Scandium yog ib qho tshuaj lom neeg. Scandium yog qhov kev paub uas koj tsis paub
Scandium yog cov khoom siv tshuaj nrog lub cim cim Sc thiab atomic naj npawb 21. Nws yog ib qho mos, silvery hloov pauv hlau nrog lub melting point ntawm 1541 degree thiab kub kub ntawm 2831 degree. Nws yog soluble hauv dej thiab tuaj yeem hnov mob nrog dej kub. Nws yog ib qho yooj yim kom tsaus rau saum huab cua. Nws lub ntsiab valence yog ntxiv rau 3. Nws yog feem ntau tov nrog gadolinium thiab erbium, thiab nws cov zis yog heev me me, thiab nws cov ntsiab lus nyob rau hauv lub crust yog hais txog 0.0005 feem pua. Scandium feem ntau yog siv los ua cov iav tshwj xeeb thiab lub teeb kub-resistant alloy.
Scandium yog daj lossis liab me ntsis thaum oxidized los ntawm huab cua, thiab yooj yim weathered thiab maj mam yaj nyob rau hauv feem ntau dilute acids. Txawm li cas los xij, txheej txheej impermeable passivation tau yooj yim tsim rau ntawm qhov chaw hauv cov kua qaub uas muaj zog, yog li nws tsis hnov mob nrog 1: 1 sib xyaw ntawm nitric acid (HNO3) thiab hydrofluoric acid (HF).
Scandium ntiaj teb Sc2O3, nrog lub ntiajteb txawj nqus ntawm 3.
Cov ntsev tsis muaj xim thiab tsim colloidal nag lossis daus nrog potassium hydroxide thiab sodium carbonate. Nws yog qhov nyuaj rau ntau cov ntsev kom crystallize zoo. Scandium ntsev tsis muaj xim, tsim cov nag lossis daus nrog cov poov tshuaj hydroxide thiab sodium carbonate, thiab sulfate nyuaj heev rau crystallize.
Carbonate yog insoluble nyob rau hauv dej thiab tej zaum yuav tsim alkaline carbonate nag lossis daus. Scandium carbonate yog insoluble hauv dej thiab tuaj yeem tshem tawm cov pa roj carbon dioxide yooj yim. Sulfuric acid ob ntsev yuav tsis tsim alum. Lub complex ntsev ntawm scandium sulfate tsis tsim alum.
Lub volatility ntawm anhydrous chloride ScCl3 yog qis dua li ntawm txhuas chloride, thiab nws yooj yim rau hydrolyze dua magnesium chloride. Qhov kub sublimation ntawm ScCl3 yog 850 degree, thaum AlCl3 yog 100 degree, uas yog hydrolyzed nyob rau hauv aqueous kua.
