The world production of artificial promethium is 1-2 kg/year.
The total mass of natural promethium in the Earth crust is under 1 kg.
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∙ 8y agoThe price of promethium is estimated to be 0,5 $ per 1 curie.
Promethium is a highly radioactive element primarily created in the laboratory, though several of it's isotopes can exist in nature (it's longest-lived isotope has a half-life of only 17 years). It is estimated that in nature, no more than 560 grams (a little over a pound) of Promethium exists in the entire crust of the earth.
Promethium is paramagnetic.
Promethium is not flammbale.
Promethium bromide contain promethium and bromine.
Promethium is not flammable.