Scandium, yomwe chizindikiro chake chamankhwala ndi Sc ndipo nambala yake ya atomiki ndi 21, ndi chitsulo chofewa, choyera chasiliva. Nthawi zambiri amasakanizidwa ndi gadolinium, erbium, ndi zina zotero, zotulutsa zochepa komanso mtengo wapamwamba. Valence yayikulu ndi oxidation state + trivalent.
Scandium ilipo mu mchere wambiri wapadziko lapansi, koma mchere wochepa wa scandium ukhoza kuchotsedwa padziko lapansi. Chifukwa cha kupezeka otsika ndi zovuta kukonzekera scandium, m'zigawo woyamba unachitika mu 1937.
Scandium ili ndi malo osungunuka kwambiri, koma kachulukidwe kake ndi pafupi ndi aluminium. Malingana ngati masauzande angapo a scandium akuwonjezeredwa ku aluminiyumu, gawo latsopano la Al3Sc lidzapangidwa, lomwe lidzasintha aloyi ya aluminiyamu ndikupangitsa kusintha koonekeratu pakupanga ndi katundu wa alloy, kuti mudziwe udindo wake. Scandium imagwiritsidwanso ntchito muzitsulo zotsika kwambiri zosungunuka monga scandium titanium alloy ndi scandium magnesium alloy.
Tiyeni tiwone filimu yachidule kuti tidziwe zambiri zake
Zokwera mtengo! Zokwera mtengo! Zokwera mtengoNdikuopa kuti zinthu zosowa ngati izi zitha kugwiritsidwa ntchito pa ma shuttles ndi maroketi.
Kwa foodies, scandium imatengedwa ngati yopanda poizoni. Kuyesa kwa nyama zamagulu a scandium kwatha, ndipo mlingo wakupha wapakatikati wa scandium chloride watsimikiziridwa ngati 4 mg / kg intraperitoneal ndi 755 mg / kg oral administration. Kuchokera pazotsatirazi, mankhwala a scandium ayenera kutengedwa ngati mankhwala owopsa kwambiri.
Komabe, m'madera ambiri, mankhwala a scandium ndi scandium amagwiritsidwa ntchito ngati zokometsera zamatsenga, monga mchere, shuga kapena monosodium glutamate m'manja mwa ophika, omwe amangofunika pang'ono kuti apange mfundo yomaliza.
Nthawi yotumiza: Aug-06-2021