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Bookmark or Share- Protactinium | History, Uses, Facts, Physical & Chemical CharacteristicsProtactinium. Predicted by Dimitri Mandeleev in 1871, protactinium was first identified in 1913 by Kasimir Fajans and Oswald Helmuth Gohring. It is highly radioactive, scarce and toxic element and has no uses outside scientific research.
- Protactinium (Pa) - Definition, Preparation, Properties, Uses ...The nucleus of a Protactinium atom comprises 91 protons, imparting a positive charge, and a variable number of neutrons across its isotopes, with ^231Pa containing 140 neutrons. The delicate balance between protons and neutrons plays a crucial role in the stability and radioactivity of Protactinium isotopes.
- Facts About Protactinium | Live ScienceOne of the rarest naturally occurring elements, protactinium occurs in Earth’s crust in average concentrations of a few parts per trillion. This rarity makes it one of the most expensive natural ...
- Protactinium - Element information, properties and uses | Periodic TableElement Protactinium (Pa), Group 20, Atomic Number 91, f-block, Mass 231.036. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
- Periodic Table of Elements: Los Alamos National LaboratoryProtactinium is one of the rarest and most expensive naturally occurring elements. The average concentrations of protactinium in the Earth's crust is typically on the order of a few parts per trillion, but may reach up to a few parts per million in some uraninite ore deposits.
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