Cov lus qhia luv luv
Khoom npe: preasemium
Mis: PR
CAS TSIS MUAJ .: 7440-10-10-0
Molecular hnyav: 140.91
Qhov ceev faj: 6.71 g / ml ntawm 25 ° C
Melting taw tes: 931 ° C
Cov duab: 10 x 10 x 10 hli voos voos
Khoom siv: | Preaseymium |
Purity: | 99.9% |
Atomic tus naj npawb: | 59 |
Ceev | 6.8 G.CM-3 ntawm 20 ° C |
Melting taw tes | 931 ° C |
Bolling Point | 3512 ° C |
Qho loj dav | 1 nti, 10mm, 25.4mm, 50mm, lossis customized |
Daim ntawv thov | Khoom plig, science, nthuav tawm, kev sib sau, kho kom zoo nkauj, kev kawm, tshawb fawb |
Tseem muaj cov tshuaj txhuam hniav muag, cov hlau daj-daj. Nws yog ib tus tswv cuab ntawm pawg neeg Lanthanide ntawm cov lus ntawm cov ntsiab lus. Nws rov qab maj mam nrog oxygen: Thaum raug cua nws ua rau ntsuab oxide uas tsis tiv thaiv nws los ntawm oxidation ntxiv. Nws yog cov tiv taus ntau dua hauv kev ua xeb hauv cov hlau tsis muaj tsawg, tab sis nws tseem yuav tau khaws cia hauv qab roj lossis siv nrog yas. Nws rov qab los sai nrog dej.
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