Strontium
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Strontium (symbol: Sr) is a chemical element with the atomic number 38[1].
Strontium-90
It is an artificial radionuclide from nuclear fission which was released in great amounts during the nuclear weapon tests and in the atomic disasters of Chernobyl and Fukushima.
- ↑ https://en.wikipedia.org/w/index.php?title=Strontium&oldid=766053639 as at February 22, 2017