Tm (Noun)
Meaning
A soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime.
Classification
Nouns denoting substances.
Examples
- Thulium is used in the production of high-temperature superconductors and other specialty alloys.
- Thulium has several unique properties that make it useful in a variety of applications, including lasers and portable X-ray machines.
- Thulium is one of the rarest and most expensive of the rare earth elements, due to the difficulty of extracting it from its ores.
- Thulium-170 is used as the X-ray source in portable X-ray machines used in medical and industrial applications.
- The first ionization energy of thulium is 6.18 eV, which is higher than that of the other rare earth elements.