Thulium, curiyaha 69 ee miiska xilliyeedka. Thulium, curiyaha leh waxa ugu yar ee curiyeyaasha dhulka naadir ah, inta badan waxay la nool yihiin walxo kale oo ku jira Gadolinite, Xenotime, dahab madow madow iyo monazite. Biraha Thulium iyo lanthanide waxay si dhow ugu wada nool yihiin macdanta aadka u adag ee nat...
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