A metal

Periodic Table Information

Protactinium is located in the 7th period, and resides in the Actinide family. It's Atomic Number is 91. It's Atomic Mass is 231.03587. Protactinium has 91 Protons and Electrons, and 140 Neutrons. Its symbol is Pa.

Uses, and Where it's Found

Protactinium is found in Uraninite Ores. It currently has no uses outside Scientific Research.

Its Discovery

Protactinium was discovered in 1913 by Kasimirs Fajans and Oswald Helmuth Göhring, and named brevium because of the short half-life of the specific isotope studied, namely protactinium. A more stable isotope of Protactinium was discovered in 1917-18 by Otto Han and Lise Meitner, and they chose the name proto-actinium, but then the IUPAC named it finally protactinium in 1949 and confirmed Hahn and Meitner as discoverers.


Physical Properties:

  • Melting Point-1600°C
  • Boiling Point- Unknown
  • Malleable
  • Shiny
  • Silvery-Grey

Chemical Properties:

  • Radioactive
  • Superconductive

Who's this amazing presentation By?

Mckenzie Engelhaupt


Physical Science

14 December, 2014