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Tuulium (sümbol Tm) on keemiline element järjenumbriga 69. Tuuliumi avastas Rootsi keemik Per Teodor Cleve.
69 |
2 8 31 18 8 2 |
Tm 168,934 |
|
Tuulium |
Tal on üks stabiilne isotoop massiarvuga 169.
Omadustelt on ta lantanoid ja sellisena haruldane muldmetall. Tuuliumi tihedus normaaltingimustel on 9,32 g/cm³. Sulamistemperatuur on 1545 ja keemistemperatuur 1950 Celsiuse kraadi.
Vikisõnastiku artikkel: tuulium |
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