Cov khoom
| Scandium, 21 Peb | |
| Atomic naj npawb (Z) | 21 |
| Phase ntawm STP | khov kho |
| Melting point | 1814 K (1541 ° C, 2806 ° F) |
| Boiling point | 3109 K (2836 ° C, 5136 ° F) |
| Ceev (ze rt) | 2.985 g / cm3 |
| thaum ua kua (ntawm mp) | 2.80g / cm3 |
| Kub ntawm fusion | 14.1 kJ / mol |
| Kub ntawm vaporization | 332.7 kJ/mol |
| Molar tshav kub muaj peev xwm | 25.52 J / (mol·K) |
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Scandium Oxide
Scandium (III) Oxide los yog scandia yog ib qho inorganic compound nrog formula Sc2O3. Cov tsos yog nplua dawb hmoov ntawm cubic system. Nws muaj cov kab lus sib txawv xws li scandium trioxide, scandium (III) oxide thiab scandium sesquioxide. Nws physico-chemical zog yog ze rau lwm yam tsawg lub ntiaj teb oxides xws li La2O3, Y2O3 thiab Lu2O3. Nws yog ib qho ntawm ob peb oxides ntawm lub ntiaj teb tsis tshua muaj cov ntsiab lus nrog lub siab melting point. Raws li cov thev naus laus zis tam sim no, Sc2O3 / TREO tuaj yeem yog 99.999% siab tshaj. Nws yog soluble hauv kub acid, tab sis insoluble hauv dej.