thulium

Erialasõnastikud

ID 732315 Viimati muudetud 28.10.2015

Valdkond anorgaaniline keemia

tuulium

thulium

Thulium

tulium

keemiline element, lantanoid, hõbevalge metall, sulamistemperatuur 1545 ºC, tihedus 9,32 Mg/m3

the chemical element of atomic number 69, a soft silvery-white metal of the lanthanide series

tuulium

Tm tähis

thulium

Hea teada

Thulium was discovered in 1879, along with holmium, by Per Teodor Cleve, who named the oxide thulia after an ancient name for Scandinavia. It is found in small amounts in such rare-earth minerals as laterite ionic clays, xenotime, and euxenite and in products of nuclear fission. Thulium is one of the rarest of the rare-earth elements. Its abundance in Earth’s crust is nearly the same as those of antimony and iodine.

Tm tähis

thulium

Thulium

tulium

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