Origin of Name |
From the Greek protos, meaning first, combined with actinium |
Date and Place of Discovery |
In 1917 (see below) |
Discovered by |
Otto Hahn and
Lise Meitner in Berlin
Kasimir Fajans in Germany and
John Cranson, A. Fleck and Fredrich Soddy in Glasgow. |
Common Compounds |
- Protactinium bromide
- Protactinium chloride
- Protactinium fluoride
- Protactinium iodine
- Protactinium oxide
|
Interesting facts |
- It is one of the most rare and expensive elements.
- It is superconductive at temperatures below 1.4 K.
- It has 29 radioisotopes which have been characterized.
- The isotope, Protactinium-231, formed by
alpha decay of Uranium-235, might create a
nuclear chain reaction which might be used in a nuclear weapon.
|
Common Uses |
There are no known uses outside of the laboratory because of its high radioactivity and high
toxicity.
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