In 1980, the International Atomic Energy Agency (IAEA) observed that protactinium, a chemical element generated in thorium reactors, could be separated and allowed to decay to isotopically pure ...

Richard Wilson relates how the rare, highly radioactive, highly toxic element protactinium puzzled chemists for a long time, and was discovered and named twice from two different isotopes before ...

Atomic Number: 91 Atomic Symbol: Pa Atomic Weight: 231.03588 Melting Point: 2,862 F (1,572 C) Boiling Point: 7,232 F (4,000 C) Word Origin: The word protactinium comes from the Greek protos, meaning ...

Kasimir Fajans and O.H. Göhring first produced protactinium-234 in 1913 while examining the radioactive decay of uranium. They named the element brevium, which means brief. Following this, two groups ...

Chemists have recently explored protactinium's multiple resemblances to more completely understand the relationship between the transition metals and the complex chemistry of the early actinide ...

Researchers from the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences and their collaborators have synthesized a new isotope—protactinium-210—for the first time. It is the most ...

Scientists demonstrated that a positively charged protactinium dioxide ion may not exist in aqueous solution like other highly charged actinides, such as uranium and plutonium. Found naturally only in ...

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Norway holds a resource of 170,000 tonnes of thorium, which amounts to 15% of the world’s total of 1.2 million tonnes. There is far more thorium than that within the earth’s crust all told, averaging ...

In 1980, the International Atomic Energy Agency (IAEA) observed that protactinium, a chemical element generated in thorium reactors, could be separated and allowed to decay to isotopically pure ...