Discovery
Discovered by Per Theodor Cleve in 1879.
Common Uses
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Used in portable X-ray machines.
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Used in medical treatments, such as the treatment of cancer.
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Used in high-power lasers and phosphors.
Interesting Facts
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Thulium is the least abundant of the rare earth elements.
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It has a unique blue color when it is ionized, making it useful in specialized lasers.
Back to Periodic Table