1879 Thulium

The book of science

Tom Sharp

UppsalaPer Teodor Cleve elements Thulium


Atomic number 69


Thulium is the second rarest element, after promethium, in the lanthanide group of the periodic table. Sitting at the table, one would never say, “Please pass the thulium.” By which I mean to say that most of us go through life without using “thulium” in a sentence.

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