protactinium- a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead atomic number 91,protoactinium,Pa metal,metallic element- any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed ...
Atomic Data of Protactinium (Element 91) Uses of Protactinium Protactinium Hazards Interesting Facts Protactinium Cost What is Protactinium Protactinium is a highly radioactive metal belonging to the family of actinides and denoted by the chemical symbol Pa [1]. It has 27 isotopes with mass numbers...
Related to Protactinium-231: Element 91pro·tac·tin·i·um (prō′tăk-tĭn′ē-əm) n. Symbol Pa A rare, extremely toxic, radioactive, lustrous, metallic element having more than 30 known isotopes and isomers, the most common of which is Pa-231 with a half-life of 32,760 years...