases Rare Earth Elements Basic Information | Atomic Structure | ...www.chemicalelements.com/elements/pa.html
- The Element Protactinium - Basic Physical and Historical Information ...education.jlab.org/itselemental/ele091.html
- Discovered : by O. Hahn and L. Meitner in Berlin, Germany, and independently by K. Fajans in Karlsruhe, Germany, and Frederick Soddy and co-workers in Glasgow, UK, in 1917 Origin : The name is derived from the Greek protos aktino, meaning first ray. Description : A radioactive metal, small amounts of which are found naturally in uranium ores. It is also extracted in gramme amounts from spent ...www.chemsoc.org/viselements/pages/protactinium.html