مرحبا بكم
اسم العنصر: سكانديوم
العدد الذري: 21
الوزن الذري : 44.9559
درجة الانصهار: 1539م
درجة التجمد: 2832م
التوزيع الإلكتروني : Ar]4s23d1
نبذه عن العنصر:
The element was discovered by Nilson in 1878 in the minerals euxenite and gadolinite, which had not yet been found anywhere except in Scandinavia. By processing 10 kg of euxenite and other residues of rare-earth minerals, Nilson was able to prepare about 2g of highly pure scandium oxide
صفاته:
Scandium is a silver-white metal which develops a slightly yellowish or pinkish cast upon exposure to air.
استخداماته:
About 20 kg of scandium (as Sc2O3) are now being used yearly in the U.S. to produce high-intensity lights, and the radioactive isotope 46Sc is used as a tracing agent in refinery crackers for crude oil, etc.
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العنصر التالي عدده الذري 75 ؟؟
