promethium u rečniku italijanskog jezika Oksford‒Paravia

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Prevodi za promethium u rečniku italijanski»engleski (Pređite na engleski»italijanski)

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engleski
Finally, promethium can be formed in nature as a product of spontaneous fission of uranium-238.
en.wikipedia.org
However, if the packaging is damaged, then promethium becomes dangerous to the environment and humans.
en.wikipedia.org
In the periodic table, it is located to the right of the actinide uranium, to the left of the actinide plutonium and below the lanthanide promethium.
en.wikipedia.org
There are two possible sources for natural promethium: rare decays of natural europium-151 (producing promethium-147), and uranium (various isotopes).
en.wikipedia.org
Examples include technetium-95 and promethium-146.
en.wikipedia.org
Many properties of promethium rely on its position among lanthanides and are intermediate between those of neodymium and samarium.
en.wikipedia.org
Elements with atomic numbers 1 through 40 are all stable, while those with atomic numbers 41 through 82 (except technetium and promethium) are metastable.
en.wikipedia.org
Only the highly unstable and radioactive promethium rare earth is quite scarce.
en.wikipedia.org
Another method is to bombard uranium-238 with fast neutrons to cause fast fission, which, among multiple reaction products, creates promethium-147.
en.wikipedia.org
The promethium in the outer envelope may be generated by the spontaneous fission of higher mass transuranic elements.
en.wikipedia.org

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