Fun Fact: The radioactive isotope thulium-170, produced by bombarding naturally-occurring thulium-169 with neutrons, is used in portable x-ray machines. It is one of the few truly rare elements among the rare earths.
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Fun Fact: The radioactive isotope thulium-170, produced by bombarding naturally-occurring thulium-169 with neutrons, is used in portable x-ray machines. It is one of the few truly rare elements among the rare earths. |